Lissonota admontensis Strobl, 1902

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 : 30-31

Lissonota admontensis Strobl, 1902

Belonging to the Atrophini , Lissonota spp. have their nervellus broken near the middle, their areolet is small and their metasoma is not laterally compressed. It is a very complex genus for which identification is hard and undescribed species are still to be discovered (more details see BROCK, 2017).

With some hesitation we report this species. It is hard to key and regarding distribution this finding is odd because it is coined as a mountain or alpine species (however, the species is present in most of the neighbouring countries; YU et al., 2012). However, it was successfully identified with all existing keys. L. admontensis is a smaller species (6 to 7 mm) with a black head and mesosoma. The metasoma is also black except for at least the second and third (and sometimes fourth) tergite, which are reddish with more or less black patches. Tergites 2–3 are finely coriaceous, the rest of the body is matt and covered with silvery hairs. The tarsal claws are simple and there are no odd patterns anywhere on the body. The ovipositor is almost as long as the body (AUBERT, 1978; KUSLITZKY, 1981; BROCK, 2017).

First report for Belgium; unreported in the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Buggenhout , Buggenhoutbos (OVL); 50°59’44”N 4°12’23”E; 10/ix/2015; A. Ronse leg.; coll. AR; field observation; F. Verheyde & T. Robert det. (ObsID: 206558640) .