Exenterus tricolor Roman, 1913

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 : 127

Exenterus tricolor Roman, 1913

In contrast to Cteniscus spp. (see above) the notaulus is absent, the abdominal tergites are coarse and strongly punctured and the area superomedia is wider than long ( TOWNES, 1969).

Exenterus tricolor has a distinctive colour-pattern on its metasoma. The apical tergites are red brownish laterally. The clypeus is slightly protruding with a small impression at the lower margin. Like other species in the genus, this is a parasitoid of sawflies associated with conifers, i.e. Diprionidae ( KASPARYAN & TOLKANITZ, 1981) .

First report for the Netherlands; unreported in Belgium.

MATERIAL EXAMINED:

THE NETHERLANDS: • 1 ♂; Olterterp (FR); 53°04’11”N 6°06’20”E; 12/viii/2020; H. Meijer leg.; coll. HM; light trap; H. Meijer det.