September 11, 2015 at 6:33 am (insects (other), singing insects)
Tags: black-sided pygmy grasshopper, Chorthippus curtipennis, Conocephalus brevipennis, Conocephalus fasciatus, four-spotted tree cricket, gladiator meadow katydid, Hickory Grove, Lyons prairie and marsh, marsh meadow grasshopper, McHenry County, Oecanthus quadripunctatus, Orchelimum gladiator, Pleasant Valley Conservation Area, short-winged meadow katydid, slender meadow katydid, Tettigidea lateralis
by Carl Strang
On September 3 I drove up to McHenry County, Illinois, to continue my regional survey of singing insects. I spent most of that hot afternoon at the Pleasant Valley Conservation Area.
This county park has some very good woodlands and savannas.
The day produced 7 county records.
My first four-spotted tree cricket in McHenry was at Pleasant Valley.
A shift to the Hickory Grove Conservation Area produced additional observations, some of them remarkable.
The most unexpected find was a small group of gladiator meadow katydids, still singing weeks after they normally are done.
The photo shows the characteristic pronotum profile and cerci. The marsh habitat and the distinctive song pattern, with the ticks finishing, rather than preceding, the buzz portion of the song all were consistent with gladiator meadow katydid. The black spots on the abdomen may be signs of a parasite load; could that have delayed the completion of development?
The same site produced this marsh meadow grasshopper.
The Lyons Prairie and Marsh, administered as part of Hickory Grove by the McHenry County Conservation District, actually is in Lake County. I followed the trail into a portion of the marsh dominated by reed canary grass. In addition to abundant slender and short-winged meadow katydids, I got an intriguing glimpse at a female Orchelimum that might have been a dusky-faced meadow katydid, which I have yet to find in Illinois. I was unsuccessful in getting a better look in that late afternoon, but at some point I need to get back there for a thorough search.
On the way back to the car I spotted this tiny grasshopper. Mature at around 3/8 inch long, it is a non-singing species, the black-sided pygmy grasshopper.
August 20, 2014 at 5:53 am (singing insects)
Tags: common true katydid, Conocephalus fasciatus, Coral Woods, Elizabeth Lake, Forbes's tree cricket, fork-tailed bush katydid, Hickory Grove, Lyons, McHenry County, Oecanthus forbesi, Pterophylla camellifolia, Scudderia furcata, Scudderia texensis, slender meadow katydid, Tanacetum vulgare, tansy, Texas bush katydid
by Carl Strang
On Friday I took a vacation day to check out some sites in McHenry County for their singing insect potential. I saw parts of 4 widely scattered Conservation Areas (their equivalent of Forest Preserves), and picked up 4 county records for my study along the way.
Within minutes of arriving at the first site, Elizabeth Lake, I spotted this bush katydid feeding on a tansy flower head.
The small body size, and the shape of the ovipositor, identified this female as a fork-tailed bush katydid.
That was not one of the county records, but I did pick up two at that site: Forbes’s tree cricket, and slender meadow katydid.
The area with the greatest potential proved to be Hickory Grove-Lyons. These areas are a political oddity. Though the Lyons portion is in Lake County, it is cut off by a bend of the Fox River, and so managed by the McHenry County Conservation District.
A boardwalk leads through a high quality marsh at Hickory Grove. Other marshes and woodlands in this, and the adjacent Lyons area, are priorities for future exploration.
The year’s first Texas bush katydids, which also provided a county record, were singing in that marsh. The fourth county record, common true katydid (which seems oddly uncommon in McHenry), came at a good-looking forested preserve, Coral Woods. I look forward to return visits to some of these sites.