Exeristes ruficollis (Gravenhorst, 1829)

Varga, O., 2017, A Review Of The Genus Exeristes (Hymenoptera, Ichneumonidae, Pimplinae) From Carpathians, With An Illustrated Key To Western Palearctic Species, Vestnik Zoologii 51 (1), pp. 9-14 : 13

Exeristes ruficollis (Gravenhorst, 1829) ( figs 2 , 4, 5, 7–9; 3, 3)

Exeristes denticulator Aubert, 1983 syn. n.

Material. Type material. Exeristes ruficollis : lectotype ♀ ( MNHHWU); E. denticulator : holotype ♀ ( CMZL). No material examined from Carpathians. Additional material. 1 Ơ and 6 ♀ ( ZSSM) .

D i a g n o s i s. The female is characterized by the hind coxa red, all trochanters yellowishred; fore tarsal claws simple basally (without lobes); mesosoma partly red; ovipositor tip subapically simple (without tubercle) ( fig. 2 , 4, 5); and metasomal tergites subquadrate to weakly transverse ( fig. 2 , 9). The male generally resembles female and has red hind coxa, yellow trochanters, almost entirely black scape and pedicel ( fig. 3 , 1 ).

D i s t r i b u t i o n. Palaearctic Region ( Yu et al., 2012).

Remarks. Exeristes denticulator holotype female generally resembles E. ruficollis , but differs in the coloration of the hind tibia ( fig. 2 , 7, 8), which is however can be a variable character (G. Broad, pers. com.).

The author is deeply grateful to the museum collections curators, Marek Wanat (MNHHWU) and Anne Freitag (CMZL) for providing materials, Stefan Schmidt (ZSSM), Ovidiu Popovici, Lucian Fusu, and Mircea Mitroiu (UAIC) for access to the collections and photolaboratories of the respective institutions. The author’s visit to Germany was funded by the Ernst Mayr Travel Grant and DAAD scholarship, and visit to Romania by the Erasmus Mundus Scholarship. The author’s field work in Carpathians was funded by The Rufford Foundation.

Figures

Fig. 2. Exeristes spp., female. 1 — E. roborator, ovipositor tip (lateral view); 2 — E. longiseta, ovipositor tip (lateral view); 3 — E. arundinis, ovipositor tip (lateral view); 4 — E. denticulator, holotype, ovipositor tip (lateral view); 5 — E. ruficollis, lectotype, ovipositor tip (lateral view); 6 — E. arundinis, fore tarsal claw (lateral view); 7 — E. ruficollis, lectotype, hind femur and tibia (lateral view); 8 — E. denticulator, holotype, hind tibia and tarsus (lateral view); 9 — E. denticulator, holotype, propodeum and tergites I–II of metasoma (dorsal view); 10 — E. roborator, propodeum and tergites I–II of metasoma (dorsal view).

Fig. 3. Exeristes spp., male. 1 — E. arundinis, habitus (lateral view); 2 — E. longiseta, habitus (lateral view); 3 — E. ruficollis, head and mesosoma (lateral view); 4 — E. roborator, clypeus (frontal view); 5 — E. arundinis, hind tarsus (lateral view); 6 — E. roborator, hind tarsus (lateral view).

Fig. 1. The Carpathian Exeristes spp. distribution map. Yellow circle — E. roborator; red circle — E. longiseta; green circle — E. arundinis.