Remarks on Hymenoptera on urban green roofs in Belgium Author Verheyde, Fons Author Jacobs, JEffrEY Author Dekoninck, WOUTEr Author Achterberg, Kees Van Author Rond, JErOEn Author Blanck, Tim De Author Schoonvaere, KarEL Author Nieuwenhuijsen, Hans Author Ketelaere, Augustijn De Author Minnebo, BarT Author Ferrer-Suay, Mar text Belgian Journal of Entomology 2023 2023-03-03 140 1 37 journal article 10.5281/zenodo.10981934 2295-0214 10981934 EB983FDD-CAE9-48F7-AA63-5F49CC9B6CD1 Anergates atratulus Schenck, 1852 BELGIUM : • 1 alate gyne; N51.230° E4.415° ; vi/2021 ; J. Jacobs leg.; coll. RBINS ; pan trap (blue); W. Dekoninck det. Remarks: Anergates atratulus is an obligate parasitic and workerless species in nests of Tetramorium impurum / caespitum in Belgium ( VANKERKHOVEN & DEKONINCK, 2022 ). On the roof where we collected the A. atratulus gyne no Tetramorium -workers were found and hence we have no indication for any Tetramorium nests and settlement of this parasitic species on that rooF. It seems a gyne of this species arrived on the roof during her search for a nest to parasite, but this search was unsuccessful.