Synonyms and other taxonomic changes
Hemipenthes seminigra Loew, 1869
Anthrax eumenes Osten Sacken, 1886
Villa eumenes, Hemipenthes eumenes
Head: Round; black with a few golden scattered hairs. Males and females identical.
Antenna: Very short, black.
Thorax: Brown-black. Main ID: an obvious white line of hairs down each side of thorax, extending past wing bases.
Wings: Base half of wings dark brown with step-like border. Often has a faint white spot in middle of brown area.
Legs: Brown, dark brown or sometimes yellowish-brown.
Abdomen: Brown-black with white tufts at side edges of segments 1 to 3 or 4; and sometimes on 7. Some faint white hairs across middle segments
Nearctic: Canada Alberta and Ontario;
USA (AZ, CA, CO, ID, MT, NV, NM, OR, WA)
Neotropical: Puerto Rico
Forests and forest edges.
June and July in the north.
Known larval hosts for Hemipenthes in general include both Lepidoptera and diprionid sawflies and the tachinid flies and ichneumonoid wasps parasitizing them.
Holotype as Hemipenthes seminigra by Loew, 1869. Type Locality: Saskatchewan. In the Museum of Comparative Zoology, Harvard, Cambridge, Massachusetts.
Lectotype as Anthrax eumenes female by Osten Sacken, 1886. Type Locality: Mexico. In the British Museum of Natural History, London, England. Lectotype male designated by Painter and Painter (1962).
Berliner Entomologische Zeitschrift, 1869, Vol. 13 by Loew, pp. 27-28.
Biologia Centrali-Americana, 1886-1901 by Osten Sacken, pg. 115 and pp. 131-132.
Journal of the Kansas Entomological Society 1962, vol. 35, by Painter & Painter, pg. 102.
Zootaxa, 2009, #2074 Hemipenthes by Avalos-Hernandez, pp. 37-38.