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A Key to the superfamilies of the Lepidoptera
with special reference to North and South Dakota
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4 (3).
Wingspan more than 20 mm, fw with a jugum, antennae less than length of head and
thorax. Hind tibiae without spurs.
Superfamily
Hepialoidea*
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Sthenopis thule, jugum indicated by arrow.
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Head of Stenopis purpuracens showing atrophied mouthparts.
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The single North American family is the
Hepialidae, Ghost moths or
Swifts. There are 537 species worldwide, 18 in North America and at least 2
species in North Dakota.
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4.’
Wingspan less than 15 mm, fw may have a short basal lobe (fibula), antennae
longer than head and thorax, hind tibiae with spurs. (These families are
not known from the Dakotas)
Go to 4a.
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Key
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