entomology

New blogs of note

/ Ted C. MacRae / 20 Comments

Every now and then, I like to feature some of the more interesting blogs that I’ve encountered recently. This update features six blogs – five dealing with entomology and one dealing with herpetology.

Aphonopelma: Tarantulas of the United States

© Kory Roberts

Aphonopelma: Tarantulas of the United States is a relatively new blog by Michael D. Warriner. With only a single U.S. genus (Aphonoplema), this may seem a rather narrow scope for a blog.  However, as Michael points out, research on ecology, conservation, and taxonomy of U.S. tarantulas has been surprisingly limited.  Their taxonomy, in particular, has been quite problematic, making accurate species identifications almost impossible.  Michael has begun summarizing known distributional information for states from which tarantulas are known (Missouri south to Louisiana and west to California) and providing detailed discussions for selected species with an eye towards enabling better conservation efforts for this neglected group of spiders.

Nature Closeups

© Troy Bartlett

Nature Closeups is the new blog by insect photographer extarordinaire and BugGuide (“a community for fellow naturalists devoted specifically to arthropods”) founder Troy Bartlett.  Featuring stunning photographs of mostly insects from his home near Atlanta, Georgia and his frequent trips to Brazil, Troy often adds interesting details about the natural history behind the photo.  As Troy explains, photography is “more a means than an end. Looking over the photographs afterwards and researching the things I’ve found is even more rewarding.”  Those with a lot of confidence in their insect identification skills may wish to try their hand at Troy’s occasional identification challenges (prepare to be humbled!).

Up Close With Nature

© Kurt (a.k.a. orionmystery)

Up Close with Nature by Kurt (a.k.a. orionmystery) is one of my favorite insect macrophotography blogs.  Kurt lives in Kuala Lumpur, Malaysia, giving him access to an insect fauna that is extraordinary in both its diversity and beauty.  Kurt uses the stunning insects of this rich fauna to share with readers his excellent tips and techniques for insect macrophotography.  His latest post features one of the best explanations I have seen on the use of Flash Exposure Compensation in Macro Photography, and previous posts have given me some great ideas on diffusers and the use of backgrounds to optimize flash lighting.  If you’re interested in the science of insect macrophotography, you will enjoy this blog.

Living With Insects

© Jonathan Neal

Living With Insects is the new blog by Jonathan Neal, Associate Professor of Entomology at Purdue University and author of the textbook, Living With Insects (2010).  Jonathan is interested in exploring the intersections of people and insects, and though he just began blogging a month ago he has already covered such topics as the evolution of insect flight, the consequences of virus infection in domestic cricket colonies, insects and burial practices, raising monarchs, insect cuticle, and the importance of insect museums.  It’s a daily dose of erudition!

6legs2many

© Alison Bockoven

6legs2many is written by Alison Bockoven, an entomology graduate student at Texas A&M University.  While her research focuses on genetic variation in the foraging behavior of the red imported fire ant, Alison is also having fun discovering the broader field of entomology.  Her enthusiasm is palpable as she features some of the insects that she has encountered and the techniques used for their collection and curation.  Her latest post covers the Embioptera, or webspinners – a group that I, after nearly three decades as a practicing entomologist, still have not encountered.  By the way, the title of the blog is derived from this humorous quip by Joseph W. Krutch:

Two-legged creatures we are supposed to love as we love ourselves.  The four-legged, also, can come to seem pretty important.  But six legs are too many from the human standpoint.

Field Notes

© Bryan D. Hughes

Although I am a devout entomologist, I do enjoy a good herp blog, and Field Notes by Bryan D. Hughes is one of the best herp blogs that I’ve seen.  Focusing on Arizona’s venomous snakes, Bryan provides stunning photographs of these striking animals (heh heh… get it?) and other assorted reptiles and amphibians from that unique fauna.  As Bryan explains, “I like spending my Saturday nights in hot cars on dirt roads in the middle of nowhere, being attacked from all sides by mosquitoes while searching for deadly snakes.”  His dedication to these oft-misunderstood animals is clear by his role as a volunteer for snake relocation calls and his hope that his website will help local homeowners to become interested in native wildlife rather than killing it.

Copyright © Ted C. MacRae 2010

Rearing the Prairie Tiger Beetle (Cicindela obsoleta vulturina)

/ Ted C. MacRae / 12 Comments

A Prairie Tiger Beetle larva peers up from its burrow in rocky soil of a dolomite glade in the White River Hills of southwestern Missouri. The head of this 3rd-instar larvae is about the size of a pencil eraser.

I had so looked forward to the long Memorial Day weekend collecting trip – time of season and the weather were perfect, and it had been several years since I’d made a late spring swing through the woodlands, glades, and prairies of western Missouri. But after two fruitless days of searching for nearly non-existent beetles at Ha Ha Tonka State Park, Lichen Glade Natural Area, and Penn-Sylvania Prairie, I was faced with a choice: return home disappointed or try something completely different in an attempt to salvage the weekend.  I chose the latter.

A 3rd-instar Prairie Tiger Beetle larva extracted from its burrow. Total length is ~30mm.

What could be more different than the White River Hills of southwestern Missouri?  The deeply dissected dolomite bedrocks supporting xeric, calcareous glades, dry woodlands and riparian watercourses couldn’t be more different than the gentle, acidic sandstone terrain of those more northerly locations.  Its hilltop glades (“balds”) are the most extensive such system in Missouri, and I’ve already featured several charismatic insects from my travels last summer to this part of Missouri, including Megaphasma denticrus (North America’s longest insect), Microstylus morosum (North America’s largest robber fly), and Plinthocoelium suaveolens (North America’s most beautiful longhorned beetle).  One insect that I also wanted to feature from that area but that eluded me during last fall’s cold and wet collecting trip is the Prairie Tiger Beetle – Cicindela obsoleta vulturina.  This impressive species is highly localized in Missouri, occurring no further north and east than the White River Hills.  Moreover, the populations in this part of the state and across the border in Arkansas are highly disjunct from the species’ main population in the southern Great Plains.  Like a number of other plants and animals, the Missouri/Arkansas disjunct may represent a relict from the hypsithermal maximum of several thousand years ago, finding refuge in these rocky hills after cooling temperatures and increasing moisture caused the grasslands of today’s west to retreat from their former eastern extent.

The ''business end'' - four eyes and two enormous mandibles. The metallic purple pronotum is covered with soil.

Despite its restricted occurrence in Missouri, the species is apparently secure and occurs commonly on the many dolomite glades that are found in the area. I have records from a number of localities in the White River Hills, but the best populations I’ve seen occur at Blackjack Knob in Taney County.  Of course, I would have absolutely no chance of seeing the adults during this Memorial Day weekend – adults don’t come out until late summer rains trigger emergence in late August and early September.  It was not, however, the adults that I was after, for I had seen larvae of what I believed must be this species in their burrows during one of my visits to this location last summer.  Although I have collected several other species of tiger beetles in the area, I reasoned these larvae must represent C. obsoleta vulturina due to their rather large size (this species is one of the largest in the genus in North America) and because they lacked the white bordering of the pronotum typical of species in the genus Tetracha – the only other genus occurring in Missouri with species as large as this.  I had tried to extract some of the larvae for an attempt at rearing, but neither of the two techniques I tried (“fishing” and “jabbing”) had worked.  Fishing involves inserting a thin grass stem into the burrow and yanking out the larva when it bites the stem; however, I found the burrows of this species to angle and turn due to the rocky soil rather than go straight down for a clear shot.  Jabbing involves placing the tip of a knife at a 45° angle about 1″ from the edge of an active burrow, waiting for the larva to return to the top of the burrow, and jabbing the knife into the soil to block the larva’s retreat – a quick flip of the knife exposes the larvae, but in this case jabbing did not work because I always ended up hitting a rock and missing the larva before it ducked back down in the burrow.

Hooks on the abdominal hump of a 3rd-instar Prairie Tiger Beetle larva prevent it from being pulled out of its burrow by struggling prey.

I returned to the site where I had seen larval burrows last year and once again found them.  I tried fishing a few, though I knew this would be futile, then jabbing – again with no success, and then had an idea.  I went to the truck and retrieved a small trowel that I use to dig soil for filling rearing containers, then found an active burrow (larva sitting at the top, though dropping upon my approach) and got in position using the trowel as I would the knife.  I held the trowel firmly with both hands and placed my body behind it so I could use all my weight to force the trowel into the soil and past the rocks when the larva returned to the top of the burrow – worked like a charm!  After taking photographs of the first larva that I successfully extracted, I set to the business of collecting nearly a dozen more over the next couple of hours.  I then filled several containers with soil (using rocks in the larger one to create “compartments” to keep the larvae separated), poked “starter burrows” in the soil, and one at a time placed the extracted larvae in the burrows and sealed them in by pushing/sliding my finger over the hole.  I’ve found this is necessary to prevent the larvae from crawling right back out and digging a new burrow somewhere else – not a problem if there is only one larva in the container (although I prefer they use the starter burrows that I place at the edge of the container so that I can see them in their burrows to help keep track of what they are doing); however, in containers with more than one larva they will often encounter each other and fight, resulting in some mortality.  Larvae sealed in starter burrows eventually dig it open again but generally continue excavating it for their new burrow.  One larva was not placed in a rearing container – it was kept in a vial for the trip home, where it was dispatched and preserved in alcohol as a larval voucher specimen.

This male adult Prairie Tiger Beetle (emerged 10 weeks after collecting the larva) shows the dark olive-green coloration and semi-complete markings typical of the MO/AR disjunct population.

After returning to St. Louis, I placed the rearing containers in a growth chamber and monitored larval activity 2-3 times per week.  Whenever a burrow was opened, I would place a fall armyworm, corn earworm, or tobacco hornworm larva in the burrow and seal it shut.  Some burrows would be re-opened almost immediately and, thus, fed again, while others stayed sealed for longer periods of time.  Tap water was added to the container whenever the soil surface became quite dry – generally once per week, and by late July nearly all of the burrows were sealed and inactive. If these larvae did, indeed, represent C. obsoleta vulturina, then this would be the time they would be pupating.  On August 15 I had my answer, when I checked the containers to find the above male had emerged, and the next day two more adults emerged as well (including the female shown below).

This female adult Prairie Tiger Beetle emerged the same day as the male and shows slightly brighter green coloration.

I put the emerged adults together in the largest rearing container, and within minutes the male and one of the females were coupled. I’ve kept them fed with small caterpillars and rootworm larvae, and numerous oviposition holes were eventually observed on the surface of the soil in the container. In a few weeks, I’ll place this container in a cold incubator for the winter and then watch next spring to see if larvae hatch and begin forming burrows. If so, it will be a chance to see if I can rear the species completely from egg to adult and preserve examples of the younger larval instars.

Photo Details: Canon 50D (ISO 100, 1/250 sec) w/ Canon MT-24EX flash w/ Sto-Fen + GFPuffer diffusers. Typical post-processing (levels, minor cropping, unsharp mask).
Photos 1-2, 5-6: 100mm macro lens (f/14-f/16).
Photos 3-4: 65mm MP-E 1-5X macro lens (f/14).

Edit 9/10/10, 6:30 pm: I checked the terrarium today and discovered 24 brand new 1st-instar larval burrows dotting the soil surface.  They are quite large already, almost as big as 3rd-instar burrows of the diminutive Cylindera celeripes.  I guess I’m surprised to see larvae hatching already, as I expected they would overwinter as eggs and hatch in the spring.  Now that I think about it, however, hatching in the fall makes sense, as this gives them an opportunity to feed some before winter sets in and also allows them to burrow for more protection from freezing temperatures.  I’ve dumped a bunch of 2nd-3rd instar Lygus nymphs into the terrarium for their first meal.

Copyright © Ted C. MacRae 2010

North America’s largest centipede

/ Ted C. MacRae / 69 Comments

As I prowled the remote mixed-grass prairie of northwestern Oklahoma in the middle of the night, an enormous, serpentine figure emerged frenetically from a clump of grass and clambered up the banks of the draw I was exploring.  Although I was still hoping for my first glimpse of the Great Plains giant tiger beetle, I was keeping a watchful eye out for anything that moved within the illuminated tunnel of my headlamp due to the potential for encountering prairie rattlesnakes (perhaps the most aggressive of North America’s species).  This was clearly no snake, but at up to 8″, Scolopendra heros (giant desert centipede) easily matches some smaller snakes in length.  Also called the giant Sonoran centipede and the giant North American centipede, it is North America’s largest representative of this class of arthropods (although consider its South American relative, S. gigantea – the Peruvian or Amazonian giant centipede, whose lengths of up to 12″ make it the largest centipede in the world).

Although I had never before seen this species alive, I recognized it instantly for what it was.  Many years ago I was scouting the extreme southwest corner of Missouri for stands of soapberry (Sapindus saponaria), a small tree that just sneaks inside Missouri at the northeasternmost limit of its distribution, in hopes of finding dead branches that might be infested with jewel beetles normally found in Texas.  I had heard that these centipedes also reach their northeastern extent in southwestern Missouri, and just a few miles from the Arkansas and Oklahoma borders I found a road-killed specimen.  I stood there dejected looking at it – too flattened to even try to salvage for the record.

Centipedes, of course, comprise the class Chilopoda, which is divided into four orders.  The giant centipedes (21 species native to North America) are placed in the order Scolopendromorpha, distinguished by having 21 or 23 pairs of legs and (usually) four small, individual ocelli on each side of the head (best seen in bottom photo).  The three other orders of centipedes either lack eyes (Geophilomorpha) or possess compound eyes (Scutigeromorpha and Lithobiomorpha).  These latter two orders also have only 15 pairs of legs (shouldn’t they thus be called “quindecipedes”?).  Among the scolopendromorphs, S. heros is easily distinguished by its very large size and distinctive coloration.  This coloration varies greatly across its range, resulting in the designation of three (likely taxonomically meaningless) subspecies.  This individual would be considered S. h. castaneiceps (red-headed centipede) due to its black trunk with the head and first few trunk segments red and the legs yellow.  As we have noted before, such striking coloration of black and yellow or red nearly always indicates an aposematic or warning function for a species possessing effective antipredatory capabilities – in this case a toxic and very painful bite.

The individual in these photographs is not the first one I saw that night, but the second.  I had no container on hand to hold the first one and not even any forceps with which to handle it – I had to watch in frustration as it clambered up the side of the draw and disappear into the darkness of the night.  Only after I returned to the truck to retrieve a small, plastic terrarium (to fill with dirt for the giant tiger beetles that I now possessed) did I luck into seeing a second individual, which I coaxed carefully into the container.  It almost escaped me yet again – I left the container on the kitchen table when I returned home, only to find the container knocked onto the floor the next morning and the lid askew.  I figured the centipede was long gone and hoped that whichever of our three cats that knocked the container off the table didn’t experience its painful bite.  That evening, I noticed all three cats sitting in a semi-circle, staring at a paper shredder kept up against the wall in the kitchen.  I knew immediately what had so captured their interest and peeked behind the shredder to see the centipede pressed up against the wall. The centipede had lost one of its terminal legs but seemed otherwise none the worse for wear – its terrarium now sits safely in my cat-free office, and every few days it enjoys a nice, fat Manduca larva for lunch.

There are a number of online “fact sheets” on this species, mostly regarding care in captivity for this uncommon but desirable species.  I highly recommend this one by Jeffrey K. Barnes of the University of Arkansas for its comprehensiveness and science-focus.

Photo Details: Canon 50D (ISO 100, 1/250 sec) w/ Canon MT-24EX flash in white box.
Photos 1-2: Canon 100mm macro lens (f22), indirect flash.
Photo 3: Canon MP-E 65mm 1-5X macro lens (f/13), direct flash w/ Sto-Fen + GFPuffer diffusers.
Post-processing: levels, minor cropping, unsharp mask.

Copyright © Ted C. MacRae 2010

Flaming the debate

/ Ted C. MacRae / 14 Comments

Eastern redcedar encroaching loess hilltop prairie, a critically imperiled natural community in Missouri.

ResearchBlogging.orgAs my interest in prairie insects has increased over the past few years, so has my interest in their conservation. Many insects are restricted to prairies through dependence upon prairie plants or their unique physical and trophic characteristics. Thus, preservation of not only prairie plants but their insect associates as well is a major goal of conservationists.  The task is daunting – for example only ~1% of tallgrass prairie remains in the central U.S., the rest long ago converted to agriculture or otherwise irreparably altered.  Prairies are dynamic natural communities that rely upon disturbance – this need to “disturb to preserve” creates an oxymoronic conundrum for restoration ecologists that is made even more difficult by the fragmented nature of today’s prairie landscape.  The situation here in Missouri is even more difficult, as nearly all of our grassland preserves (tallgrass prairie, sand prairie, loess hilltop prairie and glades) are exceedingly small and highly disjunct relicts not connected as parts of larger systems.

In recent years, prescribed burning has become the management tactic of choice for restoring and maintaining grassland preserves.  There are good reasons for this – not only are increased floral diversity and reversal of woody encroachment well-documented responses to fire, but burning is also highly cost-effective (a critical consideration in today’s climate of shrinking public budgets).  As the use of prescribed burning on grassland preserves has become widely adopted, however, concerns about the impacts of fire on invertebrate populations have been raised.  The subject is now an area of intense research, but studies are hampered by the limited availability of large, long-unburned tracts of native prairie, and no scientific consensus has yet emerged.  Regrettably, the debate has polarized into “pro-” and “anti-fire” camps that seem unable to communicate with each other constructively.  This is unfortunate, since both ends of the spectrum offer ideas that could be used to achieve the goal of preserving prairie remnants while mitigating concerns about invertebrate impacts.  I have previously expressed my own views on the subject, a position that I suspect some might mistakenly characterize as “anti-fire.”  While I do support the use of prescribed burning, I do not support its use with no consideration of other prairie management strategies such as haying and light grazing (not to be confused with the heavy, abusive, unmanaged kind of grazing that has degraded so much of our landscape).  All of these tools (as well as parcels that receive no management at all) have potential value in prairie management and should be considered.

Those interested in potential fire impacts on prairie invertebrates will be interested in this latest salvo by Scott Swengel and colleagues, who used metadata analysis to correlate declines of prairie butterflies in the Midwest with the widespread adoption of prescribed burning as a management tactic.  The authors present convincing evidence that tallgrass prairie butterfly populations are not co-evolved with fire regimes currently used for prairie management, although their conclusions will no doubt be challenged.  Nevertheless, until a firmer scientific consensus can be achieved, prudence should dictate some measure of caution in the use of fire as an exclusive prairie management tactic.

Dear Colleagues:

We are pleased to announce a new article by Scott Swengel, Dennis Schlicht, Frank Olsen, and Ann Swengel, based on long-term data that has just been published online,  Declines of prairie butterflies in the midwestern USA.  This paper is available free from Springer Open Choice at http://www.springerlink.com/content/l732444592662434/fulltext.pdf or by going to the Journal of  Insect Conservation Online First section and scanning through the articles in ascending number order until getting to articles posted 13 August 2010.

The trends of tallgrass prairie skippers shown here, although disastrous, underestimate the decline in Iowa and Minnesota for several reasons:

  1. In statistical testing we only include sites with adequate data for testing, which eliminates many sites from inclusion that had 100% declines of a specialist we know about.
  2. Nearly all sites with long time series were the top sites to begin with, which are likely to take a longer time to show large declines than medium or low-quality sites.
  3. Recent government sponsored surveys not included here show another round of huge declines for Poweshiek Skipperling in Iowa and Minnesota.
  4. Some species went undetectable by the late 1980s and early 1990s, so didn’t register as a presence when the study began.  Hence, they cannot show a decline since then.

Some good news is that conservation based on existing knowledge of specialists’ management responses gets far better results (as shown by Regal Fritillaries and Karner Blues in Wisconsin than typical management.  So declines like this are not inevitable.

The Ecological Interpretations and Conservation Conclusion section of Discussion contain some of our new insights explaining the observed about land-use effects on prairies and butterflies.

Scott Swengel

My thanks to Scott Swengel for giving me permission to reprint his introduction.

REFERENCE:

Swengel, S. R., D. Schlicht, F. Olsen & A. B. Swengel. 2010. Declines of prairie butterflies in the midwestern USA Journal of Insect Conservation: DOI 10.1007/s10841-010-9323-1.

Copyright © Ted C. MacRae 2010

Trichodes bibalteatus in Oklahoma

/ Ted C. MacRae / 6 Comments

Among checkered beetles (family Cleridae), the genus Trichodes contains among the largest and most strikingly-colored species.  The 11 North American species of this predominantly Holarctic genus are primarily western in distribution, although two species (T. nuttalli and T. apivorus) do occur in the eastern U.S.  The individual in these photos was one of several I encountered feeding on the flowers of a yellow composite in the Gloss Mountains of northwestern Oklahoma during early July.  I take them to represent the species T. bibalteatus based on their close resemblance to the holotype of that species from the LeConte Collection in the Museum of Comparative Zoology at Harvard University.  While these photographs are admittedly far from perfect, they were about the best I could manage at the time considering the gusty post-storm winds that I encountered atop the mesa where these beetles were found (along with my continuing difficulty in achieving proper exposure with subjects on bright yellow flowers).

The striking colors of adult Trichodes and their frequent association with flowers for feeding and mating belies a more treacherous aspect of their life history.  While adults may serve as important pollinators of native plant species (Mawdsley 2004), they also lay their eggs on flowers.  The larvae that hatch from these eggs don’t eat the flower itself, but rather attach themselves to bees and wasps that visit the flower as they gather pollen for provisioning their own nests (Linsley & MacSwain 1943).  The larvae hitch a ride back to the hymenopteran’s nest, where they then prey on the developing brood and usurp pollen provisions for themselves.

Photo Details: Canon 50D w/ MP-E 65mm 1-5X macro lens (ISO 100, 1/250 sec, f/16), Canon MT-24EX flash (1/8 ratio) w/ Sto-Fen + GFPuffer diffusers. Typical post-processing (levels, minor cropping, unsharp mask).

REFERENCE:

Linsley, E. G. & J. W. MacSwain. 1943. Observations on the life history of Trichodes ornatus (Coleoptera, Cleridae), a larval predator in the nests of bees and wasps. Annals of the Entomological Society of America 36:589–601.

Mawdsley, J. R. 2004. Pollen transport by North American Trichodes Herbst (Coleoptera: Cleridae). Proceedings of the Entomological Society of Washington 106(1):199-201.

Copyright © Ted C. MacRae 2010

Clown beetle surprise

/ Ted C. MacRae / 12 Comments

As I slowly scanned my flashlight through the darkness across the mixed-grass prairie in the Glass Mountains of northwestern Oklahoma last July, there was one thing that I hoped not to see (prairie rattlesnake, unless from afar) and one thing that I hoped more than anything to see (Great Plains giant tiger beetle, Amblycheila cylindriformis). Fortunately, I encountered none of the former and found several of the latter.  It took awhile before I saw the first one, but in the meantime I saw all too abundantly the clown beetle, Eleodes suturalis.  A member of the family Tenebrionidae, this species is one of the most conspicuous components of the Great Plains beetle fauna.  Adults are commonly encountered walking about the grasslands or crossing roads, especially after summer rains.  I recall my first encounter with this species when I made my first insect collecting trip to the Great Plains in 1986, marveling as I literally watched hundreds of individuals crossing a remote highway in southwestern Kansas.  Now, they were just an annoyance – close enough in size and appearance to the object of my search that I had to pause and look at each one I encountered to verify its identity.¹

¹ In fact, a mimetic association has been suggested for Amblycheila cylindriformis and Eleodes suturalis due to their similarity in size, shape and coloration (black with a reddish-brown sutural stripe) (Wrigley 2008).  This may be true, as Eleodes suturalis is an abundant species capable of defending itself with noxious sprays that contain benzoquinone and other hydrocarbons, while Amblycheila cylindriformis is a much rarer species (as mimics tend to be) that lacks defensive compounds.

After finding a few of the Amblycheila, I encountered this particular individual clinging to a root sticking out of the side of a wash.  My closer look caused it to immediately assume its characteristic defensive headstand pose (from which the name ‘clown beetle’ comes), so I decided to take a few photographs (not an easy task at night).  The photos have been sitting on my hard drive since, but in examining them more closely, I realized that this particular beetle is not E. suturalis.  Rather, it is one of several similar appearing species that co-occur with E. suturalis in the Great Plains and sometimes resemble it due to their large size, sulcate elytra, and occasional presence of a similar reddish-brown sutural stripe.  From these species, E. suturalis is at once distinguished by its broadly explanate (flanged) pronotum and laterally carinate, distinctly flattened elytra.  This individual clearly exhibits more rounded elytra and as best as I can tell keys to E. hispilabris – distinguished from E. acuta and E. obscurus by possessing a normal first tarsal segment (not thickened apically) on the foreleg (Bennett 2008).  Presumably this and the other related species of Eleodes also possess chemical defenses similar to E. suturalis – an example of Müllerian mimicry where multiple species exhibit similar warning coloration or behavior (in this case headstanding) along with genuine anti-predation attributes.

Photo Details: Canon 50D (ISO 100, 1/250 sec, f/14), Canon 100mm macro lens, Canon MT-24EX flash (1/4 ratio) w/ Sto-Fen diffusers. Post-processing: levels, unsharp mask, slight cropping.

REFERENCES:

Bernett, A. 2008. The genus Eleodes Eschscholtz (Coleoptera: Tenebrionidae) of eastern Colorado. Journal of the Kansas Entomological Society 81(4):377–391.

Wrigley, R. A.  2008. Insect collecting in Mid-western USA, July 2007.  The Entomological Society of Manitoba Newsletter 35(2):5–9.

Copyright © Ted C. MacRae 2010

“A good photographer is invisible…”

/ Ted C. MacRae / 4 Comments

Yesterday I shot down to the southeastern lowlands of Missouri to spend some quality time in the field with friend and fellow cicindelophile Kent Fothergill. We were primarily looking for migrants of the Ascendent Tiger Beetle (Cicindela trifasciata ascendens), a Gulf Coast species that doesn’t normally occur in Missouri but is well known for its vagility and late-season northward migrations and which has been seen in the state once before (Brown and MacRae 2005).  No such individuals were found, but no matter – the day was really about just getting out and enjoying the camaraderie.  Nevertheless, there were some successes.  We located burrows of 1st- and  2nd-instar larvae of the Ant-like Tiger Beetle (Cylindera cursitans) at a site along the Mississippi River where Rich Thoma and I found adults last year.  Previous attempts to rear this species from larva to adult have not succeeded (Brust et al. 2005), but I collected a number of larvae and transferred them to a rearing container anyway in hopes that the techniques I’ve developed for rearing the closely-related Swift Tiger Beetle (Cylindera celeripes) might work also with this species.  We also found the beast that I am photographing above – I’ll leave it to your imagination for now to figure out what it is.

In between stops there was plenty of time for discussion on subjects entomological and non.  One thing Kent knows a thing or two about is insect photography, and during a discussion about such he made an interesting comment. Beyond focus, exposure, and composition, he noted that good insect photographers have the ability to become invisible – i.e., they combine patience and persistence with knowledge of the subject’s behavior to make it forget about the big glass eye staring at them from 6 inches away and return to going about their business.  It brought some clarity to my mind about the things I’ve tried in my own attempts to photograph insects that really did not want to be photographed (and there have been many).  The point was emphasized when I came into the office this morning and found the above photograph in my email inbox – Kent had taken it yesterday while I was photographing the bug-to-be-named-later, and I was completely unaware that I was being photographed!  Yes, a good photographer is invisible…

REFERENCES:

Brown, C. R. and T. C. MacRae. 2005. Occurrence of Cicindela (Cicindelidia) trifasciata ascendens (Coleoptera: Cicindelidae) in Missouri. Cicindela 37(1–2):17–19.

Brust, M. L., W. W. Hoback, and C. B. Knisley. 2005. Biology, habitat preference, and larval description of Cicindela cursitans LeConte (Coleoptera: Carabidae: Cicindelinae). The Coleopterists Bulletin 59(3):379–390.

Copyright © Ted C. MacRae 2010

Add to FacebookAdd to DiggAdd to Del.icio.usAdd to StumbleuponAdd to RedditAdd to BlinklistAdd to TwitterAdd to TechnoratiAdd to Yahoo BuzzAdd to Newsvine

Email to a friend

Cicindela – A quarterly journal devoted to Cicindelidae

/ Ted C. MacRae / 13 Comments

Being a cicindelophile (i.e., a tiger beetle enthusiast), I have on occasion highlighted articles published in the journal Cicindela (“A quarterly journal devoted to Cicindelidae”) (see previous post – also here, here and here).  This delightful little journal is the now 42-year old brainchild of Ronald L. Huber, among North America’s foremost experts of the group (and still serving as Managing Editor for the journal).  With Robert C. Graves and Richard Freitag also serving as Editors, the journal publishes four issues per year – each containing a variety of articles dealing with the taxonomy, biology, faunistics, and conservation of this captivating group.  More recent years have also seen the inclusion of color photographs.  For serious students of the group, the journal is an indispensable resource – its issues containing a significant portion of the recent tiger beetle taxonomic literature (indeed, I am fortunate to possess in my own library a complete and nicely bound set of this journal).  However, even those with only casual interest in the group can appreciate the journal’s informal, enthusiast-centric tone.  A remarkably longstanding labor-of-love, Ron himself lays out and delivers each issue to the printer, then mails copies to the journal’s few hundred subscribers.

One thing that the journal has lacked is a web presence.  This has becomes all too clear with each article that I’ve featured, each prompting requests for subscription information by readers whose interest in the journal was piqued but were then unable to find such information on the web.  All of that is about to change – with Ron’s permission, the journal’s editorial policy and subscription information are being reproduced here to make them more widely available to those who might wish to contribute or subscribe.  The cost of the journal is nominal (only $10 in the U.S.), so even the most casually interested person should be able to justify a subscription.

Editorial Policy

Manuscripts dealing with any aspect of the study of Cicindelidae will be considered from any author.  All manuscripts should be submitted to the Managing Editor via email or on diskette [see inside back cover for conventions and format].  Papers dealing with areas other than the Nearctic are especially solicited but should be in English.  Translations are also very welcome.  All manuscripts will be acknowledged upon receipt.  Proofs-for-correction will be emailed to authors for quality control.  Illustrations, charts, graphs, etc., are encouraged.  Authors that have institutional support or other funds available for publication purposes are importuned to arrange for at least partial payment of publication costs.  Current page charges are shown inside the back cover.

Subscriptions

The subscription price for each annual volume of four numbers is currently $10.00 (domestic) and $13.00 outside the U.S.  All subscriptions begin with the first issue of the year.  Back issues of prior volumes, if still available, are priced according to age.  Inquire for prices.  All requests for subscriptions and back issue availability should be addressed to the Managing Editor: Ronald L. Huber, 2521 Jones Place West, Bloomington, Minnesota 55431-2837, U.S.A.

My appreciation to Ron for allowing me to post this information, and also to Ken Allen, for permitting me to reproduce the cover of the latest issue of Cicindela, graced with a gorgeous variant of Cicindela longilabris that he photographed in Glacer National Park.

Copyright © Ted C. MacRae 2010

Add to FacebookAdd to DiggAdd to Del.icio.usAdd to StumbleuponAdd to RedditAdd to BlinklistAdd to TwitterAdd to TechnoratiAdd to Yahoo BuzzAdd to Newsvine

Email to a friend