Bioblitz Species Hunt

by Carl Strang

Yesterday I introduced last weekend’s bioblitz at Connor Prairie in Indiana. My focus as a bioblitz participant is on singing insects, of course, but those are few early in June, even as far south as Indianapolis. Not to worry, though. There were teams focusing on many groups of organisms, but others had no specialists to address them, so I enjoyed filling in where I could. Odonata were one such group.

Twelve-spotted skimmer

Twelve-spotted skimmer

Powdered dancer

Powdered dancer

After much pondering, I concluded this was a female cobra clubtail. Indiana has a similar species, the handsome clubtail, but certain details ruled it out.

After much pondering, I concluded this was a female cobra clubtail. Indiana has a similar species, the handsome clubtail, but certain details ruled it out.

For instance, the C-shaped line at the top of the side of the thorax is connected, and apparently too thick for a handsome clubtail.

For instance, the C-shaped line at the top of the side of the thorax is connected, and apparently too thick for a handsome clubtail.

I also saw three bumblebee species.

Bombus fervidus was an easy ID.

Bombus fervidus was an easy ID.

There was a butterfly team, but I took advantage of photo ops that presented themselves.

Variegated fritillary

Variegated fritillary

Nevertheless, my main interest was singing insects. I found 4 species, and botany team leader Scott Namestnik added a 5th.

Green-striped grasshoppers were common, as were spring field crickets.

Green-striped grasshoppers were common, as were spring field crickets.

I saw a single sulfur-winged grasshopper. Scott ran across a pocket of Roesel’s katydid nymphs. Connor Prairie is about even with the Crawfordsville area where I found Roesel’s a couple years ago. So far, none have turned up farther south in Indiana.

The final species is worth a blog post all its own (to be continued).

Butterflies

by Carl Strang

Butterflies are the most conspicuous insects, and to the extent that they are representative, they are telling us that insects got through the winter in pretty good shape. Butterflies have been abundant and diverse this spring, both species that wintered here and ones that have migrated north. Earlier I mentioned red admirals in this context, and their congeners the American lady and painted lady butterflies have been showing up as likely migrants as well. A member of a species new to my experience appeared at Mayslake Forest Preserve last Thursday.

Obviously a fritillary, it seemed too big for a meadow fritillary and too small for other species of my acquaintance. Also, it lacked silvery spots beneath the hind wing.

My practice is to photograph doubtful cases when I can, and this time it paid off. The newcomer is a southern species known frequently to wander north, the variegated fritillary.

On Friday I saw 3 question mark and 2 mourning cloak butterflies.

One of the question marks, named for the pale silvery small markings on the underside of the hind wing.

That in itself is not all that unusual, as I have seen both species at Mayslake before. What seemed odd was, in this butterfly-rich spring, these were the first of both species I have encountered on the preserve. Both overwinter as adults, and back in March during the warm weather we experienced, I would expect to have seen them, especially with multiple sightings of both species happening now. What gives? Yet another little mystery to tuck away in memory.

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