Orgichneumon calcatorius (Thunberg, 1822)

Verheyde, Fons, Hoekstra, Paul, Libert, Pierre-Nicolas, Meijer, Hilco, Ketelaere, Augustijn De, Vandaudenard, Thibaud, Belgers, Dick & Brosens, Edwin, 1880, Two hundred and five ichneumonid wasps reported for the first time in Belgium and the Netherlands (Hymenoptera: Ichneumonidae), Belgian Journal of Entomology 122, pp. 1-142 : 75

Orgichneumon calcatorius (Thunberg, 1822)

= syn. Ichneumon desultorius Wesmael 1848 , synonymized by RIEDEL (2012: 1579)

Ichneumon desultorius was recently synonymized with O. calcatorius by Matthias Riedel, who described the species in detail ( RIEDEL, 2012). Important for the small genus Orgichneumon is the width of the thyridia, measuring at least 0.65–1.25× the space between them, this space being densely striated ( VALEMBERG, 2014).

The males can be recognised by habitus. Their metasoma and mesosoma is predominantly black and matt. White (to creamy white) are the frontal orbits, the hind corners of the pronotum, their scutellum (apically) and the subbasal rings on all tibiae ( RIEDEL, 2012). The hosts are several common lepidopterans (see YU et al., 2012).

First report for the Netherlands; unreported in Belgium.

MATERIAL EXAMINED:

THE NETHERLANDS: • 1 ♂; Heeze-Leende , Strabrechtste Heide (NB); 51°23’51”N 5°38’14”E; 5/vi/2012; Telpost Strabrecht leg.; field observation; J. Valemberg det. (ObsID: 72372974) .