Hyposoter ruficoxator 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 : 64-65

Hyposoter ruficoxator Galsworthy & Shaw sp. nov.

( Figs. 37, 38 )

Diagnosis. One of only two species with an all black metasoma and red hind coxa. It is easily distinguished from the other, Hyposoter coxator , by the colour of the hind tibia, as in the key.

Description. Female: fore wing 4 mm.

Head: face longer than broad, distinctly narrowed ventrally, with close-set punctures distinctly visible on a granulate surface; clypeus fairly narrow, convex, evenly rounded, sculptured as face; malar space about half basal width of mandibles, latter strongly narrowed towards apex, with a wide ventral flange to about two thirds; frons granulate with close-set punctures, the latter disappearing on vertex, except between the two hind ocelli; temples sharply narrowed behind eyes, very short in dorsal view, granulate with small punctures; hypostomal carina disappearing well before meeting oral carina; antenna slender, gently tapering, with 39 flagellomeres in the unique female.

Mesosoma: mesoscutum and scutellum very finely granulate throughout, the lines of the notauli marked by a slight rugosity; pronotum similarly sculptured, without epomia, but with some transverse rugae in lower part; mesopleuron granulate throughout, including speculum, with small rugae in prefoveal depression, and with scattered punctures in ventral part only; metapleuron granulate with punctures; pronotum finely granulate, slightly rougher in petiolar area; carinae very reduced, with only a short basal carina, not reaching the base of the propodeum, the proximal two sides of the area superomedia, and the costulae visible; petiolar area without carinae.

Wings narrow, 1 cu-a interstitial; areolet small, rhomboid, short-stalked.

Metasoma: first tergite with upper side very finely granulate, petiole narrow and parallel-sided until close to apex, postpetiole longer than broad; second and third tergites elongate, dull with very fine sculpture and minute punctures; fourth to seventh tergites progressively more shiny, with more visible, but still very small, punctures; sixth and seventh tergites entire; ovipositor short, projecting very slightly beyond tip of metasoma.

Colour: black; mandibles except for teeth, underside of scape, tegulae, fore and mid coxae and trochanters yellow; apex of clypeus, rest of fore and mid legs, hind coxa, trochanters and femur, and sternites one and two orange; hind femur dull whitish, with very slight subapical dark mark, and apical eighth darkened; hind tarsi dull whitish with extreme apices darkened; tergites two and three with faint reddish wash laterally.

Male: very similar to female, but with more extensive carination on the propodeum, including faint borders to the petiolar area; 38 flagellomeres; colour identical, except orange on clypeus more extensive, and red wash at sides of tergites two and three lacking.

Holotype: ♀, Mergentheim [ Germany], 30.vi.1956, red label ‘1070’, label in Horstmann’s hand ‘cf. coxator Hinz’ ( ZSM) . Paratypes: 2♁, details as holotype. ( ZSM) .

Remarks. Biology unknown. Identified by Horstmann as a new species.

Figures

FIGURES 35–38. 35–36: Hypsoter rivulator sp. n. Habitus: 35 lateral, 36 dorsal. 37–38: Hyposoter ruficoxator sp. n. Habitus: 37 lateral, 38 dorsal.