Two hundred and five ichneumonid wasps reported for the first time in Belgium and the Netherlands (Hymenoptera: Ichneumonidae) Verheyde, Fons Hoekstra, Paul Libert, Pierre-Nicolas Meijer, Hilco Ketelaere, Augustijn De Vandaudenard, Thibaud Belgers, Dick Brosens, Edwin Belgian Journal of Entomology 1880 122 1 142 5TTLW (Gravenhorst, 1829) Gravenhorst 1829 [189,795,501,531] Insecta Ichneumonidae Agrothereutes Animalia Hymenoptera 52 53 Arthropoda species aterrimus    Agrothereutes aterrimusis easy to recognise within the genus, it is the only species with a completely black metasoma (except for a white band on the apical tergites; see Fig. 22). The males are very slender, with the hind tarsi white and a brown pair of front and mid tibiae. It is one of the more common species reported in this paper which was missing from both Belgium and the Netherlands. Observations were often made in or near gardens, but hosts are unknown so far. First report for Belgiumand the Netherlands.   MATERIAL EXAMINED:   BELGIUM: • 1 ♂; Evere(BR); 50°52’44”N 4°23’28”E;  7/vi/2010; B. Hanssensleg.; field observation; M. Schwarzdet. (ObsID: 48439160). •  1 ♀; Mechelen(AN); 51°01’55”N 4°29’16”E;  16/v/2011; J. Soorsleg.; field observation; M. Schwarz& F. Verheydedet. (ObsID: 54800956). •  1 ♀; Keerbergen(VB); 50°59’58”N 4°37’58”E;  2/vi/2017; J. Denonvilleleg.; M. Schwarz& F. Verheydedet. (ObsID: 139395477). •  1 ♀; Merelbeke(OVL); 50°59’31”N 3°44’56”E;  15/vi/2017; P. De Somerleg.; field observation; F. Verheydedet. (ObsID: 140327413). •  1 ♀; Drongen(OVL); 51°02’17”N 3°35’48”E;  2/viii/2019; P. Lambrechtleg.; field observation; F. Verheydedet. (ObsID: 177340138) […].   THE NETHERLANDS: • 1 ♀; Wageningen(GE); 51°57’59”N 5°40’24”E;  15/vi/2016; D. Belgersleg.; field observation in skylight; M. Schwarz& F. Verheydedet. (ObsID: 120005858); Fig.22. •  1 ♂; Delft(ZH); 51°59’00”N 4°21’32”E;  22/vii/2018; W. Veldhuisleg.; field observation; M. Schwarzdet. (ObsID: 160323427). •  1 ♀; Zoetermeer, Seghwaert(ZH); 52°04’09”N 4°30’15”E;  12/viii/2018, F. M. Jansenleg.; field observation; M. Schwarz& F. Verheydedet. (ObsID: 161262193). •  1 ♀; Zoetermeer, Seghwaert(ZH); 52°04’09”N 4°30’15”E;  15/viii/2018; F. M. Jansenleg.; field observation; F. Verheydedet. (ObsID: 161442145). •  1 ♀; Wageningen(GE); 51°57’59”N 5°40’24”E;  15/vi/2020; D. Belgersleg.; field observation in skylight; F. Verheydedet. (ObsID: 194152450) […]. 2010-06-07 B. Hanssens Belgium M. Schwarz 50.878887 Evere 17 4.391111 52 53 1 1 2011-05-16 J. Soors Belgium M. Schwarz & F. Verheyde 51.031944 Mechelen 17 4.4877777 52 53 1 1 2017-06-02 J. Denonville Belgium M. Schwarz & F. Verheyde 50.999443 Keerbergen 17 4.6327777 52 53 1 1 2017-06-15 P. De Somer Belgium F. Verheyde 50.991943 Merelbeke 17 3.748889 52 53 1 1 2019-08-02 P. Lambrecht Belgium F. Verheyde 51.038055 Drongen 17 3.5966666 52 53 1 1 2016-06-15 D. Belgers & Fig. Netherlands M. Schwarz & F. Verheyde 51.96639 Wageningen 17 5.673333 52 53 1 1 2018-07-22 W. Veldhuis Netherlands M. Schwarz 51.983334 Delft 17 4.3588886 52 53 1 1 2018-08-12 F. M. Jansen Netherlands M. Schwarz & F. Verheyde 52.069164 Zoetermeer 17 4.5041666 Seghwaert 52 53 1 1 2018-08-15 F. M. Jansen Netherlands F. Verheyde 52.069164 Zoetermeer 17 4.5041666 Seghwaert 52 53 1 1 2020-06-15 D. Belgers Netherlands F. Verheyde 51.96639 Wageningen 17 5.673333 52 53 1 1