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A Key to the superfamilies of the Lepidoptera
with special reference to North and South Dakota
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6a (6').
Forewings usually triangular, very rarely lanceolate, never linear. Tornal
angle of forewing forming nearly a right angle and with well developed
tornus (corner). Hind
wing with fringe at anal angle less than 1/3 wing width. Labial palpi almost always porrect
and ‘snout-like.’ Tympanal organs
nearly always present at base of abdomen.
Go to 6b |
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Loxostege sticticalis (Linnaeus |
Peoria approximella (Walker) |
Interjecto nivella (Hulst) |
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Maxillary and labial palpi of Loxostege cereralis
(Zeller) (left) and Agriphila vulgivigella
(Clemens) (center); abdominal tympanum of Udea rubigalis (Guenée)
(right). |
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6a'
Fws never triangular, usually rectangular, linear or lanceolate.
Tornal angle of fw at 110- 120o
or tornus poorly defined or absent. Hindwing with fringe at anal angle
usually > 1/3 wing width. Labial palpi usually erect, ‘tusk- like’
and projecting well beyond vertex, occasionally short and drooping. Tympanal organs
absent. Go to 6c
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Gelechioidea: Walshia miscecolorella (Chambers)
(top left);
Exaeretia gracilis (Walsingham) (top center);
Mompha eloisella (Clemens) (top right);
Head of W. miscecolorella showing long
upturned labial palpi.
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Key
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