Acronicta (Viminia) grumi bicolor (Moore, 1881)

Volynkin, Anton V., Matov, Alexej Yu., Stüning, Dieter & Behounek, Gottfried, 2015, On the taxonomy of the genus Acronicta Ochsenheimer, 1816 (Lepidoptera, Noctuidae). I. Redescription of Acronicta grumi (Alphéraky, 1897), with notes on synonymy and its subgeneric placement, Zootaxa 4021 (2), pp. 395-400 : 400

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.

Figures

FIGURES 1 – 10. Acronicta spp.: adults. 1, A. grumi, holotype male, Tien Shan (ZISP); 2, A. grumi, male, holotype of A. tiena, [Kyrgyzstan, Kirgizsky Ridge] " Alexandergebirge " (NKMB, photo by W. Mey); 3, A. grumi, female, [Kyrgyzstan, Kirgizsky Ridge] " Alexandergeb. " (ZSM); 4, A. grumi bicolor, syntype of Acronycta bicolor, female, N India, Solun (© NHM) (photo by A. Zilli); 5, A. grumi bicolor, female, N India, Solun (ZISP); 6, A. grumi bicolor, female, China, Tibet (ZSM); 7, A. rumicis, female, West Siberia (AVB); 8, A. rumicis, male, SW Mongolia (AVB); 9, A. indica, male, N India, Sikkim (ZISP); 10, A. megacephala, type species of Subacronicta, European part of Russia, Tula reg. (ZISP).

FIGURES 11 – 16. Acronicta spp.: male genitalia. 11, A. grumi, holotype, NW China, slide Matov 0144; 12, A. grumi, holotype of A. tiena, Kyrgyzstan, slide MB 358 Boursin (photo by W. Mey); 13, A. grumi bicolor, China, slide Stüning 2288 - DS; 14, A. rumicis, East Kazakhstan, slide AV 0931 Volynkin; 15, A. indica, N India, slide Matov 0385; 16, A. digna, Russian Far East, slide AV 1499 Volynkin.

FIGURES 17 – 24. Acronicta spp.: male (17 – 19) and female (20 – 24) genitalia. 17, A. megacephala, type species of Subacronicta, Austria, Vienna, slide AV 1024 Volynkin; 18, A. grumi, aedeagus of holotype, diagnostically important sclerotized elements of vesica; 19, A. grumi, aedeagus of tiena lectotype, diagnostically important sclerotized elements of vesica; 20, A. grumi, Alexandergebirge, slide AV 1459 Volynkin; 21, A. grumi bicolor, China, slide AV 1460 Volynkin; 22, A. grumi bicolor, N India, Solun, slide Matov 0396; 23, A. rumicis, Russia, Altai Mts., slide AV 1501 Volynkin; 24, A. indica, Nepal, slide Stüning 2289 - DS.