Teulisna (Poikilothosia) bucseki Volynkin, Cerny, sp. n.

Teulisna (Poikilothosia) bucseki Volynkin, Černý & Huang, sp. n. https://zoobank.org/ urn:lsid:zoobank.org:act: DF098D3D-69BF-4029-84C3-816427241D70 (Figs 46–48, 119, 120, 164) Type material. Holotype (Figs 46, 119): male, “N-Vietnam [Lao Cai Prov.] 1600m | Mt. Fan-si-pan(Nord) | Cha-pa, Primärurwald [primary jungle] | 22.17''N 103.44''E [22°17'N 103°44'E] | 20.– 30.IV.1995 | leg. V. Sinjaev [recte: Sinyaev] & | Einheim. Sammler [local collector] | Museum Witt” / “Slide | ZSM Arct. | 2021- 464♂ | A. Volynkin ” (MWM / ZSM). Paratypes. VIETNAM: 1 male, 3 females, same data as in holotype, gen. slide Nos: ZSM Arct. 2021 - 468♂, 2021- 471♀, 2021- 472♀ (MWM / ZSM); 1 male, [Lao Cai Prov.] 16[00]– 1800m, Mt. Fan-si-pan (West), Cha-pa, Sekund. -Wald [secondary forest], 22°20'N 103°40'E, xii.1994, Sinyaev & Einh. Slr. [local collector] leg., gen. slide No.: ZSM Arct. 2021 - 476♂ (MWM / ZSM); 1 male, 1 female, [Lao Cai Prov.] Fansipan near Chapa, 16[00]– 1800m, 22°20'N 103°40'E, v.1995, secondary forest, native collectors [leg.] (MfN). Diagnosis. The forewing length is 13.0–14.0 mm in males and 15.0–16.0 mm in females. Teulisna bucseki sp. n. is morphologically most similar to the sympatric T. fimbriata, from which it differs externally in the more prominent costal protrusion of the forewing. The male genital capsules of the two species are very similar. The phallus of T. bucseki sp. n. is somewhat more distally dilated than in T. fimbriata. The main differences between the species are found in their vesica structures. Compared to T. fimbriata, T. bucseki sp. n. has a large saccate and heavily scobinate subbasal diverticulum (it is very short and finely scobinate in the congener), and a smaller proximal diverticulum bearing a smaller cornutus. The female genitalia of the two species are very similar but in T. bucseki sp. n., the lateral right sclerotised protrusion is broader than in T. fimbriata and has a smaller sclerotised pocket, and the appendix bursae is markedly larger. Distribution. The new species is known from Northern Vietnam (Lao Cai Province). Etymology. The new species is named after Karol Bucsek, renowned expert in the Asian Arctiinae, who greatly contributed to the knowledge of the Lithosiini of Southeast Asia. The name is a noun in the genitive case.