Oligomonoctenus, NEL & WEI & NIU & GARROUSTE & JOUAULT, 2023

NEL, ANDRÉ, WEI, MEI-CAI, NIU, GENG-YUN, GARROUSTE, ROMAIN & JOUAULT, CORENTIN, 2023, Description of a new fossil genus of conifer sawfly (Hymenoptera: Diprionidae) revealed by UV light, Palaeoentomology 6 (3), pp. 313-320 : 314

Genus Oligomonoctenus gen. nov.

urn:lsid:zoobank.org:act:81101A43-F87D-483B-90A2-518D4D4802CA

Type species. Oligomonoctenus neytiriae sp. nov.

Etymology. Named after the Oligocene age of the type species and the genus Monoctenus Dahlbom, 1835 . Gender masculine.

Diagnosis. Lateral ocelli apparently as far apart as each is from an eye margin; 22 antennomeres, all short, shorter than wide, except for scape and pedicel that are slightly longer than wide, without visible serration; clypeus very short and transverse with distinct supraclypeal furrow; anterior corner of mesoscutellum angular, slightly obtuse, triangularly protruding; mesoscutellar appendage narrow but distinct; cenchri very narrow and transversely extended, distance between them as long as their respective length, and length about half as long as their respective width; vein M nearly straight; cell 1R1 large, well separated from cell Rs; no crossvein Sc1; crossvein 2r-rs absent; vein M meeting vein R at point where vein Rs+M separates from vein R; crossvein 1cu-a oblique, meeting cell 1M beyond middle; proximal part of vein 2A+3A meeting with vein 1A, basal anal cell closed.