Polysphincta tuberosa Gravenhorst, 1829

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 : 109

Polysphincta tuberosa Gravenhorst, 1829 (Fig. 56)

This species also belongs to the second group (like P. rufipes ; cfr. supra). However, its submetapleural carina is absent or present as a weak ridge and its lateromedian longitudinal carinae of the propodeum are also absent or only weakly present. The thorax and the propodeum vary from entirely black to extensively reddish (see Fig. 56; more details in FITTON et al., 1988).

First report for Belgium and the Netherlands.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Somal (NA); 26/ix/2009; P-N. Libert leg.; coll. PNL; field observation; M. Shaw det. • 1 ♀; Wingene, Gulke Putten – Predikherenbosssen (WVL); 51°04’38”N 3°20’39”E; 29/vi/2019; F. Verheyde leg.; coll. FV; field observation; F. Verheyde & O. Varga det. (ObsID: 175421632).

THE NETHERLANDS: • 1 ♂; Wageningen, Blauwe Kamer (GE); 51°56’34”N 5°37’05”E; 22/v/2008; D. Belgers leg.; coll. KZ; reared ex Araniella spp. ; K. Zwakhals det. (ObsID: 40254918). • 1 ♀; Wageningen, Blauwe Kamer (GE); 51°56’34”N 5°37’05”E; 18/iii/2011; D. Belgers leg.; coll. KZ; reared ex Araneidae spp.; K. Zwakhals det. (ObsID: 61117112). • 1 ♂; Almere, Hanny Schaftpark (FL); 52°22’51”N 5°13’56”E; 18/iv/2020; P. Hoekstra leg.; coll. PH; reared ex Araniella spp. ; P. Hoekstra det. (ObsID: 193453902). • 1 ♂; Renkum, Golfbaan (GE); 51°59’31”N 5°45’58”E; 27/iv/2020; W. de Jong leg.; reared ex Araniella spp. ; P. Hoekstra det. (ObsID: 189861550); Fig. 56. • 1 ♂; Haaren (NB); 51°35’59”N 5°13’28”E; 14/v/2020; R. Wolfs leg.; reared ex Araniella spp. ; P. Hoekstra det. (ObsID: 191363477).