Bucsekatha pseudobrevivalva Volynkin & Černý 2025, comb. n.

Bucsekatha pseudobrevivalva (Dubatolov & Bucsek, 2016), comb. n. (Figs 33–35, 76–78, 104, 105) Katha pseudobrevivalva Dubatolov & Bucsek, 2016, Euroasian entomological journal, 15(3): 230, figs 5, 23 (Type locality: “North Vietnam, Thanh Hoa Prov., Thuong Xuan Distr., Xuan Lien NR [National Reserve], ... 19°52'N 105°14.28'E, 130m ”). Material examined. Series of specimens of both sexes from Northeast India (Assam), Laos (Luang Prabang and Champasak Provinces), and Vietnam (Nghe An, Lam Dong and Da Nang Provinces) (MWM / ZSM, CKC and CAV). Diagnosis. The forewing length is 12.0–13.5 mm in males and 12.5–13.5 mm in females. The male genital capsule of B. pseudobrevivalva is very similar to B. chonga sp. n., from which B. pseudobrevivalva differs clearly in the vesica having a markedly shorter distal diverticulum bearing a larger terminal cornutus. Additionally, compared to B. chonga sp. n., B. pseudobrevivalva has a shorter proximal ventral diverticulum displaced more laterally, a markedly shorter medial ventral diverticulum, and a considerably larger lateral diverticulum displaced more dorsally. In the female genitalia of B. pseudobrevivalva, the posterior sclerotised section of the corpus bursae is markedly broader and less curved than in the similar congener, and the appendix bursae is situated ventrally whereas it is situated ventro-laterally on the left side in B. chonga sp. n. Distribution. The species is widespread and found in Northeast India (Assam and Mizoram) (Singh et al. 2024), Laos (Huaphanh, Luang Prabang and Champasak Provinces) (Bucsek 2020), and Vietnam (Thanh Hoa, Nghe An, Gia Lai, Bac Giang, and Da Nang Provinces) (Dubatolov & Bucsek 2016)