Barsine arrigera Volynkin & Černý, 2019

Volynkin, Anton V. & Černý, Karel, 2019, A review of the Barsine phaeodonta (Hampson, 1911) species-group, with descriptions of four new species from Indochina and India (Lepidoptera, Erebidae, Arctiinae), Ecologica Montenegrina 21, pp. 70-79 : 78

Barsine arrigera Volynkin & Černý , sp. nov.

( Figs 13–16 , 21–24 , 27 )

Type material. Holotype ( Figs 13 , 21 ): male, “ Thailand, Changwat Nan, 30 km E of Pua , 1700m, 13.XI.1999, leg. Márton Hreblay ”, slide ZSM Arct. 10/2017 Volynkin (Coll. MWM / ZSM).

Paratypes. THAILAND: 3 males, same data as in the holotype (Coll. MWM / ZSM) ; 1 male, 2 females, N Thailand, Chiang Mai, Fang, Doi Ang Khang , 1425m, 19°54‟11‟‟N, 99°2‟32‟‟E, 5. VI .2006, leg. T. Ihle (Coll. CKC) ; 1 female, same locality and collector, but 23–27.VII.2006 (Coll. CKC) ; 2 males, 1 female, same locality and collector, but 19.X.2007 (Coll. CKC) ; 4 males, 7 females, same locality, but 25– 26. V .2011, leg. K. Černý, slide AV2780 ♂ Volynkin (Coll. CKC) ; 1 male, N Thailand, Chiang Mai, Doi Suthep , 1085m, 18°48‟N, 98°54‟54‟‟E, 8. VI .2005, leg. K. Černý, slide AV2778 Volynkin (Coll. CKC) ; 2 males, N Thailand, Chiang Mai, Doi Inthanon NP, 1416m, 18°30‟59‟‟N, 98°28‟13‟‟E, 6–7. VI .2005, leg. K. Černý (Coll. CKC) ; 1 male, 4 females, N Thailand, Chiang Rai, 1090m, road 1200, 19°18‟39‟‟N, 99°21‟47‟‟E, 28. V .2011, leg. K. Černý (Coll. CKC) ; 2 males, 2 females, N Thailand, Chiang Rai, 1090m, road 1150, km 17 from Wiang Pa Pao, 19°18‟45‟‟N, 99°23‟24‟‟E, 27. V .2011, leg. K. Černý (Coll. CKC) ; 3 males, 2 females, N Thailand, Lampang, Chae Son NP, 1496m, 18°51‟22‟‟N, 99°22‟3‟‟E, 1. VI .2005, leg. K. Černý (Coll. CKC) ; MYANMAR: 1 male, Myanmar (Burma), prov. Mandalay, 3 km SE of Kyause , 220m, 29.X.1999, leg. Márton Hreblay, slide MWM 33581 Volynkin (Coll. MWM / ZSM) .

Diagnosis. Forewing length is 10–10.5 mm in males (wingspan 20–21.5) and 13–13.5 mm in females (wingspan 25.5–26.5 mm). Barsine arrigera ( Figs 13–16 ) has no external differences from its closest relative B. mophi ( Figs 11, 12 ). The male genital capsule of the new species ( Figs 21–24 ) is similar to that of B. mophi ( Fig. 20 ), but can be distinguished by its slightly shorter left distal saccular process with a larger thorn-like tip. The vesica of B. arrigera ( Figs 11, 12 ) differs from that of B. mophi ( Fig. 20 ) by the presence of only bunch of spinules on the tip of the distal diverticulum, whereas B. mophi has the second bunch on its medial ventral diverticulum. The female genitalia of B. arrigera ( Fig. 27 ) differ clearly from those of B. phaeodonta ( Fig. 25 ) and B. joshii ( Fig. 26 ) by their much longer ductus bursae with more weakly sclerotized margins of the ostium bursae, the presence of two heavily sclerotized areas in the posterior section of corpus bursae, and the presence of three weakly dentate signa (absent in B. phaeodonta and B. joshii ).

Remarks. 1. There is some variability in the vesica structure of B. arrigera : in some specimens, the lateral medial diverticulum may bear single spinula ( Fig. 23 ). 2. In the specimen from N Myanmar ( Fig. 24 ), the left distal saccular process is much less curved inwards than those of the Thai specimens dissected ( Figs 21–23 ). However, the vesica structure of the Myanmar specimen is identical to that of the Thai specimens.

Distribution. Central Myanmar (Mandalay State) and North Thailand (Chiang Rai, Chiang Mai, Lampang and Nan provinces).

Etymology. In Latin, „arrigere‟ means „to erect‟. The specific epithet refers to its straight medial line.

Figures

Figures 9–16. Barsine spp.: adults. 9, B. meyi, holotype male, NW Myanmar (ZMB); 10, B. meyi, paratype male, NW Myanmar (ZMB); 11, B. mophi, holotype male, N Laos (MWM/ZSM); 12, B. mophi, paratype male, N Laos (CKC); 13, B. arrigera, holotype male, N Thailand (MWM/ZSM); 14, B. arrigera, paratype male, N Thailand (CKC); 15, B. arrigera, paratype male, C Myanmar (MWM/ZSM); 16, B. arrigera, paratype female, N Thailand (CKC).

Figures 21–24. Barsine arrigera: male genitalia. 21, holotype, N Thailand, slide ZSM Arct. 10/2017 Volynkin; 22, paratype, N Thailand, slide AV2778 Volynkin; 23, paratype, N Thailand, slide AV2779 Volynkin; 24, paratype, C Myanmar, slide MWM 33581 Volynkin.

Figures 25–27. Barsine spp.: male genitalia. 25, B. phaeodonta, Nepal, slide MWM 33520 Volynkin; 26, B. joshii, paratype, S India, slide ZSM Arct. 28/2017 Volynkin; 27, B. arrigera, paratype, N Thailand, slide AV2780 Volynkin.

Figures 17–20. Barsine spp.: male genitalia. 17, B. phaeodonta, Nepal, slide MWM 33534 Volynkin; 18, B. joshii, holotype, NE India, slide MWM 31457 Volynkin; 19, B. meyi, holotype, NW Myanmar, slide AV4239 Volynkin; 20, B. mophi, holotype, N Laos, slide AV2777 Volynkin