Micromonodon tener (Kriechbaumer, 1893)

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 : 96-97

Micromonodon tener (Kriechbaumer, 1893) (Fig. 48)

Micromonodon is a small genus with only one species being present in Europe. The fore wing vein has 2m-cu with two bullae and the areolet is open. The clypeus does not have a tooth medially. Their head, thorax and middle segments are finely coriaceous. The females have an ovipositor about as long as their metasoma ( TOWNES, 1970a; HORSTMANN, 1978; Fig. 48).

The mandibles of our female specimens are sharply two-teethed. Its first flagellomere has a very small orange-yellow ring basally. Its metasoma is predominantly black (the second tergite is sometimes reddish in Scandinavian specimens; see JUSSILA, 2018), but the sternites are strikingly whitish with black squares. Furthermore, the tergites 3-6 have a distinctive white band apically, which is also present on the other tergites, but only narrowly. Overall the legs are dark brown. Its hind tibiae are slightly darker with a light brown band (sub-)basally. It measures around 6 mm.

First report of the species and the genus for Belgium and the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Wervik (WVL); 50°47’04”N 3°02’09”E; 31/iii/2020; C. Kuipers leg.; field observation; F. Verheyde det. (ObsID: 187549463)

THE NETHERLANDS: • 1 ♂; Tilburg , Leijbos (NB); 51°32’36”N 5°00’53”E; 12/iii/2020; IWG KNNV Tilburg leg.; coll . PH; malaise trap (5-12); P. Hoekstra & M. Schwarz det. (ObsID: 190559963). • 1 ♀; Udenhout , De Brand (NB); 51°32’36”N 5°00’53”E; 15/iii/2020; IWG KNNV Tilburg leg.; coll . PH; malaise trap (7-14); P. Hoekstra & M. Schwarz det. (ObsID: 190559976); Fig. 48. • 13 ♂♂; Udenhout , De Brand (NB); 51°32’36”N 5°00’53”E; 28/iii/2020; IWG KNNV Tilburg leg.; coll. NB; malaise trap (21-28); P. Hoekstra det. (ObsID: 212029285) .