Barylypa propugnator (Förster, 1855), Confirmed

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 : 26-27

Barylypa propugnator (Förster, 1855)

Just like Aphanistes , Barylypa can be recognised by the presence of the distal abscissa in the hind wing CU. Additionally, the cubital index is <0.6 (usually <0.4) and the pronotum does not have an impressed medio-dorsal transverse sulcus: it is flat to slightly concave (GAULD & MITCHELL, 1977).

Barylypa propugnator can be easily identified by its habitus: it is quite large (measuring approx. 8 mm), the metasoma is largely orange with black apical tergites, and most importantly the temples are reddish. In the Low Countries it is often found from June to August near its common host Tyria jacobaeae (Linneaus, 1758) ( Lepidoptera : Erebidae ) or hostplant Senecio spp. The ichneumonid wasp appears to be slightly more common in coastal or sandy areas, due to the abundance of the above-mentioned host and host plant. It is highly probable the species has been overlooked in the Netherlands the past few decades.

First report for the Netherlands; confirmed in Belgium.

MATERIAL EXAMINED:

BELGIUM: • 1 ♀; Oostduinkerke , Ter Yde (WVL); 51°08’03”N 2°41’53”E; 2/viii/2012; F. Schoeters leg.; field observation parasitizing Tyria jacobaeae (Linnaeus, 1758) ; W. Pénigot det. (ObsID: 70204655) . • 1 ♂; Zwevegem (WVL); 50°49’35”N 3°20’25”E; 25/vi/2013; L. Clarysse leg.; field observation; W. Pénigot det. (ObsID: 77101175) . • 1 ♀; Bredene , Duinen Fort Napoleon (WVL); 51°14’23”N 2°56’09”E; 26/vii/2017; P. Vanhauwere leg. [UGent]; coll. KBIN/RBINS (ENDURE-project, 205_OST_2_N); field observation; F. Verheyde det. • 1 ♀; Harelbeke , De Gavers (WVL); 50°50’38”N 3°19’02”E; 21/vii/2020; Y. Gevaert leg.; field observation, near Tyria jacobaeae ; F. Verheyde det. (ObsID: 196744990) . • 1 ♀; Buggenhout (OVL); 51°01’56”N 4°12’34”E; 21/vii/2020; L. Verhelst leg.; field observation parasitizing Tyria jacobaeae ; F. Verheyde det. (ObsID: 196761137) […].

THE NETHERLANDS: • 1 ♂; Ameland, Buurderduinen (FR); 53°27’37”N 5°49’52”E; 2/ix/2014; T. Kiewiet leg.; field observation; W. Pénigot det. (ObsID: 87684918) . • 1 ♂; Bernheze, Arboretum (NB); 51°43’25”N 5°32’59”E; 12/vii/2015; H. van den Acker leg.; field observation; W. Pénigot det. (ObsID: 104264719) . • 1 ♀; Axel, Sportpark (ZL); 51°15’20”N 3°55’35”E; 9/vii/2018; M. Kiefer leg.; field observation parasitizing Tyria jacobaeae ; W. Pénigot det. (ObsID: 159773753) . • 1 ♀; Dishoek, Duinen en strand (ZL); 51°28’52”N 3°30’44”E; 23/vi/2020; A. van Gilst leg.; field observation parasitizing Tyria jacobaeae ; F. Verheyde det. (ObsID: 194805116) . • 1 ♀; Utrecht, Soesterberg – Vliegbasis (UT); 52°07’50”N 5°16’50”E; 1/viii/2020; A. Schaftenaar leg.; field observation; F. Verheyde det. (ObsID: 196226430) […] .