2019 Bioblitz

by Carl A. Strang

Each year the Indiana Academy of Science co-hosts a bioblitz somewhere in that state. This year’s site was The Center at Donaldson, which includes a retreat center and Ancilla College, plus surrounding properties. I always take the singing insects in this annual 24-hour count of species, but no one came to cover Lepidoptera or Odonata in 2019, so I appended them to my commitment. That is just as well, because these events are scheduled early enough in the season that few singing insects have reached the adult stage.

Some Roesel’s katydids matured in time for the bioblitz.

Two of the five singing insect species I found were common early species that were nearly finished, two were common mid-season species recently coming into song, and one of them provided an observation of significance. The eastern striped cricket is thinly scattered in northwest Indiana, possibly expanding into that region from the south or west. A single male singing in the evening provided a Marshall County record, a full county’s width farther east than I have observed them before.

I enjoyed re-acquainting myself with the beauty of dragonflies, damselflies, butterflies and moths, and photographed many of them.

The widow skimmer was the most abundant dragonfly.

Most of the eastern or common pondhawks still were green. Males will change to blue over time.

The Halloween pennant pleases the eye.

There weren’t many damselflies. Here, a blue-fronted dancer.

Newly emerged eastern forktail females are orange.

A few monarchs graced the grounds.

There were many great spangled fritillaries, plus this meadow fritillary.

I encountered a few moths during the day, but most came to my ultraviolet light setup in the forest, or the Purdue team’s assorted bright lights in the open. Moths are underappreciated for their beauty, diversity, and ecological significance.

Large lace-border, Scopula limboundata

Reversed haploa, Haploa reversa

Painted lichen moth, Hypoprepia fucosa

Delicate cycnia, Cycnia tenera

Isabella tiger moth, Pyrrharctia Isabella

Imperial moth, Eacles imperialis

Hermit sphinx, Lintneria eremitus

Snowy-shouldered acleris, Acleris nivisellana

Oblique-banded leafroller, Choristoneura rosaceana

Grape leaffolder, Desmia funeralis

Grape plume moth, Geina periscelidactylus

Large maple spanworm, Prochoerodes lineola

Lesser maple spanworm, Macaria pustularia

Small engrailed, Ectropis crepuscularia

Ovate dagger, Acronicta ovata

Pink-barred pseudostrotia, Pseudostrotia carneola

The Hebrew, Polygrammate hebraeicum

The brother, Raphia frater

Along the way I encountered a few other species to add to the species count.

Narrow-winged grasshoppers were common on the bioblitz base camp’s sandy hill.

A Pennsylvania wood cockroach came to the UV light.

The light also drew this striking summer fishfly.

 

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Showy Insects at the Lights

by Carl Strang

The rain stopped for a while on the night of the Hills of Gold bioblitz in Johnson County, Indiana. I set my single ultraviolet light on a hilltop, following a muddy climb up a steep logging trail. My light faced a different downslope than the nearby, more elaborate multi-light array of the Purdue beetle team led by Jeff Holland. My aim was moths, and a satisfying variety came to the sheet lit by my UV tube. Today I will share photos of some of the more spectacular insects we found.

The biggest was this tulip-tree silkmoth which came to one of the Purdue lights.

The biggest was this tulip-tree silkmoth which came to one of the Purdue lights.

Two of these beautiful, strikingly marked green moths came to my station. Their English name is appropriate: green marvel.

Two of these beautiful, strikingly marked green moths came to my station. Their English name is appropriate: green marvel.

Another eye-catcher was this one, curiously named The Hebrew.

Another eye-catcher was this one, curiously named The Hebrew.

The unadorned carpet was one of the moths commonly encountered during the day. One came to the sheet as well.

The unadorned carpet was one of the moths commonly encountered during the day. One came to the sheet as well.

The splendid palpita has attractive patches of pinkish brown on all four wings.

The splendid palpita has attractive patches of pinkish brown on all four wings.

According to its page in the BugGuide website, the brown-spotted zale actually is a species complex containing several species distinguishable only by dissection.

According to its page in the BugGuide website, the brown-spotted zale actually is a species complex containing several species distinguishable only by dissection.

That last point may well be true of many of the moths of the North American forests. This is where I need to compromise my reluctance to collect insects. There are enough instances of sibling species or cryptic species among the moths that voucher specimens are necessary. Given the growth of DNA analysis, two specimens per species per site may be the standard I will need to follow, so that one or part of one could be sacrificed to future chemical analysis. From an ecological as well as an evolutionary standpoint, the existence of these cryptic species is an interesting problem that needs to be sorted out.

Of course, many insects other than moths came to my sheet. This fish fly appears to be Chauliodes pectinicornis.

Of course, many insects other than moths came to my sheet. This fish fly appears to be Chauliodes pectinicornis.

Several fiery searchers prowled my sheet and its vicinity. These large beetles are predators that frequently attack caterpillars.

Several fiery searchers prowled my sheet and its vicinity. These large beetles are predators that frequently attack caterpillars.

Next time I will elaborate on other moths that were drawn to the lights. These illustrate a number of additional points about forest moth populations.

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