Foersterella erdoesi Bouček

Hansson, Christer, 2016, The European species of Foersterella Dalla Torre (Hymenoptera: Tetracampidae), including the description of two new species, Zootaxa 4137 (4), pp. 561-568 : 565

Foersterella erdoesi Bouček

Figs 2, 6 , 7, 13

Foersterella erdoesi Bouček, 1958: 69 . Holotype female in HNHM, not examined.

Material. Type material: 2♀ paratypes of F. erdoesi ( BMNH). Additional material (6♀, 21♂): England (1♂ BMNH); Romania (2♀, 3♂ BMNH); Sweden (4♀, 17♂ BMNH, MZLU).

Diagnosis. Male. Antenna ( Figs 2, 6 , 7 ): F1–3 each 1.2×, and F6 0.7× as long as wide; antennal clava (in widest part) 2.0× as wide as greatest width of pedicel; F1–6 yellowish-brown, C1 dark brown, C2 and C3 pale brown (pale part more distinct on ventral side of clava); face with rather dense setation ( Fig. 6 ). Female. Gaster elongate, 2.0–2.4× (mean 2.18, n = 7) as long as wide, with apex pointed ( Fig. 13 ).

Host. Endoparasitoid in eggs of Cassida viridis L. ( Coleoptera : Chrysomelidae ) (record checked).

Distribution. Hungary ( Bouček 1958), Romania, Sweden, United Kingdom (all records checked).

Figures

FIGURES 1 – 6. 1 – 4, Foersterella spp., habitus in lateral view: 1, F. angusticornis sp. nov., male holotype, specimen length 1.1 mm; 2, F. erdoesi Bouček, male non-type from Sweden (Skåne), specimen length 1.3 mm; 3, F. reptans (Nees), male non-type from Sweden (Skåne), specimen length 1.1 mm; 4, F. fuscicornis sp. nov., male holotype, specimen length 1.2 mm. 5 & 6. Head, frontal view, males: 5, F. angusticornis, holotype; 6. F. erdoesi, non-type from Sweden (Skåne).

FIGURES 7 – 13. Foersterella spp. 7 – 10, antenna, lateral view, male: 7, F. erdoesi Bouček; 8, F. reptans (Nees); 9, F. angusticornis sp. nov.; 10, F. fuscicornis sp. nov. 11, Foersterella sp., female, head and antennae, lateral view. 12 & 13, gaster, dorsal view, female: 12, Foersterella sp.; 13, F. erdoesi.