Bathythrix spheginus (Gravenhorst, 1829)

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 : 89

Bathythrix spheginus (Gravenhorst, 1829)

Several males of B. spheginus were caught with pitfall traps. The species can be recognised by its nervellus (intercepted), areolet (open) and first tergites (distinctly striate). Furthermore, the head is rather strongly narrowed behind the eyes. It is a known parasitoid of several common cephid wasps (Symphyta: Cephidae ) and a facultative hyperparasitoid of Collyriinae (Parasitica: Ichneumonidae ) ( SAWONIEWICZ, 1980).

First report for Belgium; unreported in the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♂; Sint-Andries, Chartreuzinnenheide - Laag (WVL); 16/v/2014; W. Dekoninck et al. (KBIN) leg.; coll. KBIN/RBINS (project Bruges heathlands); pitfall trap (2-16); F. Verheyde det. • 7 ♂♂; Sint-Andries, Chartreuzinnenheide (WVL); V–VII.2016; W. Dekoninck et al. (KBIN) leg.; coll. KBIN/RBINS (project Bruges heathlands); pitfall trap; F. Verheyde & A. Humala det.