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J.
Wing morphology 1.
Wing coupling
mechanisms.
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Jugum, indicated by arrow, on fw of Hepialus thule
overlapping hindwing. |
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Humeral lobe, indicated by arrow, on hindwing of Dryocampa
rubicunda. |
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Frenular bristles from the base of the hindwing, held in
place by a retinaculum,
stiffened scales on the ventral forewing of Spaelotis clandestina. |
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