Stalwart regular and crack arthopod photographer Mark Sturtevant has sent us photos of spiders, lepidopterans, and assorted insects. His captions are indented, and you can enlarge his photos by clicking on them.
The various arthropods shown here were all photographed from my area in eastern Michigan. Most were taken in the field, but a couple were staged shots. Let’s begin with spiders.
The first is a new species for me. This is the Butterfly Orbweaver, Araneus pegnia. The name comes from the white four-lobed marking on the abdomen. Although very stretched in this gravid female, in thinner individuals it does look like a four-winged butterfly.

Next up is my highly reliable always-there-for-me-in-case-I-need-it jumping spider, usually called the Tan Jumping Spider (Platycryptus undatus). They are common on our shed, but lately they are also turning up on our front and back porches. This is perhaps because I often leave the porch lights on these days to draw in nocturnal insects. This adorable male was photographed as a manual focus stack on the dining room table. You can see the reflection of my home-made flash diffuser in the eyes, along with the black outline of the lens. As usual, I forgot to remove the clamp of the Raynox diopter lens that is used to boost magnification, and so you can see that too in the reflection.

A small obsession with me lately is shown with the next spider. This is the Candy-striped Spider, Enoplognatha ovata, and she has the remains of a small Hemipteran on a daisy flower where she was hanging out. Candy-striped Spiders are in the family of cobweb-weaving spiders (which includes our common house spiders and widows), but this species lives our in the sunshine, and is commonly seen lurking just under the flowers of herbaceous plants. One item of notoriety about them is that they prowl around their plants at night, looking for sleeping insects which then never wake up. So, I regularly scour our gardens to keep track of the known spiders to see what they have been up to. They almost always have prey on hand, and after a good night they may have several insects with them. I call these collections “a little shop of horrors”, inspired by their nocturnal habit of dining out.
The last of the spiders is a Hammock Spider, Pityohyphantes costatus. They build untidy hammock-like webs on plants in forests, and they too seem to do quite well. This one got a Long-legged Fly (Dolichopodidae), which are super alert flies with very fast reflexes as any macrophotographer will know:
That will be all for spiders. Next up are Odonates. This little damselfly is the Eastern Forktail (Ischnura verticalis). I really need to get more damselfly pictures since there are so many species that I have never photographed. A long focal length macro lens would help immensely!
The next Odonate is one of my favorites. This is the Calico Pennant Dragonfly (Celithemis elisa). Mature males like this one are stunningly colored with deep reds, while the similar females have yellow coloration:
A place that I call the Magic Field has a very dense population of grasshoppers. One of my favorite species commonly seen out there are the Carolina Grasshoppers (Dissosteira carolina), But surely everyone in the U.S. and parts of Canada are familiar with them. Adults have boldly contrasting black and yellow hind wings, as shown in the linked picture, but with wings folded at rest they are well camouflaged. The grasshoppers are divided about evenly into two color morphs, and these are shown here as nymphs that were picked up in the Magic Field for staged pictures on the dining room table. The combined picture is a bit of post-processing trickery since they were photographed separately:
The next picture is a katydid that was also found in the Magic Field. This is a nymph of the Fork-tailed Bush Katydid (Scudderia furcate). It was systematically cleaning all 6 feet without any concern about my proximity:
The little planthopper in the next picture was pulled in from the porch lights mentioned above. This is Tylozygus bifidus:
Lets’ wrap this up with Lepidopterans. It is always a special day to find the caterpillars of giant silk moths, but the species that seems almost common are Promethea Moth caterpillars (Callosamia promethea). These grow into beautiful pastel colored caterpillars the size of large pickles, and later into a palm-sized moth like the one shown in the link. But for now, these youngsters were the size of rice grains. The younger caterpillars tend to stay together through their early instars. It was neat that they had even molted together.
The swarm of recently hatched caterpillars in the next picture were found on a swamp milkweed leaf, so they should be Milkweed Tussock Moth caterpillars (Euchaetes egle). These don’t look like much now, but later they grow into flamboyantly furry caterpillars.
Lastly, we have our largest butterfly, the Giant Swallowtail (Papilio cresphontes). I was following it for some time, taking pictures, and here it was nicely photo-bombed by a Common Eastern Bumblebee (Bombus impatiens):


















































































