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Species Papaipema silphii - Silphius borer moth - Hodges#9498

Silphius borer moth - Papaipema silphii Silphius borer moth - Papaipema silphii Silphium Borer Moth - Papaipema silphii Papaipema, pre pupa - Papaipema silphii Papaipema, fresh pupa - Papaipema silphii Papaipema on Silphium, lateral - Papaipema silphii Papaipema on Silphium but reared in potato - Papaipema silphii Papaipema, lateral - Papaipema silphii
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Noctuinae (Cutworm or Dart Moths)
Tribe Apameini
Genus Papaipema (Borer Moths)
Species silphii ( Silphius borer moth - Hodges#9498)
Hodges Number
9498
Synonyms and other taxonomic changes
Papaipema silphii Bird, 1915
Phylogenetic sequence # 932511 (1)
Size
Bird (1915) reported a wingspan of 47-52 mm.
Identification
Bird (1915) original description is online and linked in the print references.
Bird (1915) described the larvae pinkish with a large, brown head, and maturing to a length of 50 mm or more.
Range
Cuthrell (2000) reported the species in Michigan, Missouri, Ohio, Illinois, and Wisconsin.
Moth Photographers Group map also includes Indiana, Iowa, Kentucky, and West Virginia. (2)
Habitat
Papaipema silphii is found in prairie regions.
Season
The main flight period is August to October. (2)
Food
Bird (1915) listed Silphium terebinthinaceum (prairie rosinweed). Also Silphium laciniatum (Matthew Kenne and MJ Hatfield).
Life Cycle
Bird (1915) reported the larva enter the blooming stems and bore to the root system. They eat through the root and pupate in the soil.

Life Cycle images:
larva in Silphium stem, larva, pre pupa, pupa, adult
Print References
Bird, H., 1915. New species and histories in Papaipema SM. (Lepidoptera). The Canadian Entomologist, 47(4): 110.
Cuthrell, D.L. 2000. Special animal abstract for Papaipema silphii (silphium borer moth). Michigan Natural Features Inventory. Lansing, MI. PDF