Autographa nigrisigna (Walker, 1857)
Synonyms
Plusia nigrisigna Walker, 1858
Autographa y-minus Chou & Lu, 1979
Type-locality
India
Distribution
Uttarakhand
Punjab
Himachal Pradesh
Delhi
Diagnosis
A. nigrisigna differs from its closely related species A. gamma by its greyish brown forewing and double antemedial and postmedial crosslines. Gamma mark more silvery than A. gamma.
Description:
Wingspan 37-40 mm. Forewing greyish brown, with black spots present on the lateral side of the cell, basal of the forewing & immediate above the sigma mark & dorsal side of the cell. U- mark touches the antimedial line. Gamma mark more silvery & two halves are separated & sometimes joined in male. The larger part of gamma mark outlined by silver colour & the smaller part is filled with silver colour. The subterminal line less sinuous. Hindwing light greyish brown & darker towards the margin. In male genitalia valvae broader with longer harpae. Vesica straighter & longer without spines. Only one cornuti is present on it.
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