Rhytidaphora Reshchikov & Quicke, 2022

Reshchikov, Alexey, Quicke, Donald L. J. & Butcher, Buntika A., 2022, A remarkable new genus and species of Euryproctini (Hymenoptera: Ichneumonidae, Ctenopelmatinae) from Thailand, European Journal of Taxonomy 834 (1), pp. 102-116 : 106-107

Rhytidaphora Reshchikov & Quicke gen. nov.

urn:lsid:zoobank.org:act:718AE550-9DB0-4AB6-83ED-95549932F36B

Type species

Rhytidaphora thailandica Reshchikov & Quicke gen. et sp. nov. by present designation.

Diagnosis

Rhytidaphora gen. nov. can be distinguished from other genera of Euryproctini by the following combination of character states: lower mandibular tooth much longer than upper ( Fig. 1B ); occipital carina broadly incomplete dorsally, joining hypostomal carina shortly before base of mandible; occiput with distinct concavity; fore wing without areolet ( Fig. 2A); tarsal claws distinctly pectinate ( Fig. 2B); T1 dorsal carinae well-developed, continuing as dorsal carinae of T2 ( Fig. 2F); S1 very short (0.3 times as long as T1); T2 and T3 immovably fused ( Fig. 2D); T1‒5 with deep basal and subapical transverse striate impressions ( Fig. 2D, F); ovipositor rather short, straight, with subapical, dorsal notch ( Fig. 2D).

Etymology

The generic name Rhytidaphora derives from Greek “ρυτίδα” – “wrinkle” and “φέρω” – “bear”, referring to the sculpture of the metasoma. The gender is feminine.

Description

MEASUREMENTS. Fore wing length 6.0 mm.

HEAD. Clypeus flat in lateral view ( Fig. 2E), its lower margin blunt in its middle and slightly sharp laterally, bulging apically ( Fig. 1B ). Face rather sparsely setose ( Figs 1B , 2E). Anterior tentorial pit rather large ( Fig. 1B ). Eyes bare ( Fig. 2C). Lower mandibular tooth much longer than upper ( Fig. 1B ). Occipital carina broadly incomplete dorsally, joining hypostomal carina shortly before base of mandible. Occiput with distinct concavity.

MESOSOMA. Epomia absent. Notauli shallow and indistinct ( Fig. 2C). Mesopleuron sparsely setose, not punctate ( Fig. 2C). Epicnemial carina joining anterior margin of mesopleuron ( Fig. 2C). Propodeum in lateral profile convexly rounded ( Fig. 2E), with carinae complete except for area apicalis, which is absent (fused with area superomedia) ( Fig. 1C ). Fore wing without areolet ( Fig. 2A). Pterostigma receiving vein Rs+2r at its basal 0.35. Vein 2m-cu with a single bulla ( Fig. 2A). Hind wing with cu-a receiving Cu1 well below middle. Tarsal claws distinctly pectinate ( Fig. 2A). Fore tibia with apical tooth ( Fig. 2G–H).

METASOMA. Without obvious punctures but densely finely setose ( Fig. 2D, F). T1 as long as broad with strong dorsal longitudinal carina continuing in dorsal carinae of T2 ( Fig. 2F). Glymma absent ( Fig. 2D). S1 rather short, 0.3 times as long as T1. T2 and T3 immovably fused ( Fig. 2D). T1‒5 with distinct basal and subapical transverse impressions distinctly striate. Ovipositor very short, straight, with a long, shallow, subapical dorsal notch ( Fig. 2D).

Species included

The genus is described as monotypic.

Figures

Fig. 1. Rhytidaphora thailandica Reshchikov & Quicke gen. et sp. nov., holotype, ♀ (CUMZ). A. Habitus, in lateral view. B. Face C. Propodeum.