Another Micro Mystery

One way that I find insects in winter is by scraping off paper wasp nests that have been abandoned by the past season’s generation of wasps, and placing the nests in a transparent container. What usually happens is that one or more kinds of insects will eventually emerge from these nests. Allow me to share one example.

Dibrachys sp.

I started collecting recent, abandoned paper wasp nests (Polistes metricus is the common species around our home here in Leavenworth, Kansas, USA) when I saw a social media post by Sloan Tomlinson (@thatwaspguy on Instagram). He had reared a type of small parasitoid wasp as a result: the eulophid wasp Elasmus polistis. That species is a parasitoid of the brood (larvae, pupae) of paper wasps. Cool. I could add another species to my home biodiversity list.

So many tiny wasps!

I was excited to find, in January of 2022, that this method had worked, as I saw tiny wasps running around inside the container with the old paper wasp nest. Photographing the little creatures, and then cropping those images, it became apparent that what I had was not what I expected. I was left with a mystery that took me awhile to solve, even though I’m fairly good at researching.

I eventually found a journal article chronicling a study of various parasitoids of paper wasps collected from nests in Missouri, the state immediately adjacent to Kansas. In fact, Leavenworth is right across the Missouri River from Missouri. One of the creatures listed was a wasp in the family Pteromalidae. They had only eighty-seven specimens, though. I was looking at hundreds by the time they finished emerging.

Male wasps attempting to mate with a female.

The species name given was Dibrachys cavus. More recently, it has been revealed to be a “species complex,” and has a new assigned name: Dibrachys microgastri. It represents one of *three* species, any one of which could potentially be my creature. Collectively, they are parasitoids of pretty much any insect with complete metamorphosis. That makes it difficult to determine exactly which one I have. Even placing a specimen under a microscope might not be enough magnification for these two-millimeter wasps.

Dibrachys is unusual for a single genus of wasps in having such a wide range of potential hosts. At least some species, or perhaps most, are hyperparasitoids of tachinid flies and braconid or ichneumon wasps that are themselves parasitoids of moth pupae. This makes me wonder if these minions are part of this puzzle that I documented in 2022.

I find unsolved mysteries intriguing, and delight in them even if I never reach any verifiable conclusion. There will always be *something* that defies explanation in the natural world.

This little cobweb weaver spider may have been making a killing, literally.

Sources:Gibson, Gary A.P., John T. Huber, and James B. Woolley (eds). 1997. Annotated Keys to the Genera of Nearctic Chalcidoidea (Hymenoptera). Ottawa, Ontario: NRC Research Press. 794 pp.
Peters, R.S. & Baur, H. 2011. A revision of the Dibrachys cavus species complex (Hymenoptera: Chalcidoidea: Pteromalidae). Zootaxa, 2937 (1), 1-30.
Whiteman, Noah K. and Brett H.P. Landwer. 2000. Parasitoids Reared From Polistes (Hymenoptera: Vespidae: Polistinae) Nests in Missouri, With a State Record of Elasmus polistis Burk (Hymenoptera: Elasmidae). J Kansas Ent Soc 73(3): 186-188.

New Year’s Insects and Spiders

Happy New Year to my friends and followers! I do hope that you are finding reasons to celebrate, and are getting out into nature. Our local weather here in northeast Kansas, USA, has been unseasonably mild, to the point of nearly breaking high temperature records. Yesterday, January 7, it was sixty-eight degrees on the Fahrenheit scale. Our average historical high is in the high thirties or low forties. Consequently, I have found a few insects and arachnids active in our yard.

Spined Soldier Bug, Podisus maculiventris

A few months ago, one person admonished me for using the word “bug” too liberally, to include other insects, and even other arthropods. Technically, it is a proper complaint, but scientists are not my intended audience here, and the overall goal is to improve public appreciation of every related organism that suffers persecution and disdain. In honor of this person’s observation, I will start by giving examples of actual bugs, true bugs in the order Hemiptera, that I have seen here in January, 2026.

It is surprising how many true bugs overwinter in the adult stage, and will stir themselves “awake” on warm winter days. Among the most obvious are stink bugs. Many people across the United States are familiar with the non-native Brown Marmorated Stink Bug (BMSB), but I have not yet encountered one this month. Instead, I have been surprised by this season’s population of the Spined Soldier Bug, Podisus maculiventris, a type of predatory stink bug. You read that correctly, this stink bug, along with several other species, preys on other insects. Normally, I see precious few of them, but this past autumn they were everywhere, especially along forest edges.

Stink bug, Banasa calva

Another stink bug I saw recently is Banasa calva, or at least I think so. There are eleven species in the genus in North America, and several of them look identical to this one. Species identification relies on characters best observed under a microscope. This is one of the usual species that feeds on sap of trees and shrubs, but is rarely, if ever, a pest.

Leafhopper, Erythridula? sp.

Leafhopper, Stirellus bicolor

Three-Banded Leafhopper, Erythroneura tricincta

Usually, the bugs I find this late (or early) in the cold months are leafhoppers, family Cicadellidae. They are small enough to be overlooked easily, but I managed to spot at least three different species recently. They are often so wary as to be difficult to approach, flying before you can train a camera or phone on them. Looking on both the interior and exterior surface of our backyard fence, and on the exterior of our house, usually proves fruitful. These insects also feed on plant sap. A few species are major crop, orchard, and vineyard pests because they can transmit plant viruses.

Aphid

I am well aware that many species of aphids spend the winter on alternate host plants, different from the plants that they feed on in warmer months, but I was still shocked to find one that had alighted on our fence. A single species of aphid my differ drastically in physical appearance between its winter and spring/fall populations.

Multicolored Asian Lady Beetle

Most beetles stay well-concealed in leaf litter, under bark, and in other nooks and crannies, but lady beetles in particular will surface on warmer days to prowl sun-warmed surfaces.

Non-biting midge

Flies are insects that you wouldn’t expect to be the least bit active, but if you look closely enough, you are still likely to find some. Chief among them are tiny, non-biting midges that defy identification. Even expert midge specialists find them challenging.

Winter crane fly

There are some flies that you can find only during the colder months, and the winter crane flies of the family Trichoceridae are perhaps the largest of them. At least if you measure their lanky leg span of three-fourths of an inch or so. I see them almost daily on the side of our house, our garage, and clinging to the wooden fence. The larvae require moist or wet terrestrial habitats where they feed mostly on decaying vegetable matter, fungi, debris in rodent burrows, and similar niches.

Moth fly, Psychoda sp.

A different moth fly of another genus?

Moth flies are very small and cryptic, and also resemble moths more than flies. Their larvae feed on decaying organic matter.

Frit fly

Another kind of frit fly with different antennae

Another unexpected family of flies I have observed so far this year are frit flies, also known as grass flies and “eye gnats,” in the family Chloropidae. They are almost impossible to spot at only 2-3 millimeters. I imaged several blemishes on our fence before one of them metamorphosed into one of these flies. Ha! They have a variety of lifestyles, though most live as larvae mining the stems of grasses.

F-winged Barklouse

Barklice, in the order Psocodea, are usually most abundant and diverse in late fall, but the only one I have seen so far is the F-winged Barklouse, Graphopsocus cruciatus, one of the introduced species, from Europe. They graze on microflora like algae and fungi on plant leaves, but I usually see them roaming the exterior of our house.

Fall Cankerworm male

Fall Cankerworm female

Moths. Moths! There are several moths that occur as adults in late autumn through early winter. I usually see the Fall Cankerworm, Alsophila pometaria, a type of geometer or “inchworm” moth, in late fall, but it wasn’t until this mnth that I saw both sexes, on the same day. The female moth is wingless, while the male looks like an ordinary moth. The caterpillars are generalist feeders on the leaves of a variety of trees and shrubs. We have several of their known host plants in our yard, so the appearance of the moths is not surprising.

Green-striped Grasshopper nymph

Believe it or not, some grasshoppers overwinter as nymphs (juveniles, immatures), and will poke their heads out of the leaf litter on warm days. The Green-striped Grasshopper, Chortophaga viridifasciata, is one of these.

Smooth springtail, family Isotomidae

Plump springtail, order Poduromorpha

Today, springtails are technically considered “non-insect hexapods” given their primitive physical form, but at one time they were classified as insects. They are generally small enough (under five millimeters) that they escape your attention unless they move. As their name implies, many species jump away when approached. Others do not have the anatomical mechanism to do so, and those are the ones I seem to be encountering now. In some geographic locations you may encounter “snow fleas,” which are actually springtails that can pepper the melting snow at the base of trees and similar situations.

Juvenile long-jawed orbweaver

Juvenile Humpbacked Orbweaver

Spiders can be out and about, too, though they mostly represent juvenile specimens. I managed to spy a young long-jawed orbweaver, Tetragnatha sp., and a “baby” Humpbacked Orbweaver, Eustala anastera, outdoors. I did see a jumping spider on the ceiling of our living room, though, and if I searched thoroughly, I could probably find more arachnid friends.

While I am enjoying the warmth of this winter, so far, I am also concerned about the volatility of our weather from one year to the next. Last year at this time we were buried under snow. The extremes and unpredictability of when the different seasons begin and end does not bode well for the survival of many species. Insects are more adaptable than most, but even they can succumb if they burn their fat reserves ahead of true spring. Take care, friends, let me know what you are finding.

Remembering Moth Week 2025

Yes, I am terribly behind in making public my sightings of insects, arachnids, and other wildlife this year. I finally have my observations for National Moth Week 2025 loaded onto iNaturalist, but I will share some of them here in this post.

Zebra Conchylodes Moth, Eddyville, Kentucky.

Heidi was generous enough to secure us tickets to the Coldplay concert in Nashville, Tennessee, USA, so we spent almost the entirety of the week in that area of the country. We began in the Land Between the Lakes National Recreation Area. When we arrived, the weather was rainy and not at all conducive to looking for insects, but it was also the day before the start of National Moth Week.

This Pink-shaded Fern Moth was the first of its kind I'd ever seen.

We stayed at a small rental house near Eddyville, Kentucky, surrounded by deciduous forest. The first night, we simply left the front porch light on, and looked at the few insects that flew in, using the awning over the porch as convenient cover from the showers.

This Lost Owlet moth was also new to me.

The subsequent two nights were better. We put out our blacklight the second night, under the carport by a large metal garage building. The building had its own, motion-activated light, which helped draw more bugs to our sheet. The landscape was still quite wet, however.

Tulip-tree Beauty, a large geometer moth, was common at our lights....

....but harder to see on a tree trunk!

We debated whether to turn on the blacklight for our third and final night in Eddyville, but I decided against it. We did turn on a light over the back porch, though, and that attracted a good number of insects, including moths.

A Posturing Arta moth, posturing.

As we headed south, we entered Tennessee, and stopped at the lovely Cedar Pond Picnic Area. The sun had broken through permanently by now, so there was more insect activity. Around the pond were a couple of overlooks, and at one of those we startled a butterfly off a pile of scat from some mammal’s recent visit. On closer inspection, we noticed there was also a Nessus Sphinx Moth taking advantage of the fresh dung.

Nessus Sphinx moth enjoying(?) fresh dung.

While we were in Nashville, we stayed at a hotel that did not permit us to do any blacklighting. Plus, there was the concert itself. If you have never been to a stadium concert for your favorite band, I recommend the experience. Highly exhilarating, and worth the expense.

Deep Yellow Euchlaena Moth, Giant City State Park, Illinois.

From Nashville we headed west to southern Illinois, an area rich in both biodiversity, and protected natural areas in which to enjoy it. There are wildlife refuges, state parks, and other places that have grassroots support from local friends groups, resulting in excellent maintenance and outstanding sources of firsthand knowledge.

Rosy Maple Moth.

We decided to visit Crab Orchard National Wildlife Refuge on the way to our destination of Giant City State Park. The visitor center was being remodeled, and it was about to close for the day, but we met a couple who volunteer there. They were friendly, and very helpful. Exploring the exterior of the building, I found a beautiful Rosy Maple Moth, still hanging out by a light it had been drawn to the previous night.

Caterpillars, like this one of a tussock moth, count, too, during National Moth Week. Lower Cache River, Illinois.

Jennifer Randolph, the naturalist and nature center manager at Giant City State Park had invited me to give a presentation on moths for her volunteers and anyone else interested, so we stayed at a cabin in the park for three nights.

The "working" part of our vacation, presenting on moths at Giant City State Park.

The first two nights we set up a blacklight on our cabin porch, and were rewarded with a spectacular variety and quantity of insects. The cabins are basically duplexes (front to back) offering comfortable accommodations for guests, and situated far enough apart that you are not disturbing your neighbors with quiet nighttime activities.

The Bad-wing is actually a real beauty.

On our last night, we set up our lights a fair distance away at a picnic shelter elsewhere in the park. There was a pole light by the shelter that complemented our dim white light and portable blacklight. We did not see many species different from what we had at our cabin, but there were some notable exceptions.

A large and lovely Azalea Sphinx.

On our drive back home, we stopped for a rest, rather randomly, at a Casey’s store in New Florence, Missouri. When I glanced up as we pulled into our parking spot, I could hardly believe my eyes. I blurted out an excited “Oooh, oooh!,” and pointed, wide-eyed, at the enormous female Imperial Moth perched on the wall beneath a light.

Imperial Moth, female.

Moth Week could have ended there and I would have been happy, but we got home to Leavenworth, Kansas in time to set up our blacklight in the front yard for the final night, July 27. A few more species were added, and then it was over.

Unidentified dagger moth, genus Acronicta, Leavenworth, Kansas.

All of my observations can be seen at the hyperlink in the first paragraph of this blog post. Meanwhile, Heidi’s observations can be found here. We almost always see different species, even in the same place. Plus, her photos are usually better.

Linden Prominent moth was a new visitor to our Leavenworth, Kansas yard.

While there is an official National Moth Week, almost any time of the year can be its own moth week. There are still moths flying here in Leavenworth, at least until the first hard freeze. Turn on your porch light and see what lives in your own neighborhood.

Basswood Leafroller Moth, Leavenworth, Kansas.

NOTE: In the current, highly-charged political atmosphere, I strongly suggest navigating friends group websites for recreation areas, national parks, wildlife refuges, and other properties operated by the federal government, to avoid being subjected to biased and irrelevant content. Thank you.

The Yucca Insect Community

I am trying something new for this blog post. The last few weeks I have been paying close attention to yucca plants, especially the flowers, and taking many photos of the various insects (and spiders). We have a trio of plants in our front yard in Leavenworth, Kansas, USA, but I also examined plants in Okawville, Illinois, and one wild plant in eastern Missouri.

A tumbling flower beetle (top), and false flower beetle, nibble on pollen inside a yucca flower.

I created an album in my Flickr account here, with captions explaining most interactions and behaviors that I observed and documented. I am hereby directing you there to peruse the photos. I plan to keep adding photos to it, as I have many from last year that I have not yet uploaded even to my computer. Plus, there are a few more from Colorado. I thought I wrote an extensive blog post about yucca moths several years ago, but I can't find it if so.

Please let me know if this redirect is acceptable to you. There are other such communities of insects that might be easier to document this way, but if I receive negative feedback I won't repeat this experiment. Enjoy your summer!

2025 City Nature Challenge Recap for Kansas City Metro

The City Nature Challenge is an annual event that I always look forward to, when I have no conflicting engagements. I tend to plan around it, in fact. This year’s edition was held from Friday, April 27, through Monday, April 30.

Pearl Crescent butterfly from Wyandotte County Lake Park, Kansas.

Some background is in order for those unfamiliar with this urban bioblitz. What began in 2016 as a friendly challenge between the California cities of San Francisco and Los Angeles has blossomed into a global project. The intent is to generate public interest in native urban flora and fauna, document as many species as possible during the event period, and build a database useful for assessing environmental trends both locally and globally.

Dance fly, Rhamphomyia nasoni, on our back yard fence.

Here in Kansas City, I am fortunate that the official map area includes counties a fair distance from the city. It is mostly rural in Leavenworth County, Kansas, where we live, but the town itself is at least suburban. Heidi and I usually travel to other areas, too, like Wyandotte County, Kansas, and Platte County, Missouri.

Spring Tree-top Flasher firefly, Weston Bend State Park, Missouri.

The weather this year was less than optimal, overcast virtually the entire time, cool temperatures in the low sixties (Fahrenheit), and occasional rain. Perhaps that is why public engagement was low. The stats are still coming in to iNaturalist, the web platform that hosts the observations for the event, but we had less than 300 people who contributed sightings. As a percentage of the human population, that is pretty dismal.

This unidentified web-spinning sawfly was one of my favorite finds in Havens Park, Leavenworth, Kansas.

Still, there is a current total of 3,744 observatios of 1,084 species (however iNaturalist defines that term, and it probably varies by taxon). Help in identifying observations has come from 349 individuals, from all over the globe. The border of Kansas and Missouri represents the eastern fringe of the Great Plains meeting the western edge of the eastern deciduous forest, so we have some diverse and interesting habitats.

Ultra-tiny ribbed cocoon-making moths, Bucculatrix sp, are abundant in our yard right now.

Personally, given the inclement weather, I looked at plants more heavily than I usually do. It helped that I now have an iPhone that takes photos which are comparable in quality to those produced by my Canon PowerShot SX70 camera. I think it performs better than the camera in some instances.

I can't believe I found this beautiful pair of Oak Stag Beetles, Platycerus quercus, under a chunk of dead branch in a front yard flower bed (male top, female below).

When Heidi and I went out together, we focused on birds. This was especially true at Wyandotte County Lake Park in Kansas, and at Weston Bend State Park in Missouri. Both parks are heavily forested, with a large reservoir at one, and small streams running through the other.

This Blue Corporal dragonfly was one of three species of Odonata I found during the CNC.

I don’t like that the City Nature Challenge brings out my competitive nature, but I feel compelled to demonstrate to other local citizens that insects and spiders are worth looking at. Consequently, I had the most observations for the Greater Kansas City Metro Area, and the second highest species tally. You can find the results for everyone at this link.

American Idia Moth near the blacklight sheet.

I did get in a blacklighting session in the front yard one night, but there was precious little flying in the cool temperatures.

This female ichneumon wasp, Xorides peniculus, was a new species for our home, at the front yard blacklight sheet.

It is a good thing that the nature challenge was not a week later. I went back to Havens Park here in Leavenworth yesterday, May 5, to find that a new gravel road had been laid, right through a small, ephemeral wetland, and over glade habitat at the top of the park. I am devastated and angry. Rumor has it that it will eventually be another paved trail for cyclists, dog walkers, and others. I am all for accessibility, when it does not compromise ecosystems. I don’t know that I will go back to the park now, but there is nothing similar within walking distance of our home (I don’t ride a bike, nor drive any longer, and we only have one car anyway). Pretty much everything else here is lawns.

Baby Fork-tailed Bush Katydid at Havens Park.

One thing that appears sorely lacking for the City Nature Challenge is widespread publicity. There is a wonderful team of individuals at the Los Angeles County Museum of Natural History that organizes the event each year, but they can only do so much. They have to register cities, for example, which is a demanding chore all by itself. It is up to the individual metropolitan areas to do their own marketing.

Nursery web spider, Pisaurina dubia, Wyandotte County Lake Park.

Did you participate this year? Have you done so in years past? Please feel free to share your experiences in the comments. Oh, and check out my "non-bug" finds over on my Sense of Misplaced blog.