"What a thousand acres of Silphiums looked like when they tickled the bellies of the buffalo is a question never again to be answered, and perhaps not even asked." -Aldo Leopold
These are some older photos that I posted on Facebook back in 2018 when I had the annoying habit of posting some interesting topics only on Facebook for some reason.
Schinia nr-jaguarina (French-grass flower moth)
Only discovered in 2012, this species of flower moth (Schinia nr-jaguarina) has yet to be described and named. This was photographed at Desplaines State Fish and Wildlife Area near Joliet Illinois. This species seems to be an obligate feeder on Orbexilum onobrychis (scurf pea, french-grass, among others). To read more about this recent discovery, head over to this location: http://jimmccormac.blogspot.com/…/interesting-moth-new…
Schinia nr-jaguarina (French-grass flower moth)
2023 Update This past weekend, the WGNSS Entomology Group spent the better part of a day exploring the wonderful Horn’s Prairie Grove LWR, just north of Vandalia, IL, and discovered a population of Schinia nr-jaguarina (apparently, this species has still not been officially described and the specific name given here is just a placeholder).
One of us collected a specimen to rear so I might be able to get photographs of an adult soon.
Tonight I’m just sharing some photos of a few lovely Lycaenid butterflies that I had the pleasure of photographing this season. The Lycaenidae family is the second largest family of butterflies, with about 6,000 species worldwide. The highlight was the bountiful season that the juniper hairstreak (Callophrys gryneus) had. Prior to this year, I had only seen one or two in a season, usually without my macro rig with me. In a few trips to the glades in Jefferson County this spring, Casey and I had at least two dozen individuals. They are not usually cooperative, but we worked pretty hard to get something.
First up is the afore mentioned C. gryneus.
A not so lovely eastern tailed-blue (Cupido comyntas)
The perfectly names spring azure (Celastrina ladon)
Miguel and I were offered a very special treat back in April when our new friends and gracious hosts, Rick and Jill, offered to show us a very unique and amazing animal, the Illinois chorus frog (Pseudacris illinoensis). The Illinois chorus frog is a species of study for Rick and his students, who are hard at work trying to document the life history and ecological details of this species of conservation concern. Existing in only a handful of counties scattered across Illinois, Missouri and Arkansas, this frog is classified as G3, meaning it is vulnerable to extinction. The primary forces causing the decline of this species is land development, primarily from agriculture.
Illinois chorus frog (Pseudacris illinoensis)
The Illinois chorus frog requires sandy wetlands. These types of areas are being lost due to drainage efforts for agriculture. The scattered remnants of these habitats are increasingly becoming isolated, likely limiting geneflow between pocketed populations.
Illinois chorus frog (Pseudacris illinoensis) attempting to back itself under the sand
The natural history of this species is incredible. Due to the quick draining nature of their preferred sandy habitat, these frogs spend 90% of their lives below ground. Their breeding season typically begins in February, where they take advantage of water from icy thaws and early spring rains to breed in ephemeral pools. By May, the frogs have buried themselves in underground tunnels that they dig with muscular forearms. Unlike most other frog species that spend large amounts of time in subterranean environments, the Illinois chorus frog is known to feed, eating worms and small invertebrates.
Illinois chorus frog (Pseudacris illinoensis). Here you can see the muscular forearms that these frogs need to burrow underground tunnels where they spend the majority of their lives.
Organizations like the University of Illinois, Illinois Department of Natural Resources and the Heartland Conservancy are doing a lot of work in a number of places to discover more about their ecological needs and protecting and managing habitat these frogs need.
Illinois chorus frog (Pseudacris illinoensis)
Another great thing Rick and Jill showed us were Illinois chorus frog tadpoles that were in artificial breeding “ponds” that were setup for them. As the hundreds of tadpoles we saw suggest, they were doing really well here.
Ever since seeing the photo of Disonycha discoidea in Arthur Evans’ “Beetles of Eastern North America,” I have been wanting to find and photograph this gorgeous Chrysomelid. I have looked for years for this species around St. Louis and southeastern Missouri, and even planted one of its host plants, Passiflora incarnata, in our yard hoping to possibly attract them.
Disonycha discoidea (passionflower flea beetle)
Just a couple weeks ago, my friend, Pete, posted a bunch of picks from his botany trip to southern Illinois on Facebook. As I perused through his collection of fascinating plants he found, I stopped at a photo of several beetles that were on a grape vine. In this photo was a single D. discoidea. Getting a little upset, I messaged Pete to see if he could tell me exactly where he had found this. He was at Giant City State Park and because of smartphone technology, he forwarded me his geotagged photo and I had access to exactly where he had taken the picture.
Disonycha discoidea (passionflower flea beetle)
However, I knew this was a big risk and I didn’t get my hopes up. First, Pete had taken his photo approximately a week before Sarah and I took the 2.5 hour drive south. In addition, the beetle he photographed was on a grapevine, not their typical host plant. Was this just an accidental occurrence of this beetle or could they use grapes as an alternative host? Nothing in the literature suggested that this occurred with this species; apparently, it is monophagous and only uses members of the Passiflora to feed.
We decided it was worth the drive. Giant City State Park is a high quality area and I knew that if we struck out we wouldn’t have to try hard to find something else of interest. We found Pete’s spot of original find pretty easily and started searching. After a couple hours of looking as hard as we could among the grape and poison ivy we decided we weren’t going to find the species there. Utilizing smartphone technology again, I thought it might be a good idea to look for Passiflora plants that had been documented in iNaturalist within the park. My phone signal was pretty poor, so we drove to one of the highest points we could find and I found a single spot that had these plants documented.
Disonycha discoidea (passionflower flea beetle)
These plants were found in a poor scrub prairie habitat along with blackberry and even more poison ivy. We started looking, finding and searching between 50 and 100 of these short plants. We looked very closely and I had a chance to try my DIY collapsible beat sheets that I made over the winter. No luck. I couldn’t believe it. I really thought we had a good chance. We knew the species had been found in the park and here we were within a sizeable population of the host plants. You’ve seen the photos already, so obviously we found our target. And, of course, insect finder extraordinaire, Sarah, was the one to find the beetle on a ragged, half-eaten P. incarnata plant. I immediately got to work photographing from a safe distance. One of the reasons they call them flea beetles is that they will jump great distances upon being disturbed. Ultimately, we found four individuals all on the same plant. Thankfully, this species is quite large for a flea beetle and I didn’t need to get too close that higher magnifications would require.
The aposematic colored Disonycha discoidea (passionflower flea beetle)
So what’s up with that coloration? This species exhibits aposematism, also known as warning coloration. This is the same reason that unpalatable or downright toxic species like monarchs and milkweed bugs along with stinging predators like yellowjackets or velvet ants show warning colorations. Disonycha discoidea picks up cyanogenic glycosides from its Passiflora host plant, making it distasteful or toxic to would-be predators. By evolving this aposematism, the insects can advertise this and avoid the predators that would be on the lookout for an easy meal. In the tropics, a group of butterflies known as the heliconiines also acquire these toxic compounds from the larval feeding on Passiflora.
Disonycha discoidea (passionflower flea beetle)
It was great to finally find this target species. The larvae of this species is also quite photogenic. If I find the time to make a return visit this summer, I would love to find a few of them as well.
During my morning walk in our Chesterfield suburban neighborhood this morning, I found quite a fascinating thing! I ran across several groups of periodical cicadas (Magicicada spp.) that had emerged during the night. I estimate that I found approximately 250 of these large hemipterans without leaving the sidewalk!
An exuviae (shed exoskeleton) of a recently molted periodical cicada (Magicicada spp.)
A pile of periodical cicada (Magicicada spp.) exuviae found on a sidewalk underneath a young maple tree.
I am not quite certain about what exactly is going on here. Our next big emergence of these insects is supposed to occur next season in 2024 – the so-called “Brood XIX.” Brood XIX is composed of four species of periodical cicada (Magicicada tredecim, M. tredecassini, M. tredecula, and M. neotredecim) that all follow the 13 year emergence pattern.
A periodical cicada (Magicicada spp.) nymph. This one is a little behind the others. They usually climb up and fasten themselves to an anchoring place to make their final molt into their adult form during the early night hours.
Ecdysis in action! I wish I had my good camera with me on my walk. This is a periodical cicada (Magicicada spp.) making its final molt and will begin its adult form. It took approximately 13 years to get this far.
Why are we seeing these emerge this year? A couple of possible explanations could account for this. These could be “stragglers,” the term used to describe individuals that emerge in years before or after the bulk of the particular brood. This makes evolutionary sense; if the entire brood emerged all on the same year (emergence of the entire brood within a given location occurs within a couple of weeks) and they are struck with a weather or some other disaster, then this would be a very bad day for the brood. With some individuals emerging a year or two before or after the primary year, then this would obviously be beneficial in hedging their bets.
Here you can see a freshly emerged adult periodical cicada (Magicicada spp.) that is still hanging on to its last shed exuviae.
A newly emerged adult periodical cicada (Magicicada spp.) that has not yet hardened its exoskeleton and developed the dark colors that should come over the next few hours.
Another possible explanation is that this could represent a sub-population of Brood XIX that is on a slightly different schedule and may routinely emerge early. This could be due to differences in climate patterns between this one and what the rest of the brood experiences. Brood XIX covers a large area of the southeastern U.S.
An adult periodical cicada (Magicicada spp.) that is waiting for its new shell to dry.
Or, could this be the result of some differentiation between emergence patterns between the four species that constitutes Brood XIX? I don’t know but I would love to hear any thoughts from those of you who are more educated and experienced in these things than I am. I will be keeping my ears open during the next several weeks with hope of hearing this rare song.
An adult periodical cicada (Magicicada spp.) that has made it to its last stage in life and is getting ready to fly into the treetops to find a mate.
I finally had the opportunity to visit my buddy Jim’s property to check out the nest site of a Great-horned Owl nest. This pair has used this snag for about 5 years to raise their brood and I am disappointed in myself for not visiting sooner. I had no idea how perfect the views into this nest were. You couldn’t ask for a better setup. Unfortunately, I was a bit late this season as well. The chicks fledged within days of my first and only visit. Hopefully next year!
Here are a few from my visit. These were taken in early afternoon so the light was a bit harsh.
I can’t believe it’s been more than a year since this trip and I still have quite a few photos to share. Not much time or gumption to post much lately. Here are some photos of one of the more abundant shorebirds we had on this particular visit – the Semipalmated Sandpiper. It was fun and interesting to see so many individuals up close. You can really see variations in individual plumages at this time of year, as I hope this collection shows
The Long-eared Owl has been on my top most wanted list for adding to my photographed species list for nearly 15 years. During this past New Years Eve, I finally found that opportunity.
Long-eared Owls are a bit different in that they hold and keep winter roosting sites, sometimes using the same trees or a single tree for these winter roosts year after year. This was the case here, where we found five birds roosting in a couple of exotic pine trees. Unfortunately, all but the one pictured here were too far in the mix of branches to be photographed. I am sure happy to have this one.
I had heard that this species is particularly weary, flushing with the least provocation. I did not find this to be the case at all with this group. Yes, this was a hard to find location and they do not likely see many visitors. When we stepped from the car they did become aware, moving their heads back and forth to get better looks at us from between branches. But, with keeping low voices, slow movements and respectful distances, they got used to our presence fairly quickly. I was even amused that they began ignoring us, turning their backs to us, going back to sleep and having what seemed to me normal behaviors and interactions. We stayed until dusk at which point they began stirring, moving from perch to perch and interacting with one another. This was too dark for still photographs but I did collect a little bit of video that I hope to process and share someday.
I know this is a sought after species in our region. This roost is on private property in which we were invited. I will not be able to share the location information for this site. Thanks for understanding.
A Thousand Acres of Silphiums 