Barsine wernerthomasi Volynkin, 2018

Volynkin, A. V., 2018, Four new species of the genus Barsine Walker, 1854 (Lepidoptera: Erebidae, Arctiinae) from Oriental Region, Far Eastern Entomologist 358, pp. 1-18 : 7-13

Barsine wernerthomasi Volynkin , sp. n.

Figs 9–11 , 25, 26 , 37

TYPE MATERIAL. Holotype ( Figs 9 , 25 ) – ♂, India, Sikkim, Namchi , 1000

m, 2.VII 1986, leg. W. Thomas, slide MWM 31791 Volynkin (Coll. MWM / ZSM).

Paratypes: same data as in the holotype, 2 ♀, slide MWM 31792 (♀) Volynkin (Coll.

7

MWM / ZSM); Gopaldhara, June 1918 (Stevens) / Rothschild bequest 1939.-I., 1 ♂ ,

1 ♀, (Coll. NHMUK) ; Sikkim (H. Stevens) / Rothschild bequest 1939.-I ., 1 ♀,

(Coll. NHMUK); Sikkim (H. Stevens), 1 ♂, 1 ♀ , slides AV1916 ♂, AV1917 ♀

Volynkin (Coll. ZFMK); East Nepal, Kanchenjunga Himal, Khambachen, 4150 m ,

28. VI .1998 , leg. Márton Hreblay & Balázs Benedek, 6 ♂, 1 ♀, slide MWM 33576

(♂) Volynkin (Coll. MWM / ZSM).

– B. hypoprepioides, ♂, Malaysia , Borneo (© NHMUK); 18 – B. syntypica, ♂, Indonesia ,

Sumatra ( CKC); 19 – B. peraffinis , ♂, N Vietnam ( CKC) ; 20 – B. collina , ♂, S Vietnam

22 – B. garo sp. n., holotype, NE India; 23 – B. complicata, Malaysia, Cameron Highlands ;

24 – B. cuneonotatus, North-East Thailand.

DIAGNOSIS. B. wernerthomasi belongs to the Brasine prominens speciesgroup described by Volynkin & Černý (2016) and is a closest relative of B.

prominens (Moore, 1878) distributed in Himalaya ( India and Nepal). B.

wernerthomasi ( Figs. 9–11 ) is very similar externally to B. prominens ( Figs 12–14 ),

but differs by its much larger size and shorter blackish marginal stripes on veins of hindwings. The male genitalia of the new species ( Figs 25, 26 ) differ from those of

B. prominens ( Fig. 27 ) by the distally broader valve with slightly longer distal section between apical costal process and valve apex, slightly weaker medial costal process, thinner and apically pointed distal saccular process, presence of very robust granulation in the distal diverticulum of vesica, and weaker granulation of lateral diverticula of vesica, whereas in B. prominens the valve is distally narrower and has slightly shorter distal section, the medial costal is process more robust, the distal saccular process is broader and apically tapered, the large apical diverticulum of vesica has a cluster of short, but robust cornuti, and the granulation of lateral diverticula of vesica is stronger. In the female genitalia, B. wernerthomasi ( Fig. 37 )

differs from B. prominens ( Fig. 38 ) by the much larger and heavily sclerotized postero-lateral sclerotized field of corpus bursae, and the much weaker spinulose scobination of corpus bursae, whereas in B. prominens the postero-lateral sclerotized field of corpus bursae is much smaller and weakly sclerotized, and the spinulose scobination is much more robust.

DESCRIPTION. Adult ( Figs 9–11 ). Forewing length 15–17 mm, in males and

17–18 mm in females. Male antennae ciliate, female antennae filiform. Body yellow, thorax with two large lateral black spots. Forewing ground color pale yellow; pattern black, consists of four large subbasal spots, transverse lines, and lengthwise strokes on veins in outer part of forewing; antemedial line angled in the cell, interrupted, consists of three strips; medial line slightly curved and wavy;

discal spot large, reniform; postmedial line strongly curved and irregularly dentate opposite the cell; cilia pale yellow. Hindwing pale yellow, lighter than forewing,

with diffuse, thin, grayish, S-like curved medial band, thin, slightly wavy, diffuse,

grayish submarginal line, and black stripes on veins between the submarginal line and wing margin; cilia pale yellow.

Male genitalia ( Figs 25, 26 ). Uncus long, narrow, laterally flattened, curved,

apically pointed; tuba analis narrow, scaphium very thin and weakly sclerotized;

subscaphium presented as setose field; tegumen medium short and broad; manica with two sclerotized bands; juxta broad, shield-like; vinculum short, U-like. Valve narrow, distally broadened; costa moderately sclerotized, with large, narrowly trigonal medial process and thin, trigonal distal process directed dorsally; medial membranous lobe of valve short and broad; sacculus narrow, setose; distal saccular process curved dorsally, apically pointed. Aedeagus long and narrow; vesica broad,

globular, with two small lateral diverticula with weak granulation, and large apical diverticulum with broad field of very robust granulation.

Female genitalia ( Fig. 37 ). Ovipositor narrow, conical; papillae anales elongated,

apically rounded; apophyses anteriores and posteriores moderately long, thin, equal in length; antrum broad, with membranous ventral margin and heavily sclerotized,

horseshoe-shaped postvaginal plate; anterior section of ductus bursae short, narrow,

29 – B. peraffinis, SE China, Guandong; 30 – B. collina , S Vietnam.

membranous; corpus bursae broad, sack-like, with broad and heavily sclerotized postero-lateral plate, weak spinulose scobination which is much weaker anteriorly,

and heart-like dentate sigum in anterior section; appendix bursae very short and broad, situated postero-laterally, with very weak spinulose scobination.

DISTRIBUTION. B. wernerthomasi is known from northeastern India (north of

West Bengal, Sikkim) and eastern Nepal.

ETYMOLOGY. The species name is dedicated to Dr Werner Thomas, a famous researcher of Arctiinae of India, a collector of the part of the type series.

REMARK. The female genitalia of B. wernerthomasi were erroneously illustrated by Volynkin & Černý (2016b) as B. prominens .

(©NHMUK); 32 – B. syntypica, Borneo, Sarawak (©NHMUK).

Figures

Figs. 9–14. Barsine spp., adults. 9–11 – B. wernerthomasi sp. n.: 9 – holotype ♂, NE India, Darjeeling (MWM/ZSM); 10 – paratype ♂, eastern Nepal (MWM/ZSM); 11 – para-

Figs. 25–27. Barsine spp., male genitalia. 25, 26 – B. wernerthomasi sp. n.: 25 – holotype, NE India, Darjeeling; 26 – paratype, eastern Nepal; 27 – B. prominens, eastern Nepal.

Figs. 33–40. Barsine spp., female genitalia. 33 – B. midzhan sp. n., paratype, N Myanmar;