Rynchobanchus flavopictus Heinrich 1937

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 : 33

Rynchobanchus flavopictus Heinrich 1937 (Fig. 8 A–B)

Rynhobanchus is a remarkable genus within the tribe of Banchini . Its habitus is somewhat similar to Banchus spp. , but it misses the spine on its scutellum and has no trace of posterior transverse carina on its propodeum. Furthermore, the metasoma is uncompressed (Fig. 8A–B).

On colour R. flavopictus is easily distinguishable from the other European species R. bicolor Kriechbaumer 1894 , which has a predominantly reddish metasoma. R. flavopictus was only recently reported in Belgium ( LIBERT, 2019a) and is probably genuinely rare or at least rather uncommon. Host records need further confirmation (see also BROCK, 2017), but phenology suggests an active host in spring (April–May).

First report of the species and of the genus for the Netherlands; confirmed in Belgium.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Mechelen , Stadsbos Kauwendaal (AN); 51°02’50”N 4°29’27”E; 26/iv/2020; N. Iwens leg.; field observation; F. Verheyde det. (ObsID: 189701657) . • 1 ♀; Herselt , Blauwberg (AN); 51°02’47”N 4°55’27”E; 4/v/2020; I. Van den Broek leg.; field observation; F. Verheyde det. (ObsID: 190428447) .

THE NETHERLANDS: • 1 ♀; Valkenburg , De Kluis (LIN); 50°51’36”N 5°51’25”E; 6/iv/2012; S. Lamberts leg.; field observation; F. Verheyde & W. Pénigot det. (ObsID: 181850552); Fig. 8A–B . • 1 ♀; Zwolle , Westerveldse Bos (OR) ; 52°32’46”N 6°05’05”E; 15/iv/2014; G. Reitsma leg.; field observation; F. Verheyde det. (ObsID: 83377666) . • 1 ♂; Schiedam , Prinses Beatrixpark (ZH); 51°55’57”N 4°23’12”E; 5/v/2019; P. van Santbrink leg.; field observation; F. Verheyde det. (ObsID: 171713183) .