Woldstedtius citropectoralis ( Schmiedeknecht 1926, Homocidus

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 111

Woldstedtius citropectoralis ( Schmiedeknecht 1926, Homocidus )

Bassus abdominator Bridgman 1886 (homonym)

Diagnosis. Fore wing length 3.5–4.8 mm. Antenna of both sexes with 19–21, very rarely 22 flagellomeres. Face broadened and conspicuously widened ventrally, especially in males. Mesopleuron finely and evenly coriaceous. Propodeum devoid of carinae, evenly coriaceous also on petiolar area.

Colouration of females. Antenna black. Head and mesosoma black, face usually with a small yellow face patch which is smaller than central elevated area, clypeus black, yellow on mouthparts, hind corner of pronotum, tegula, sometimes subtegular ridge, with or without small shoulder marks, and upper mesepimeron; scutellum at most with a small yellow apical spot. Mesopleuron sometimes marked with orange below which can extend onto propodeum and first tergite. Legs including coxae orange, fore coxa often dark basally; femora orange; hind tibia black with a white base, hind tarsus dark. Metasoma black, sometimes with some orange markings.

Colouration of males. As in females but with yellow ventrally on antenna, entire face, propleuron, and small yellow shoulder marks; epicnemium, mesosternum and lower mesopleuron usually mostly yellow. Coxae mainly yellow, hind coxa usually marked with orange or black. Metasoma black with yellow spots or bands basally on tergites 3 to 4 or 5.

Material examined. New for Norway: Rygge, Ekeby, Gunnarsbekken, EIS 19 (Malaise trap), leg. L.O.Hansen & G.Walberg, 19.V.–17.VI.1992. 2♀, at MR.

Finland (7), Germany (2), Hungary (2), Norway (3), Russia (1), Sweden (60), Switzerland (20), United Kingdom (12).

Distribution. Holarctic.

Figures. Tip of metasoma with ovipositor sheaths ♀ ( Fig. 15 G), face ♂ ( Fig. 27A ), face ♀ ( Fig. 27B ), habitus ( Fig. 36 C), male terminal sclerites ( Fig. 38 H).

Figures

FIGURE 27. Faces of the more common Woldstedtius species. A. Woldstedtius citropectoralis ♂. B. Woldstedtius citropectoralis ♀. C. Woldstedtius biguttatus ♀. D. Woldstedtius flavolineatus ♀. Scale bars represent 500 µm.

FIGURE 36. Habitus of Diplazontinae species. A. Woldstedtius bauri sp. nov. B. Woldstedtius biguttatus. C. Woldstedtius citropectoralis. D. Woldstedtius holarcticus. E. Woldstedtius patei. F. Xestopelta gracillima.

FIGURE 38. Ninth sternite and ninth and tenth tergites of male Diplazontinae species. A. Sussaba erigator. B. Sussaba pulchella. C. Sussaba roberti. D. Syrphophilus asperatus. E. Tymmophorus erythrozonus. F. Tymmophorus obscuripes. G. Woldstedtius bauri. H. Woldstedtius citropectoralis. I. Woldstedtius holarcticus. J. Xestopelta gracillima.

FIGURE 15. A. Syrphophilus tricinctorius ♀, metasoma. B. Homotropus crassicornis ♀, metasoma. C. Bioblapsis polita ♀, propodeum and first tergite. D. Homotropus crassicornis ♀, propodeum and first tergite. E. Bioblapsis polita ♀, metasoma. F. Bioblapsis polita ♀, antenna. G. Woldstedtius citropectoralis ♀, apical metasomal segments and ovipositor sheaths. H. Diplazon neoalpinus ♀, apical metasomal segments and ovipositor sheaths. I. Homotropus signatus ♀, apical metasomal segments and ovipositor sheaths.