A Day of Bush Katydids

I was at our family prairie for a while last weekend, checking on grazing progress and generally catching up on what’s been happening.  There were several highlights of the trip, but one big one was that I saw LOTS of bush katydids.  Apparently, they had gone through their final molt to adulthood recently because they were flying all around the prairie (nymphs don’t have functional wings).  They were flushing away from my feet as I walked, which was nice because then I could watch where they landed.  That was about the only way I could spot them because of their impressive camouflage.  During a couple hours on site, I was able to track and re-find enough katydids to get quite a few photographs (all the photos in this post were from the same evening).

Bush katydids are exquisitely beautiful.

Katydids are similar to grasshoppers, but are in different suborders (meaning they split off fairly high on the taxonomic tree).  If you’re of a certain age, or read older natural history books, you may have first learned to call them “long-horned grasshoppers”, but that’s a fairly outdated term nowadays.  Katydids are pretty easy to distinguish from grasshoppers by their antennae length.  Grasshoppers have short antennae, while katydids have very long threadlike antennae – usually longer than their bodies.

Bush katydids (Genus Scudderia) are one of several groups of katydids, and tend to have a very green leaf-like appearance.  They are so leaf-like, in fact, most of us probably walk past many more of them than we notice, despite the fact they are pretty big insects (often over 2 inches in length).

Males of these and other katydids make courtship “songs” by rubbing their wings together.  While we hear those sounds through the ears on our head, katydids hear sounds through tympanum located on their legs.

The dark oval on the leg of this bush katydid is the tympanum, or ear.

Here are more photos of bush katydids from last weekend.  I saw a lot more of them than I photographed…these are just the ones that sat still long enough for me to get within range (some of them flew a couple times before giving up and letting me take their picture).

Crickets and katydids, including bush katydids, provide much of the evening sound in prairies.  There are many websites that feature those sounds, but here is one that is set up pretty well to help you distinguish between the various species.  If you can’t find them by sight, maybe you can at least find them by ear!

Hubbard Fellowship Blog – Olivia Finds a Fancy Moth

This post is by Olivia Schouten, one of this year’s Hubbard Fellows.  In this post, she shares a quick story about a moth she stumbled upon while doing invasive species control work.

Searching for musk thistles has given me a great way to explore every last corner of our properties here on the Platte, finding some cool things along the way! While we need to remove them, there’s no question that musk thistle flowers attract a wide assortment of pollinators, and it was on one such musk thistle that I found one of the coolest moths I’ve ever seen.

Look at this neat little moth!  (Photo by Olivia Schouten)

This little guy caught my eye as I approached this thistle, and I just had to stop and inspect it. It was about the size of one of my fingernails, and one of the fanciest insects I’ve had the pleasure of seeing. Its wings looked like a bright red dress fringed with lace, with a golden furry cape thrown over its shoulders. I’ve always thought moth faces are cute, and this one was no exception, with its big green eye watching me warily as I stuck my phone in its face to get a few pictures.

A little online searching later and I identified it as the Indian blanket moth (Schinia volupia), a southern plains species that lays its eggs exclusively on Indian Blanket (Gaillardia pulchella), a prairie wildflower that is just as brilliantly yellow and red as this moth. I’m not entirely sure if this coloring of the moth is meant to act as camouflage while it sits on the host flowers, but I don’t think it’s a stretch to say that its fancy coloring probably doesn’t hurt (though it certainly made it more obvious when sitting on a different flower). The larva are just as striking, with red and white stripes running vertically down the caterpillar’s body. They feed exclusively on Indian blanket, though the adults will likely visit different species of Asteraceae for nectar.

Overall, it was great to get a chance to see this cute little specialist moth, and I’ll definitely be looking closer when I pass a patch of Indian Blanket in the future!