Collitoptyx (Confusoptyx), Volynkin & Černý, 2024

Subgenus Confusoptyx subgen. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:2B56533C-9126-4D6F-A9E3-7FC743B82FDD

Type species: Collitoptyx (Confusoptyx) duplex sp. n., by present designation.

Diagnosis. In the male genitalia, the new subgenus ( Figs 44, 45 View Figures 42–45 ) differs from Collitoptyx s. str. ( Figs 34–41 View Figures 34–37 View Figures 38–41 ) and Collitoptyx (Insolitoptyx) subgen. n. ( Figs 42, 43 View Figures 42–45 ) in the following characters. (1) The tegumen has short lobe-like subuncal protrusions. (2) The vinculum is markedly shorter and with thin arms and a ‘bridge’. (3) The juxta is broader, which makes the valvae opening broader. (4) The anterior (cranial) wall of the juxtal fold is membranous with two elliptical sclerotised plates at the base of the anellus. (5) The costa is very short, occupying ca. 1/4 of the dorsal margin of the valva (vs. ca. 1/ 3 in Collitoptyx (Insolitoptyx) subgen. n. and 1/ 2 in the nominate subgenus), while the valvula is long and similar to Collitoptyx (Insolitoptyx) subgen. n. but proximally narrower. (6) The conjuga is broader, longer and trapezoidal (whereas it is triangular in Collitoptyx s. str. and shortly rectangular in Collitoptyx (Insolitoptyx) subgen. n.) and articulated with its counterpart (whereas in other subgenera, the conjugae are separated from each other by a membrane of diaphragm). (7) The lamella centralis is fold-like whereas it is flat in the other subgenera. (8) The sacculus is distally broader than in Collitoptyx (Insolitoptyx) subgen. n. and narrower than in Collitoptyx (Collitoptyx) and lacking the dorsal process. (9) The distal saccular process is unilobate, long and hook-like upcurved whereas it is bilobate in Collitoptyx (Insolitoptyx) subgen. n. and short, knife-shaped and directed distally in Collitoptyx (Collitoptyx) . (10) The anellus is membranous. (11) In the vesica, the main diverticulum bears a cornutus dorsally and has one or two small semiglobular latero-ventral subdiverticula whereas in Collitoptyx (Collitoptyx) , it has one broad protrusion-like subdiverticulum and bears a cornutus distally, while in Collitoptyx (Insolitoptyx) subgen. n., the cornutus is situated on one of the lobes of the distal subdiverticulum. In the female genitalia, Collitoptyx (Confusoptyx) subgen. n. ( Figs 59, 60 View Figures 59–64 ) can easily be distinguished from the two other subgenera ( Figs 52–58 View Figures 52–58 ) by the reduced ductus bursae, and the narrow and tubular posterior section of the corpus bursae bearing a sclerotised plate dorsally and a longitudinal fold-like sclerotised protrusion ventrally. Additionally, the 7 th abdominal sternum of the new subgenus has lateral gelatinous pockets receiving the hook-shaped distal saccular processes of male during copulation.

Etymology. The subgenus name is an aggregate of the Latin adjective ‘confusus’ meaning ‘messy, confused’ and the genus- group name Thysanoptyx . The name refers to the confusion of the type species of the subgenus with C. sordida (see Volynkin & Dubatolov 2017). Gender is feminine.