Barsine bucseki Volynkin & Černý, 2018

Volynkin, Anton V., Černý, Karel & Huang, Si-Yao, 2019, A review of the Barsine hypoprepioides (Walker, 1862) species-group, with descriptions of fifteen new species and a new subspecies (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4618 (1), pp. 1-82 : 8-9

Barsine bucseki Volynkin & Černý, 2018

( Figs 13–15 , 155 , 225 )

Barsine bucseki Volynkin & Černý, 2018 , Zootaxa, 4402 (2): 346, figs 17–20, 37, 38, 45 (Type locality: “SW Thailand, prov. Ranong, Ranong, 380 m ”).

Type material examined. Holotype ( Figs. 13 , 155 ): ♂, SW Thailand, prov. Ranong, Ranong, 380 m, 10°01’32’’N 98°40’13’’ E, 3–4.XII.2005, leg. K. Černý, slide AV2759 ♂ Volynkin (Coll. MWM/ ZSM, ex coll. CKC) ; Paratypes: 9 ♂, 18 ♀ from S Thailand and W Malaysia listed by Volynkin & Černý (2018b) (Colls MWM/ ZSM, CKC) .

Diagnosis. Forewing length is 9–10 mm in males and 10–11 mm in females. Externally, B. bucseki is similar to B. pluma due to its interrupted medial line, but differs by the slightly smaller size. In the male genitalia, B. bucseki differs from B. pluma by its broader medial costal process, more robust distal costal process, larger and trigonal basal lobe of sacculus (in B. pluma , that is narrower, with more smoothly curved dorsal margin), shorter distal sac- cular process with tapered tip (that is significantly longer, slightly curved distally and pointed apically in B. pluma ), much larger basal diverticulum of vesica with stronger granulation, larger subapical diverticulum, and a field of scobination in the largest medial diverticulum (that has a field of small, but robust cornuti in B. pluma ). In the female genitalia, B. bucseki differs clearly from B. pluma by its much narrower, more or less V-like postvaginal plate (in B. pluma , that is much broader, T-shaped with lateral lobes curved posteriorly), V-shaped antrum with sclerotized margins (that is shorter and evenly membranous in B. pluma ), longer ductus bursae with ribbed sclerotization anteriorly (that is shorter and evenly membranous in B. pluma ), and much larger appendix bursae.

Distribution. Malay Peninsula: Malaysia and South Thailand (Chumphon and Ranong) ( Volynkin & Černý 2018b).

Figures

FIGURES 4–18. Barsine spp., adults. 4, B. zebrina, holotype ♀, India (©NHMUK); 5, ditto, ♂, N Thailand (CKC); 6, ditto, ♀, W Thailand (CKC); 7, B. subzebrina, holotype ♂, Nepal (MWM/ZSM); 8, ditto, paratype ♂, N Myanmar (MWM/ZSM); 9, ditto, paratype ♀, Nepal (MWM/ZSM); 10, B. pluma, paratype ♂, W Thailand (CKC); 11, ditto, holotype ♀, W Thailand (©NHMUK); 12, ditto, paratype ♀, W Thailand (CKC); 13, B. bucseki, holotype ♂, SW Thailand (MWM/ZSM); 14, ditto, paratype ♀, SW Thailand (CKC); 15, ditto, paratype ♀, W Malaysia (MWM/ZSM); 16, B. navneetsinghi, holotype ♂, NE India (MWM/ZSM); 17, ditto, paratype ♂, N Myanmar (MWM/ZSM); 18, ditto, paratype ♀, N Myanmar (MWM/ZSM).

FIGURES 152–155. Barsine spp., male genitalia. 152, B. zebrina, N Thailand, slide AV2755 Volynkin; 153, B. subzebrina, holotype, Nepal, slide MWM 33545 Volynkin; 154, B. pluma, paratype, W Thailand, slide AV2745 Volynkin; 155, B. bucseki, holotype, SW Thailand, slide AV2759 Volynkin.

FIGURES 222–227. Barsine spp., female genitalia. 222, B. zebrina, N Thailand, slide AV2756 Volynkin; 223, B. subzebrina, paratype, Nepal, slide MWM 31694 Volynkin; 224, B. pluma, paratype, W Thailand, slide AV2747 Volynkin; 225, B. bucseki, paratype, SW Thailand, slide AV2761 Volynkin; 226, B. navneetsinghi, paratype, N Myanmar, slide ZSM Arct. 150/2017 Volynkin; 227, B. radians, Nepal, slide MWM 31786 Volynkin.