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A Key to the superfamilies of the Lepidoptera
with special reference to North and South Dakota
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5 (3').
Proboscis, even when atrophied, covered with scales at base. Labial palpi
almost always either porrect and beak-like or upturned beyond vertex and
'sickle-shaped.' Go to 6.
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5.' Proboscis
naked, can be atrophied or absent. Palpi variable
Go. to 7
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