Acronicta (Viminia) grumi subsp. bicolor Moore 1881

Acronicta (Viminia) grumi bicolor (Moore, 1881) syn. & stat. n.

(Figs 4–6, 13, 21, 22)

Acronycta bicolor Moore, 1881, Proceedings of the Zoological Society of London 1881: 332 (Type locality: NW India, Punjab, Solun).

Type material examined. Photographs of syntypes: 1 female (Fig. 4), handwritten whitish label " Acronycta bicolor Type Moore" / printed whitish label "Moore Coll. 94–106" / printed round white label with red ring " Type " / white printed label with QR-code " BMNH (E) 1377132" (coll. NHM); 1 specimen without body, handwritten whitish label " Acronycta bicolor Type Moore" / printed whitish label "Moore Coll. 94–106" / printed round white label with red ring " Type " / white printed label with QR-code " BMNH (E) 1377133" (coll. NHM).

Other material examined. 1 female, Acronycta bicolor / [18]87, [India], Solun, May (coll. ZISP), genitalia slide Matov0396; 1 female, Tibet, Dsagar-Bg., 3000 m, Juli, Staatsslg. München, e. coll. F. Papp, genitalia slide AV1460 Volynkin (coll. ZSM); 4 males, 5 females, SW China, Yunnan prov., Lijiang, 2000–4000m, 18.v.1934; 9.v., 10.v., 12.v. (2 females), 13.v., 24.v., 23.vii., 22.viii.1935 (coll. ZFMK), genitalia slides Stüning 2288-DS, Kononenko 1780- ZFMK, 1781- ZFMK.

Diagnosis. A. grumi bicolor (Figs 4–6) differs externally from the nominate subspecies (Figs 1–3) by the darker and more monotonous blackish ground colour of forewings; in the male genitalia, A. grumi bicolor (Fig. 13) has a somewhat narrower apical part of valva, more or less C-shaped ampulla (in the nominate subspecies the ampulla is more or less Sshaped), less sclerotized medial part of vesica, and a longer and narrower sclerotized plate in medial part of vesica; in the female genitalia, A. grumi bicolor (Figs 21, 22) has a more chalice-shaped and stronger sclerotized antrum.

Distribution. The subspecies is known from the Himalaya and southwestern China.