October 27, 2016 at 5:47 am (singing insects)
Tags: Allonemobius maculatus, Arphia xanthoptera, autumn yellow-winged grasshopper, Gar Creek, Illinois Beach State Park, Neonemobius variegatus, Orchelimum concinnum, spotted ground cricket, St. James Farm, stripe-faced meadow katydid, variegated ground cricket
by Carl Strang
October’s cold gradually is silencing another year’s array of singing insects. In recent weeks I have made some final trips to squeeze just a little more data out of the season.
In early September I succeeded in catching an Autumn yellow-winged grasshopper with actual yellow wings (most of them in the region have had red-orange hind wings).
On October 5 I made a final trip up to Illinois Beach State Park, and found some stripe-faced meadow katydids still singing.
By then, of course, they had developed their full color.
I was able to complete a photo series on the species with some cerci shots.
On October 11 I returned to Gar Creek Forest Preserve in Kankakee County and made more recordings. I did not find any more Cuban ground crickets crossing the trail, but was surprised by several variegated ground crickets doing so.
I had never before seen a variegated ground cricket, like this male, wandering in the open.
This female has an interesting pattern of pale dashes on her wings.
It’s reasonable to assume that they walk about at night for most of the season, but like many singing insects extend their usual nighttime activity into the day as temperatures cool. I was glad to get the visual confirmation that this species is at the site along with the (probable) Cubans.
Probably my last singing insect photo series for 2016 was of this spotted ground cricket at St. James Farm on October 18.
August 30, 2016 at 6:36 am (singing insects)
Tags: Arphia pseudonietana, Arphia xanthoptera, autumn yellow-winged grasshopper, Bendix Woods, Conocephalus strictus, handsome grasshopper, Midewin National Tallgrass Prairie, northwestern red-winged grasshopper, straight-lanced meadow katydid, Syrbula admirabilis
by Carl Strang
A couple years ago I came across a population of large band-winged grasshoppers with bright red hind wings, at St. Joseph County’s (Indiana) Bendix Woods. Focusing on the intense red color, I declared them to be northwestern red-winged grasshoppers. In the first half of August this year I ran into a second population in Illinois, at the Midewin National Tallgrass Prairie.
They had the same bright red color as at Bendix Woods.
These are large grasshoppers, approaching Carolina grasshoppers in bulk.
This time, though, I noticed a discrepancy in my ID that should have struck me the first time.
There is a honkin’ big bulge on the top of the pronotum.
The northwestern red-winged grasshopper, which I now realize I have yet to meet, has a flat pronotum profile that furthermore is cleft by a significant fissure. These prove to be autumn yellow-winged grasshoppers, which in fact can have a range of colors in the hindwings. The following week, returning with fellow singing insect enthusiasts Lisa Rainsong and Wendy Partridge from Cleveland, and Wil Hershberger from West Virginia, we found many of these grasshoppers in fact have bright yellow wings. I need to get back there and get a photo of one for my singing insects guide.
While checking out the grasshoppers, we turned up two other species that were county records for my study.
The handsome grasshopper always is a delight. This one is a male.
Female handsome grasshoppers have green highlights in place of the male’s brown ones.
Though still a nymph, this female is unambiguously a straight-lanced meadow katydid. The extra-long ovipositor and the diffuse-edged black band on the hind femur are giveaways.
Our main target in that visit was the dusky-faced meadow katydid, but that proves to be a much more complicated story deserving of its own blog post.