Dolgoma xanthocraspis ( Hampson, 1900 )

Singh, Navneet, Kirti, Jagbir Singh, Datta, Harvinder Singh, Joshi, Rahul & Volynkin, Anton V., 2019, A review of the genus Dolgoma Moore from India, with notes on the genus taxonomy and descriptions of a new genus, four new species and a new subspecies (Lepidoptera, Erebidae, Arctiinae, Lithosiini), Zootaxa 4683 (1), pp. 33-54 : 36

Dolgoma xanthocraspis ( Hampson, 1900)

( Figs 5, 6 , 34 , 50 )

Ilema xanthocraspis Hampson, 1900 , Catalogue of Lepidoptera Phalaenae in the British Museum, 2: 149, 169, pl. XXII, fig. 30 (Type locality: [NE India, Sikkim] “Sikhim”).

Type material examined. Holotype ♀ ( Fig. 6 ), handwritten label “Darjiling 79-57” (upper side) / “ Systropha xanthocraspis type ♀ Hmpsn.” (bottom side) / handwritten label “Darjeeling, W. Lidderdale 79–57” / printed round label with red circle “Type” / printed label with QR-code “NHMUK010401823” (Coll. NHMUK).

Material examined. SIKKIM: 1 ♂, India, Sikkim, Phusrey Lake , 30.iv.2009, leg. Rahul Joshi, (Coll. NZC- ZSI) ; 1 ♂, India, Sikkim, Phusrey Lake , 30.iv.2009, leg. Rahul Joshi, (Coll. NZCZSI) ; 1 ♂, [NE India] Sikkim, 7000 ft., Aug. 1886, H.J. Elwes [leg.] / Collection H.J. Elwes / Rothschild Bequest B.M. 1939-I, slide NHMUK 01031530 Volynkin (Coll. NHMUK); JAMMU AND KASHMIR : 1 ♀, India, Jammu and Kashmir, Patnitop , 20.vii.2009, leg. Rahul Joshi (Coll. NZCZSI); WEST BENGAL : 1 ♀, [NE India, north of West Bengal] Darjeeling, W. Lidder- dale [leg.] 79–57 / Darjeeling 79–57, slide NHMUK 01031531 Volynkin (Coll. NHMUK) .

Remark. Daniel (1954) reported ‘ Systropha xanthocraspis Hps. ’ for China (Shaanxi, Shanxi and Yunnan). However, the genitalia illustrated by Daniel (1954: fig. 89) are not conspecific to the true D. xanthocraspis , but are conspecific to ‘ Dolgoma ’ lucida ( Fang, 2000) . This species was transferred to Dolgoma by Dubatolov & Zolotuhin (2011), but its male genitalia have significant differences from both Dolgoma and Teuloma (e. g., dentate apical processes of juxta) and are more close to those of Wittia de Freina, 1980 . Here we provisionally transfer lucida to the genus Wittia : Wittia lucida ( Fang, 2000) , comb. nov., but its generic placement needs further clarification.

Diagnosis. Forewing length is 12.5– 14 mm in males and 15 mm in females. Female has narrower forewing than male. Dolgoma xanthocraspis is recognized by its broad, pale yellowish forewings, sparsely irrorated with blackish scales; costa is orange medially and distally and black sub-basally. The male genitalia of D. xanthocraspis differ from those of D. reticulata by their much broader uncus, much broader valva, broader and shorter distal saccular process covered with more robust spinules, slightly larger aedeagus and vesica with larger diverticula. The differences between male genitalia of D. xanthocraspis and D. xanthoma are listed in the diagnosis of the latter. The female genitalia are characterized by the antrum slightly broadened posteriorly, the posterior section of corpus bursae being moderately sclerotized and not rugose, and the basal section of appendix bursae being weakly sclerotized and slightly rugose.

Distribution. The species is found in North-West and North-East India (Jammu & Kashmir, Sikkim and West Bengal).

Figures

FIGURES 1–8. Dolgoma spp., adults. 1, D. reticulata, ♂, NE India, Sikkim (©NHMUK); 2, D. reticulata, syntype ♀, NE In- dia, Darjeeling (©NHMUK); 3, D. reticulata, ♂, NE India, Sikkim (CKC); 4, D. reticulata, ♀, NE India, Sikkim (CKC); 5, D. xanthocraspis, ♂, NE India, Sikkim (©NHMUK); 6, D. xanthocraspis, holotype ♀, NE India, Darjeeling (©NHMUK); 7, D. xanthoma, holotype ♂, N India, Uttarakhand (NZCZSI); 8, D. xanthoma, paratype ♂, NE Pakistan (MWM/ZSM).

FIGURES 33–36. Dolgoma spp., male genitalia. 33, D. reticulata, NE India, Sikkim, slide AV4742 Volynkin; 34, D. xanthocraspis, NE India, Sikkim, slide NHMUK010315254 Volynkin (©NHMUK); 35, D. xanthoma, holotype, N India, 36, D. angulifera, NE India, slide NHMUK010315249 Volynkin (©NHMUK).

FIGURES 49–53. Dolgoma spp., female genitalia. 49, D. reticulata, NE India, slide AV4743 Volynkin; 50, D. xanthocraspis, NE India, slide NHMUK010315255Volynkin (©NHMUK); 51, D. xanthoma, paratype, NE Pakistan, slide ZSM Arct. 2019- 330 Volynkin; 52, D. angulifera, NE India, slide NHMUK010315250Volynkin (©NHMUK); 53, D. recta, N. Thailand, slide AV4737 Volynkin.