"What a thousand acres of Silphiums looked like when they tickled the bellies of the buffalo is a question never again to be answered, and perhaps not even asked." -Aldo Leopold
Spotted Phosphila
Phosphila miselioides fam. Noctuidae (Hodges#9619)
Host plant: Found on greenbrier (Smilax sp.)
Date found: 16, Aug, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: Two species of Phosphila can be found in Missouri. This was found during the WGNSS joint Entomology and Nature Photography Groups’ outing to Council Bluff Lake.
Tufted Bird Dropping Moth
Cerma cerintha fam. Noctuidae (Hodges#9062)
Host plant: Host plant not recorded but species is known to feed on Rosaceae Family members
Date found: 16, Aug,, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: As should be obvious by the common name, the adults of this moth are bird dropping mimics. These caterpillars tunnel into soft wood at the end of the season where they overwinter as a pupa.
Promethea Silkmoth
Callosamia promethea fam. Saturniidae (Hodges#7764)
Host plant: Found on buttonbush (Cephalanthus occidentalis)
Date found: Sep, 2025
Location found: St. Louis County, MO
Notes: One of my notable “finds” of the season for me. This was my first look and photographs of this magnificent silkmoth species. Many thanks to Harit Kaur Bal who originally found a group of these caterpillars and to Chris Brown for inviting me over to photograph a couple of these beasts that he collected for rearing.
Red-washed Prominent
Oligocentria semirufescens fam. Notodontidae (Hodges#8012)
Host plant: Found on redbud (Cercis canadensis)
Date found: 16, Aug, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: This was found during the WGNSS joint Entomology and Nature Photography Groups’ outing to Council Bluff Lake.
Hummingbird Clearwing
Hemaris thysbe fam. Sphingidae (Hodges#7853)
Host plant: Found on nannyberry (Viburnum lentago)
Date found: 23, Aug, 2025
Location found: Backyard of our subdivision home
Notes: From what I’ve read and my minimal experience, this species’ caterpillars spend their days on the ground in the leaf litter and only come up to their host vegetation during the night. I found this one around midnight feeding on my nannyberry.
Edit – 21-Sep-25: I brought this guy in to rear on the back porch and on 16-September, I found the adult moth flying in the cage. After cooling it down a little to take some photos, I let it go into the backyard. See photos below.
Radcliffe’s Dagger
Acronicta radcliffei fam. Noctuidae (Hodges#9209)
Host plant: black cherry (Prunus serotina)
Date found: 16, 25, Aug, 2025
Location found: Cuivre River State Park, Lincoln County, MO; Council Bluff Lake, Iron County, MO
Notes: The final instar pictured here is dramatically different than earlier instars.
Pandora Sphinx
Eumorpha pandorus fam. Sphingidae (Hodges#7859)
Host plant: Virginia creeper (Parthenocissus quinquefolia)
Date found: 16, Aug, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: During its final instar, this sphinx caterpillar loses its horn and is replaced with a button (not pictured). This was found during the WGNSS joint Entomology and Nature Photography Groups’ outing to Council Bluff Lake.
Red-spotted Purple
Limenitis arthemis astyanax fam. Nymphalidae (Hodges#4522)
Host plant: Found on black cherry (Prunus serotina)
Date found: 02, Aug, 2025
Location found: Trail of Tears State Park, Lincoln County, MO
Notes: Three caterpillars of this species were found at this date and location.
Here is another case of very similar caterpillars between two closely related species. The first clue to identity should be the host plant. In our region, Limenitis arthemis astyanax host primarily on black cherry (Prunus serotina), while Limenitis archippus (Viceroy) host primarily on willows (Salix sp.).
Caterpillars of L. arthemis astyanax are visually similar to those of , L. archippus although adults of these two species are very dissimilar. However, there are visual cues that can be used to tell them apart. Caterpillars of L. arthemis astyanax are generally less spiny, the humps over dorsum at A2 are larger and the “antlers” are more clubbed than the viceroy.
Red-humped Caterpillar Moth
Oedemasia concinna fam. Notodontidae (Hodges#8010)
Host plant: Found on redbud (Cercis canadensis)
Date found: 16, Aug, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: Shown in defensive posture with tail raised above its head. This was found during the WGNSS joint Entomology and Nature Photography Groups’ outing to Council Bluff Lake.
Virginia Creeper/Hog Sphinx
Darapsa myron fam. Sphingidae (Hodges#7885)
Host plant: Six individuals were found on this date and location: grape (Vitis sp.)-5, Virginia creeper (Parthenocissus quinquefolia)-1
Date found: 16, Aug, 2025
Location found: Council Bluff Lake, Iron County, MO
Notes: This one showing the autumn/pre-pupal warm/brown coloration. All other individuals found were green. This was found during the WGNSS joint Entomology and Nature Photography Groups’ outing to Council Bluff Lake.
A Thousand Acres of Silphiums 