Hyposoter rufonigrator 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 : 65-66

Hyposoter rufonigrator Galsworthy & Shaw sp. nov.

( Figs. 39, 40 )

Diagnosis. A rather large robust species; the only species with yellow tegulae, black coxae and dark sternites to have all trochanters and trochantelli black; hind tibia strikingly contrasted, with a pale spot at base, similar to those of Hyposoter vividus and H. virginalis .

Description. Female: fore wing length 6.0– 6.8 mm.

Head: face slightly longer than broad, rather closely punctured throughout and slightly rugose except at sides; centre of clypeus undifferentiated from face, but sides with faint grooves, surface shining, closely punctured throughout, the punctures larger towards apex, gently convex, especially distally, apex sharp, with narrow unpunctured margin; malar space about equal to basal width of mandibles; latter very broad at base, strongly narrowed to teeth, with a large elliptical flange on lower edge; genal carina curving inwards strongly to meet oral carina at a distance from base of mandible, the oral carina somewhat raised; frons strongly rugose on a granulate background with a carina from between antennal bases to foremost ocellus; vertex granulate without rugosity or punctures; temples granulate and finely punctured, precipitate behind ocelli and strongly narrowed behind eyes; antenna rather short, with 25–27 flagellomeres, basal flagellomere approximately 4.0x as long as broad.

Mesosoma: pronotum with well-marked epomia, strong transverse rugae on all except upper border; mesoscutum finely granulate throughout between close-set deep punctures, and with bands of rugosity along lines of notauli, which are not impressed; mesopleuron granulate throughout, though only faintly on speculum, which is quite shiny; punctured throughout except on speculum, punctures becoming heavier and contiguous on lower mesopleuron; strongly ribbed across mesopleural suture and shortly striate across groove above mesopleural fovea; metapleuron closely punctured; propodeum with area basalis very small, triangular; area superomedia 5-sided, but only front two sides marked with strong carinae, rear three sides delineated by rugosity; sculpture of areola and first lateral areas granulate, the latter also with broad, shallow punctures; costulae present, though weak; second lateral areas and petiolar area rugose, the latter strongly so; second pleural area of propodeum with strong lateral rugae; propodeal spiracle large, slightly elliptical.

Wings narrow, 1 cu-a a little postfurcal; areolet large, quadrangular, short-stalked; nervellus slightly curved at upper end.

Metasoma: surface of first tergite matt, due to very fine, almost invisible microsculpture, with scattered very fine punctures; petiole narrowest just behind basal bulge, and widening gradually to smoothly curved trapezoid postpetiole; glymma small and unusually far forward, situated in basal half of tergite; 2nd tergite 1.2x longer than wide; all tergites very lightly sculptured, and with minute scattered punctures; 6th tergite slightly emarginate; ovipositor strongly upcurved, about 1.5x depth of metasoma.

Colour: body, and all coxae, trochanters and trochantelli black; variable amount of red on 2nd and 3rd tergites, one specimen having only a little laterally on 3rd tergite, and another with apical part of 2nd and greater part of 3rd tergites red; palps and antenna brown; tegulae and fore and mid tibiae and tarsi yellow; femora orange; hind tibia with bright yellow dorsal spot at base, rest brownish orange with central area dorsally yellow, and dark subbasal and apical rings; hind tarsi dark brown, first segment broadly white at base; mandibles dark brown with orange teeth and dorsal edge.

Male: very similar to the female, but with slightly less robust body, with striation on propodeum less evident, and ribbing across metapleural suture weaker.

Holotype: ♀, 16 August 1987, Vent [ Austria], 2000m, Typus [on pink label], Hyposoter rufonigrator, R. Bauer , [in Horstmann’s hand] rufonigrator sp. nov. R.Bauer ( ZSM) . Paratypes: 1♀, Eynetal /Pyr., 17.vii.1962, rufonigrator sp. nov ., ♀ [label in Horstmann’s writing]; 3♀, Kandersteg / CH, 17.vii.1976, E074050 N462640; 1♁, 30.6.61, Andorra (Pyr), 2510 and 1896 [in red on separate labels]; 2♁, 5.vii.1976, Gresseney-la-Trinit, E 074950 N455720, 2510 [in red]; 1♁, Vent 2200m, 8 August 1974, Hyposoter rapax, R. Bauer , ♁ (all in ZSM) .

Remarks. Evidently a montane species. The biology is unknown. Idenitified by Horstmann as an undescribed species.

Figures

FIGURES 39–43. 39–40: Hyposoter rufonigrator sp. n. Habitus: 39 lateral, 40 dorsal. 41: Hyposoter insulator lectotype. Habitus. 42: Hyposoter praecaedator lectotype. Habitus. 43: Hyposoter postcaedator lectotype. Habitus.