Heterischnus debilis (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 : 79

Heterischnus debilis (Gravenhorst, 1829)

Heterischnus spp. are quite straightforward to recognise in Phaeogenini . Their mandibles have only one tooth and their clypeus is separated from the face by a deep groove. Furthermore, their flagellomeres are slender and long, the notauli deeply indented and long and their scutellum is high and arched ( SELFA & DILLER, 1994).

H. debilis is a predominantly black species. Its frontal orbits, scutellum, tegulae and pronotal collar are whitish-yellow, however, and the legs are orange. This species seems to be rare, although difficulties in determination could be present since it is missing from recent literature. According to YU et al. (2012) our finding constitutes the first confirmed rearing record with Amblyptilia acanthadactyla (Hübner, 1813) ( Lepidoptera : Pterophoridae ) as a host.

First report for Belgium; unreported in the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Erpe-Mere (OVL); 50°56’36”N 3°58’16”E; 26/vii/2014; G. Van Heghe leg.; reared ex Amblyptilia acanthadactyla (Hübner, 1813) ; E. Diller det. (ObsID: 86740373) .