OCR Text |
Show 1875.] SPECIES O F SPHINGIDCE. 245 the whitish discocellulars ; two wavy brown-edged whitish lines; a reddish streak near external angle, and a black spot on inner margin ; a brownish oblique nebula from outer margin near the angle to costa; outer margin partially but narrowly edged with dark brown: secondaries ochreous, outer margin broadly ferruginous, dotted with brown scales ; inner margin edged with blackish : body greyish brown ; abdomen reddish at the sides : wings below reddish ochreous, irrorated with brown; costa greyish, a whitish spot at end of each cell; primaries with inner margin grey, outer margin broadly brown ; secondaries with abdominal area yellowish, two central transverse brown lines: body below grey, sprinkled with ferruginous scales. Expanse of wings 1 inch 2-2^ lines. Silhet. Type, coll. F. Moore. Subfamily CHCEROCAMPINCE. Genus ACOSMERYX, Boisduval. General appearance of the Mimas group of the Smerinthina (Polyptychus): body more robust; male with a short anal tuft; palpi much larger ; wings shorter and broader ; primaries with outer margin subangulated in the middle and generally undulated ; discocellulars below obscured by long scales: secondaries much broader, costal margin more convex, inner margin longer; outer margin more or less undulated : larva of the Charocampa type. The larva of A. anceus is figured in Moore and Horsfield's Catalogue, pl. ix. fig. 4. I have also seen a figure sent by S. N. Ward (from Canara) to Mr. Moore, which appears to be either a variety of the same larva or a distinct but nearly allied species ; the moth not being so well figured as the larva, I cannot be certain ; it is possible that it may be A. sericeus : the anal horn of the larva is long, dark, and curved. 18. ACOSMERYX CINEREA, n. sp. Allied to A. sericea, but both sexes generally coloured as iu A. anceus 2 > silvery grey tinted with brown ; primaries crossed by six or seven oblique pale brown lines, and from costa to external angle by a brown bar ; outer margin brown, bordered internally by a nebulous silvery streak; secondaries crossed beyond the middle by a pale brown bar, apex and outer margin pale brown, bounded internally by a reddish tint: body brownish grey ; antennae testaceous : wings below very similar to M. sericea, but altogether paler, very slightly tinted with reddish ; secondaries crossed by four indistinct brown lines in pairs, apex grey : body below pale reddish brown. Expanse of wings 3 inches 7 lines. Silhet (Argent). Type, B.M. W e have three example of this species ; it may at once be distinguished from A. sericea (irrespective of coloration) by the less-produced primaries, with scarcely undulated outer margin. Mr. Moore has a pair from Silhet and N.E. Bengal, which have the primaries coloured like A. sericea. |