Hyposoter albosignatus Galsworthy & Shaw, 2023

Galsworthy, Anthony, Shaw, Mark R. & Haraldseide, Håkon, 2023, A key to European species of Hyposoter Förster, 1869 (Ichneumonidae: Campopleginae) with descriptions of 18 new species, and notes on all included species, Zootaxa 5290 (1), pp. 1-73 : 33-34

Hyposoter albosignatus Galsworthy & Shaw sp. nov.

( Fig. 6 )

Diagnosis. Very similar to H. albonotatus in general coloration, especially the strongly contrasting white and dark brown hind tibia with no pale fleck at base, but in the female easily distinguished by the much longer ovipositor, protruding well beyond the apex of the metasoma, and by the lack of strong pale and dark contrast in the hind tarsi.

Description (female).Wing length ca 5 mm. Sculpture of whole head evenly and rather finely granulate; face broader than long; clypeus broad, evenly convex; malar space about half basal width of mandible; temples narrow, strongly contracted behind eyes; antenna slender at base, broadening a little towards apex, with 33 flagellomeres.

Mesosoma: pronotum with weak epomia, granulate, with strong transverse striae ventrally, and along posterior edge; mesoscutum evenly granulate, notauli marked by a line of punctures; mesopleuron granulate throughout, including speculum; a line of weak transverse striae in central part of upper mesopleuron; anterior half of lower mesopleuron with some punctures and increasing rugosity towards anterior edge; a weak transverse carina crossing entire mesopleuron and passing through episternal scrobe, with short vertical ribbing on ventral side; epicnemial carina complete laterally and ventrally; mesopleural furrow strongly ribbed; metapleuron evenly granulate, matt; propodeum with fields well defined with strong carinae, but area superomedia not separated from area petiolaris, and area basalis absent, with only a strong central carina present; areae externae and area superomedia finely granulate, rest of propodeum strongly rugose.

Wings narrow, 1 cu-a postfurcal; areolet stalked; nervellus reclivous.

Metasoma: petiole smooth and shining, with strong glymma; postpetiole longer than wide, finely granulate; 2nd tergite 2x longer than wide, finely granulate; remaining tergites with very fine punctures, with weak sculpture between them; 7th tergite entire; ovipositor evenly curved, protruding well beyond apex of metasoma, its sheaths about 0.5x length of hind tibia.

Colour: black; yellow: wedge shaped patches on scape and pedicel, two very small triangular patches on upper edge of face immediately below antenna, mandibles, fore and mid coxae partially, fore and mid trochanters and trochantelli, hind trochantelli, 1st, 2nd and most of 3rd metasomal sternites; rest of fore and mid legs, and hind femur orange; hind tibia white with broad dark rings proximally and distally; hind tarsus pale brown, the basitarsus pale orange with the distal fifth darkened.

Holotype: ♀, [ UK] Llangristiolus, Anglesey, SH434736, Malaise trap by hayfield, 16–30.vi.(19)82, S.A. & D.C.Wilkinson, RSMNH 1982.066 ( NMS) . Paratype: ♀, details as holotype, but 27.viii–25.ix.(19)82 ( NMS) .

Male and biology unknown.

Figures

FIGURES 6–9. 6: Hyposoter albosignatus sp. n. Lateral habitus. 7,8: Hyposoter flavicoxa sp. n. Habitus: 7 lateral, 8 dorsal. 9,10: Hyposoter flaviventer sp. n. Habitus: 8 lateral, 9 dorsal.