South Dakota Counties

This distribution chart is a compilation of information from Paul Opler's Moths of North America Website, the Lepidopterists' Society Season Summary, Lemaire's Hemileucinae 2003 and personal communication with many residents of South Dakota. See comments below the map.

Actual ranges may, in many cases, be more expansive than noted, but South Dakota is well known as a transition state where many of the silkmoths common to the eastern United States are no longer found.

Luna is found only in the east; H. columbia gloveri and Coloradia doris and pandora are found only in the west; cecropia and polyphemus are probably widespread and fairly common.

Clicking on a scientific name will take you to a file with pictures and/or information.

# Automeris io
# Coloradia doris
# Coloradia pandora
# Hemileuca nevadensis

X Hyalophora cecropia
X Hyalophora columbia gloveri

+ Actias luna
+ Antheraea polyphemus

Non-member MyRon Zimmer writes, "The Polyphemus Moth that I found was on 2 JULY 2011. On my street corner ..... Bowdle, SD, Edmunds Co.

Member Jeff Schumacher writes, "I have found both H. cecropia and A. polyphemus in Brookings county where I live, and H. cecropia in McPherson county, South Dakota, where I grew.

Non-member Sara Painter of Rapid City, Pennington County, sent me an image of an Hyalophora cecropia fifth instar larva, hopelessy parasitized, on August 24, 2009.

Non-member John Masterton reports, "I live north of the town of New Underwood about 20 miles east of Rapid City (Pennington County). I was on your P.E.I. site and was reading about the Hyalophora columbia gloveri and where they are found. Just thought I would tell you that they are found here as I have raised 100's of them. We also have Hyalophora cecropia, Automeris io, Antheraea poylphemus and a cross that looks like the old gloveri pictures.

John also reports Coloradia doris and Coloradia pandora from the Black Hills in Pennington County.

Non-member Tom Middagh sends the following image of Actias luna from Clay County, in southeastern South Dakota. The colouration (absence of burgundy-red-maroon borders) and timing (July 22, 2006) of this specimen, suggests there is possibly an earlier brood.

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