Bucsekatha brevivalva ( Holloway, 2001 ), 2025

Volynkin, Anton V. & Černý, Karel, 2025, On the taxonomy of the Brunia Moore generic complex with the description of a new genus, a new subgenus and four new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini: Lithosiina), Ecologica Montenegrina 87, pp. 46-76 : 52

Bucsekatha brevivalva ( Holloway, 2001) , comb. n.

( Figs 22, 23 , 66 , 98 )

“ Eilema ” brevivalva Holloway, 2001 , Moths of Borneo, 7: 321, pl. 3, figs 23–24 (adults), gen. figs 87, 106 (Type locality: “ Sarawak: Gunong Mulu Nat. Park , …, Mulu, 1000m, lower montane f.[orest]”).

Type material examined. Holotype: male, “ Sarawak: Gunong | Mulu Nat. Pak | R.G.S. Exped. 1977– 8 | J.D. Holloway et al. | B.M. 1978–206” / “Site 15. February | Camp 2.5, Mulu | 1000m. 413461 | Lower l. montane f. | MV – understorey.” / “+3” / “ Holotype | “ Eilema ” | brevivalva | Holloway” / round label with red margin “Type” / blue label “ Arctiidae | genitalia slide | No. 2639 ♂ ” / “Figured specimen | Moths of Borneo | Part 7” / QR-code label with unique ID “NHMUK010401787” ( NHMUK).

Additional material examined. INDONESIA: 4 males, 1 female, Borneo , Kalimantan Selatan [Prov.], 1100m, 30 km E of Kandangan, rainforest, 15 km NE of Loksado, 2°52'S 115°38'E, I.1998, Jakl leg., gen. slide Nos: ZSM Arct. 2021 - 541♂, 2021- 542♀ ( MWM / ZSM) .

Diagnosis. The forewing length is 12.0 mm in males and 13.5 mm in females. The male genital capsule of B. brevivalva differs clearly from other congeners in the reduced, very short dorsal (valvular) section of the valva and the markedly longer distal saccular process. In the female genitalia, the species is distinct by the narrow and anteriorly tapered posterior sclerotised section of the corpus bursae.

Distribution. Endemic to the island of Borneo ( Holloway 2001). The present report of the species from Kalimantan Selatan Province of Indonesia is first for the country.

Figures

Figures 19–35. Adults of Brunia (19–21) and Bucsekatha gen. n. (22–35) spp. Depositories of the specimens: 19– 21, 25, 27, 31 and 32 in CKC; 22–24, 26, 28–30 and 33 in MWM/ZSM (24 and 30: ex CKC); 34 and 35 in CAV.

Figures 66–69. Male genitalia of Bucsekatha gen. n. spp. Depositories of the specimens dissected: 66–68 in MWM/ZSM (67: ex CKC); 69 in CKC.

Figures 95–100. Female genitalia of Brunia (95–97) and Bucsekatha gen. n. (98–100) spp. Depositories of the specimens dissected: 95, 97, 99 and 100 in CKC; 96 and 98 in MWM/ZSM.