Hyposoter aglyphus 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 : 31-32

Hyposoter aglyphus Galsworthy & Shaw sp. nov.

( Figs. 1, 2 )

Diagnosis. A combination of red-marked metasoma, pale tegulae, dark fore trochanter and trochantellus, and lack of a glymma separate this species from all but H. morairae . It is easily separated from the latter by the longer ovipositor and longer face. Some specimens have traces of a glymma in the form of an outline, but it is never recessed.

Description (female). Wing length ca 5 mm. Head: face slightly longer than broad, longitudinally rugose, with punctures well hidden between the rugae; clypeus distally curved, only slightly convex, apex sharp, similarly but less heavily sculptured than face; mandibles strongly tapering, with broad flange in basal two thirds; malar space about equal to base of mandible; frons granulose in centre, granulate laterally; vertex and temples finely granulate; antenna slender and tapering, first flagellomere about 3x as long as wide; 27–28 flagellomeres.

Mesosoma: mesoscutum with fairly large punctures about one diameter apart spread over its whole surface on a strongly granulate background, and becoming centrally slightly rugose; anterior and lower part of mesopleuron with small punctures about 2 diameters apart on a lightly granulate background; speculum shining, faintly striate; area in front of speculum striate, striations continuing towards upper edge of mesopleuron where they are strong; metapleuron with larger punctures on a granulate background; propodeum punctate on anterior lateral areas, otherwise rather coarsely rugose; area basalis reduced to a broad keel; area superomedia about as long as wide, 5-sided, its posterior end marked only with rugae; carinae of lateral areas, including costulae, strong.

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

Metasoma: petiole of first tergite smooth and polished, setose from about one third, and with faint very fine cellular microsculpture, rather square in cross section, and without glymma; dorsolateral carina absent; postpetiole broad and rounded; 2nd tergite about as long as wide; 2nd tergite onwards with unpunctured, almost smooth surface, but somewhat dull as a result of very fine transverse microsculpture; 6th and 7th tergites entire; ovipositor about 1.5x apical depth of metasoma, minimally curved upwards, with fine subapical notch.

Colour: black; mandibles dark brown at base, yellowish towards apex, with teeth deep red-brown; tegula yellow; all coxae, trochanters and trochantelli black; all femora orange; fore tibia orange inside, white outside; mid tibia orange, but proximal half white on outside; hind tibia orange, with broad pale proximal ring and faint dark subproximal and distal rings; fore tarsus orange, middle and hind tarsi orange-brown with basitarsus broadly white proximally; tergite one of metasoma black with a variable amount of orange ranging from centre of postpetiole to almost whole of postpetiole; tergites 2 and 3 orange; tergite 4 orange proximally; rest of metasoma dark brown to black.

Holotype: ♀, [ UK] Llangristiolus , Anglesey, SH434736, Malaise Trap by hayfield, 7–27.viii.82; S.A. & D.C.Wilkinson, RSMNH1982.066 ( NMS) . Paratypes: 1♀, details as holotype ; 1♀, Praa Sands , Cornwall 29.7.76, M.R.Shaw, Hyposoter sp. det R. Hinz ; 1♀, Ainsdale NNR, Lancs , 13.6.75, M.R.Shaw ; 1♀, France, Bédoin , Vaucluse, 7–16.vii.91, M.R.Shaw (all in NMS) .

Biology: unknown. A male in the NMS collection which is generally similar to this species, and would run to it in the key, was reared from Aspitates ochrearia (Rossi) ( Lepidoptera , Geometridae ) found at Dungeness in Kent. The specimen lacks the pale proximal ring on the hind tibia which is present in the type series of females, and has a much darker hind tarsus, and therefore may not belong to the same species, but this host would fit the generally seashore or xerophilic localities of most of the type series.

Figures

FIGURES 1–5. 1,2: Hyposoter aglyphus sp. n. Habitus: 1 lateral, 2 dorsal. 3–5: Hyposoter castaneus sp. n. Habitus: 3 lateral, 4 dorsal; 5 detail of mesopleuron.