Bucsekatha Volynkin & Černý, 2025, gen. n.

Genus Bucsekatha gen. n. https://zoobank.org/ urn:lsid:zoobank.org:act: 60F250C1-9139-423D-8632-4E258E1C0B54 Type species: Bucsekatha sunda sp. n., by present designation. Diagnosis. Species of the new genus (Figs 22–35) are externally very similar to Brunia (Brunikatha) subgen. n. (Figs 5–21) and Sany (Figs 36–38), and identification requires the examination of the genitalia structures. In the male genitalia, Bucsekatha gen. n. (Figs 66–78) is morphologically similar to Sany (Figs 79, 80) sharing the combination of the following features. (1) The scaphium area is setose. (2) The subscaphium area is membranous. (3) The ventral wall of the anellus bears a caulis subdivided into two lobes. (4) The phallus is cylindrical with a ductus ejaculatorius originating laterally on the left side (vs. Brunia and a number of other Lithosiini having a ductus ejaculatorius originating dorsally). (5) The dorsal carina bears a thorn-shaped subapical process directed dorsad. (6) The vesica has a short main chamber, which bears a short but basally broad medial cornutus and has one to three short diverticula proximally and medially, and an elongate, more or less tubular distal diverticulum bearing a cornutus apically or subapically. However, the male genitalia of Bucsekatha gen. n. differ from Sany in the lobes of the caulis being completely fused with anellus and separated from each other (whereas they are ventrally fused with each other and dorsally extended into loose processes in Sany), the broader lobular valva with a convex ventral margin (it is very narrow with almost parallel margins in Sany), the distal section of the editum expanded into a broad setose soft lobe (autapomorphic feature), the reduced, tubercle-like lamella centralis (absent in Sany), the weakly setose apex of the valva (it is covered with robust spine-like setae in Sany), and the broader sacculus with a well-developed distal process (the latter is reduced or completely absent in Sany). The female genitalia ground plan of Bucsekatha gen. n. (Figs 98–105) is very similar to Sany (Fig. 106) but the latter has an appendix bursae situated rather laterally whereas it is situated ventrally or ventro-laterally in Bucsekatha gen. n. Etymology. The genus name is an aggregate of the surname Bucsek and the genus-group name Katha. The new genus is named after Karol Bucsek, renowned expert in the Asian Arctiinae, who greatly contributed to the knowledge of the Lithosiini of the Malay Peninsula, Philippine Archipelago and Laos including the taxonomy of the Brunia generic complex.