Crusopimpla rettigi, Klopfstein, 2022

Klopfstein, Seraina, 2022, High diversity of pimpline parasitoid wasps (Hymenoptera, Ichneumonidae, Pimplinae) from the lowermost Eocene Fur Formation (Denmark), Geodiversitas 44 (23), pp. 645-664 : 653

Crusopimpla rettigi n. sp.

( Fig. 5 )

urn:lsid:zoobank.org:act:CEF582AD-D348-4DF2-9C66-05C6E3E80885

TYPE MATERIAL. — Holotype female: FUR-11209 (part and counterpart; leg. E. Rettig) . Paratypes (both females): FUR-11219 , 13074 .

ETYMOLOGY. — This species is dedicated to Mr Erwin Rettig, who collected the three specimens included in the type series.

TYPE HORIZON AND LOCALITY. — Denmark, Jutland, Limfjord region, MorsØ Kommune , Klinten ved Klitgård (holotype and FUR-11219), Svalklit (FUR-13074). Cement stone.

DIAGNOSIS. — Taxonomic placement: this species is very similar to Crusopimpla violina – see reasoning for subfamily and genus placement there.

Species diagnosis: together with Crusopimpla violina , C. rettigi can be distinguished from other species of the genus by their colour pattern. From C. violina , it can be distinguished by its much stouter tergites and the entirely orange antennae, while they are at least partly dark brown in the other species.

DESCRIPTION

Preservation

Holotype and paratype FUR- 11219 in dorsal, paratype FUR- 13074 in lateral view.Head in rather well preserved,in FUR-13074 including mandibles.Antennae nearly complete in holotype, only base preserved in paratypes. Mesosoma rather well preserved, including part of propodeal carination; fore wings in holotype complete, in paratypes partial, hind wings indicated but with carination only weakly preserved, a bit better in FUR-11219. Metasoma in holotype complete, in FUR-11219 missing most of ovipositor and in FUR-13074 from T7 onwards.

Body 8.6-10.5 (10.5) mm. Head and mesosoma black or dark brown, wing venation dark brown in forewing, with light base of pterostigma, and light brownish in hind wings. Antennae entirely orange (holotype). T1 dark at base, orange at apex, remaining tergites entirely orange, legs orange; ovipositor sheaths dark brown.

Head. Transverse, wider than long; mandible with two teeth (FUR-13074), the lower a bit shorter; antennae with maybe 24-30 segments, median flagellomeres only slightly longer than wide, apical ones quadrate.

Mesosoma. Rather stout; notauli only visible anteriorly, rest unclear; propodeum distinctly shortened, with some faint traces of carinae. Fore wing 6.1-8.25 (8.25) mm; areolet closed, quadrate, with uneven sides, 4-M very short, 2r-m about as long as 3r-m; 2m-cu with two bullae, bent outwards; pterostigma 2.4-2.6 × longer than wide; 1cu-a meeting M + Cu a little distad from 1-M; 3-Cu clearly longer than 2cu-a; radial cell 2.5-3.0 × longer than wide. Hind wing with 1-Rs about 1.9 × longer than 1rs-m, 1-Cu about 1.1 × as long as cu-a. Hind legs not well preserved, but rather stout, hind femur maybe 3.0-3.2 × longer than wide.

Metasoma. With T1 about 0.7-0.85 (0.85) × longer than wide, with strong median longitudinal carina converging on basal half, then parallel and diverging towards the posterior end; T2 0.4-0.45 (0.45) × as long as wide. Ovipositor sheaths 0.30 × as long as fore wing, rather robust.

Figures

FIG. 5. — Holotype of Crusopimpla rettigi n. sp. (FUR-11209), photograph (A) and interpretative drawing (B), where dotted lines represent uncertain and/or interpolated interpretations. Scale bar: 2 mm.