Foersterella reptans (Nees)

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 : 566-567

Foersterella reptans (Nees)

Figs 3 , 8, 11, 12 , 14

Pteromalus reptans Nees, 1834: 114 . Type material not located.

Tetracampe flavipes Förster, 1841: 34 . Type material in NHMW, not examined. Synonymized by Bouček (1992: 32). Tetracampe galerucae Thomson, 1878: 183 . Synonymized by Bouček (1958: 69). Hyperbius flavipes (Förster) , Förster (1878: 58).

Foersterella flavipes (Förster) , Dalla Torre (1898: 87).

Tetracampe reptans (Nees) , Bouček & Rasplus (1991:134).

Foersterella reptans (Nees) , Bouček (1992: 32).

Material (25♂). Czech Republic (5♂ BMNH, MZLU); England (5♂ BMNH); France (4♂ BMNH); Sweden (11♂ BMNH, MZLU).

Diagnosis. Male. Antenna ( Figs 3 , 8 ): F1 and 2 each 1.4×, F3 1.2×, and F6 0.7× as long as wide; antennal clava (in widest part) 2.0× as wide as greatest width of pedicel; F1–3 and clava dark brown, F4–6 yellowish-white; face with rather dense setation, as in F. erdoesi ( Fig. 6 ).

Hosts. Endoparasitoid in eggs of Cassida deflorata Suffrian ( Labeyrie 1961) , C. murraea L. ( Bouček & Askew 1968), C. rubiginosa ( Bouček 1958) , and C. viridis L. ( Bouček 1958) ( Coleoptera : Chrysomelidae ). I have not seen any reared specimens of this species, and in view of the confusion with species identification, host records in literature must be regarded with caution.

Distribution. Austria, Czechoslovakia, Denmark, Germany, Hungary, Sweden, Yugoslavia (all seven records in Bouček 1958), France ( Labeyrie 1961), Italy ( Herting 1973), Romania ( Herting 1973), United Kingdom ( Graham, 1963). In view of the confusion with species identification, distribution records in literature must be regarded with caution.

Figures

FIGURE 14. Foersterella sp., female, habitus in lateral view, specimen length 1.2 mm. Specimen from England, Middlesex, collected and mounted by M. W. R. de V. Graham (specimen in BMNH).

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.