Orthizema hadrocerum (Thomson, 1884)

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 : 98

Orthizema hadrocerum (Thomson, 1884)

Orthizema hadrocerum can be recognised easily. It is the only species (speaking for macropterous females) with an orange thorax and propodeum ( SCHWARZ & SHAW, 2011) . Its metasoma is equally orange, with a white band on the last tergite. The fore wings are darkened with a white band coming from the pterostigma. The antennae are tricoloured (orange-blackwhite-orange). It seems to be rather uncommon, but more widespread than originally thought. Specimens were caught with several methods: sweeping net (field observations), malaise traps and light traps. The only host known is the lepidopteran Taleporia tubulosa (Retzius, 1783) ( Lepidoptera : Psychidae ) (HAUSER, 1994). First report for Belgium and the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Somal (NA); 14/vi/2014; P-N. Libert leg.; coll. PNL; field observation; M. Schwarz det. • 1 ♀; Zichem (VB); 50°59’09”N 4°56’22”E; 8/viii/2018; M. Herremans leg.; light trap; M. Schwarz det. (ObsID: 161131930) . • 1 ♀; Oostkamp (WVL); 51°10’03”N 3°16’34”E;/ vi/2019; A. Zwaenepoel leg.; coll. FV; malaise trap; F. Verheyde det. • 1 ♀; Hallaar (AN); 51°05’10”N 4°44’35”E; 11/viii/2019; G. Van den Wyngaert leg.; field observation; F. Verheyde det. (ObsID: 177829717) . • 1 ♀; Sinaai , Fondatie van Boudelo (OVL); 51°10’20”N 4°00’36”E; 17/viii/2019; M. Valdueza leg.; field observation; F. Verheyde det. (ObsID: 178363508).

THE NETHERLANDS: • 1 ♀; Dorst (NB), De Leemputten ; 51°35’45”N 4°52’54”E; 19/x/2013; R. & B. van Middelkoop leg.; field observation; F. Verheyde det. (ObsID: 79967200) . • 1 ♀; Nijmegen, Molenhoek (GE); 51°45’54”N 5°52’52”E; 25/v/2015; B. Schoenmakers leg.; field observation; F. Verheyde det. (ObsID: 102957482) . • 1 ♀; Bergen (NH); 52°40’02”N 4°42’21”E; 20/vi/2016; T. de Graaf leg.; field observation; M. Schwarz det. (ObsID: 120205286) . • 1 ♀; Tilburg, De Loonse en Drunense Duinen (NB); 51°38’17”N 5°07’60”E; 28/vi/2019; H. Nouwens leg.; field observation; F. Verheyde det. (ObsID: 175331272) . • 3 ♀♀; Utrecht, Soesterberg – Vliegbasis West (UT); 52°07’50”N 5°15’58”E; 7/vii/2019; 17/vii/2019 & 18/viii/2019; T. Zeegers leg.; coll. FV & Naturalis (Soesterberg-project, 5–7.VII.2019; 15–17.VII.2019 & 15–18.VIII.2019; nr. 26, nr. 32 & nr. 40); malaise trap; F. Verheyde det. […].