Pseudorhyssa nigricornis (Ratzeburg, 1852)

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 : 104

Pseudorhyssa nigricornis (Ratzeburg, 1852)

Pseudorhyssa nigricornis has black hind coxae and a completely black metasoma ( VARGA, 2015). It is mainly associated with conifers, where it is cleptoparasitic on Rhyssa persuasoria (Linnaeus, 1758) and possibly other Rhyssinae like Megarhyssa rixator (see below).

First report for Belgium and the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Oud-Turnhout , Landschap De Liereman (AN); 51°20’24”N 5°00’25”E; 13/v/2020; N. Van Loco leg.; field observation, oviposition on Picea abies ; O. Varga det. (ObsID: 191279896) . • 1 ♀; Oud-Turnhout , Landschap De Liereman (AN); 51°20’23”N 5°00’32”E; 16/v/2020; W. Smets leg.; field observation, oviposition on Picea abies ; F. Verheyde det. (ObsID: 191461758) . • 1 ♀; Beernem , Bossen Lindeveld (WVL); 51°06’39”N 3°19’05”E; 26/v/2020; A. De Ketelaere & L. Lams leg.; coll. ADK; field observation; A. De Ketelaere & F. Verheyde det. (ObsID: 192489996) . • 1 ♀; Mol , Vito bossen en De Bleken (AN); 51°12’50”N 5°04’02”E; 26/v/2020; J. De Witte leg.; field observation, oviposition on Picea abies ; F. Verheyde det. (ObsID: 192502856) . • 1 ♀; Beernem , Bossen Lindeveld (WVL); 51°06’39”N 3°19’05”E; 1/vi/2020; A. De Ketelaere & F. Verheyde leg.; coll. FV; field observation; & F. Verheyde det. (ObsID: 193023007) .

THE NETHERLANDS: • 1 ♀; Epen, Bovenste Bos (LIN) ; 50°45’24”N 5°53’55”E; 19/v/2012; S. Lamberts leg.; field observation; F. Verheyde det. (ObsID: 199188514) . • 1 ♀; Maastricht, Sitn-Pietersberg (LIN); 50°48’54”N 5°40’52”E; 24/iv/2017; S. Lamberts leg.; F. Verheyde det. (ObsID: 137275245) . • 1 ♀; Eindhoven, Stratumse Heide (NB); 51°24’36”N 5°30’12”E; 17/vi/2017; R. Aussems leg.; F. Verheyde det. (ObsID: 140797488) . • 1 ♀; Lage Mierde, Landgoed De Utrecht (NB); 51°26’19”N 5°09’33”E; 20/v/2020; W. Heesters leg.; field observation on Pseudotsuga sp. ; F. Verheyde det. (ObsID: 192729602) . • 4 ♀♀; Lage Mierde, Landgoed Wellenseind (NB); 51°25’35”N 5°09’24”E; 21/v/2020; F. Neijts leg.; field observation; F. Verheyde, P. Hoekstra & O. Varga det. (ObsID: 191995020) .