Dolgoma lata, Volynkin & Saldaitis, 2023

Volynkin, Anton V. & Saldaitis, Aidas, 2023, Three new species of the genus Dolgoma Moore from Vietnam and China (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 69, pp. 126-134 : 129

Dolgoma lata sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:6EB7FB2F-5D08-45E4-BB76-1BC3D1A6E122

( Figs 3–5 , 15, 16 , 21 )

Type material. Holotype ( Figs 3 , 15 ): male, “ Vietnam (N) | [border of Lai Châu and Lào Cai Provinces] Mts Fan-si-pan, N-side | Chapa , 22°15'N, 103°45'E | 2250m, 26. IV. 1995 | leg. Sinjaev [recte: Sinyaev] & loc. coll. | Museum Witt” / “Slide | ZSM Arct. | 2021- 413♂ | A. Volynkin ” ( MWM / ZSM).

Paratypes. VIETNAM: 12 males, 17 females, the same data as in the holotype, gen. prep. Nos. : ZSM Arct. 2021 - 411♂, ZSM Arct. 2021 - 412♀, ZSM Arct. 2021 - 414♀ (prepared by Volynkin); 2 males, 1 female, [border of Lai Châu and Lào Cai Provinces] 1600m, Mt. Fan-si-pan (north), Cha-pa , primary forest, 22°17'N 103°44'E, 25–30.III.1995, V. Sinyaev & A. Schintlmeister leg. , gen. prep. No. : ZSM Arct. 2021 - 432♂ (prepared by Volynkin ) (all in MWM / ZSM) .

Diagnosis. The forewing length is 14.0– 15.5 mm in males and 15.0– 15.5 mm in females. Dolgoma lata sp. n. is very similar to D. nujianga sp. n. and differs only in the slightly more pinkish forewing ground colour. The reliable identification requires the examination of the genitalia structures. In the male genital capsule, the new species differs from the similar congener in the distally broader uncus, and the shorter and broader valva. The phallus of D. lata sp. n. is considerably longer and broader than in D. nujianga sp. n. Compared to D. nujianga sp. n., the vesica of the new species is markedly broader and has longer and broader diverticula. In the female genitalia, D. lata sp. n. is distinguished from D. nujianga sp. n. by the shorter apophysis anterioris, the noticeably shorter ductus bursae, the more weakly sclerotised lateral protrusion of the posterior section of the corpus bursae, the broader anterior section of the corpus bursae, and the somewhat longer appendix bursae with a larger diverticulum.

Distribution. Northern Vietnam (border of Lai Châu and Lào Cai Provinces).

Etymology. The specific epithet is derived from the Latin ‘lata’ meaning ‘broad’ and refers to the broad forewing of the new species.

Figures

Figures 1–8. Dolgoma spp.: adults. Depositories of the specimens: 1 in WIGJ (ex AFM); 2–5, 7 and 8 in MWM/ZSM; 6 in NHMUK (©The Trustees of NHMUK).

Figures 13–16. Dolgoma spp.: male genitalia. Depositories of the specimens dissected: 13 in WIGJ (ex AFM); 14–16 in MWM/ZSM.

Figures 20–23. Dolgoma spp.: female (20, 21, and 23) and male (22) genitalia. The specimens dissected are deposited in MWM/ZSM