Tymmophorus obscuripes ( Holmgren 1858, Bassus

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 106

Tymmophorus obscuripes ( Holmgren 1858, Bassus )

Bassus rufocinctus Desvignes 1862

Bassus arcticus Holmgren 1869

Promethes luctuosus Schmiedeknecht 1926 Tymmophorus nigrofemoratus Dasch 1964a

Diagnosis. Fore wing length 3.4–4.1 mm. Antenna of both sexes with 17–19 flagellomeres. Mesoscutum smooth between irregular, rather weak punctures which are often denser towards anterior margin. Mesopleuron smooth and shining, at most with some weak punctures along anterior margin and very restricted coriaceous areas. Propodeum with a full set of strong carinae enclosing basal, lateral and petiolar areas, the areas with rugose sculpture. Tergite 2 0.8–1.1 times as long as wide. Metasoma in females dorsoventrally depressed, tapered towards apex.

Colouration of females. Antenna black or dark brown. Head and mesosoma black, face with yellow inner orbits which are sometimes restricted to frons, yellow or brown on clypeus and mouthparts, yellow on hind corner of pronotum, tegula, shoulder mark, and sometimes upper mesepimeron; scutellum black. Legs mainly orange or brown, coxae and trochanters black; femora extensively dark basally, hind femur often all dark; hind tibia and tarsus yellow or light brown, tibia sometimes with dark apex and a weak subbasal mark. Metasoma black, often with orange apical bands on tergites 2 to 4 or 5.

Colouration of males. As in female, including black face with yellow along inner orbits.

Material examined. Lectotype of Bassus obscuripes Holmgren : Sweden, Västra Götalands län, leg. Boheman. 1♀, at NRM (hereby designated).

New for North Korea: Mt. Pektusan, Explosion-Lake, 2000–2500m, leg. Dely&Draskovits 18.VII.1977. 1♀, at TMA.

Austria (1), Finland (4), Germany (7), Hungary (6), Netherlands (1), North Korea (1), Norway (2), Sweden (>100), Switzerland (>100), United Kingdom (70).

Distribution. Holarctic.

Figures. Metasoma ♀ ( Fig. 7 C), propodeum ( Fig. 9 C, 13C), head ( Fig. 12 F), habitus ( Fig. 35 E), male terminal sclerites ( Fig. 38 F).

Figures

FIGURE 7. Macro- and microsculpture of diplazontine metasomas and faces. A – D: tergites 1 – 3 of the metasoma. A. Diplazon scutatorius, smooth and shining between the strong and dense punctures. B. Diplazon tetragonus, with partly rugulous sculputure basally on tergite 2, and coriaceous sculpture on tergite 3, both tergites bearing weak punctures on a smooth background behind the strong transverse impressions. C. Tymmophorus obscuripes, with rugose sculpture on tergites 1 and 2, becoming more coriaceous on tergite 3. D. Woldstedtius holarcticus, with coriaceous tergites and striae basally on tergite 2. E – H: faces showing sculpture and shape of clypeus. E. Sussaba flavipes, with a face that is coriaceous only on the middle elevation. F. Woldstedtius holarcticus. G. Diplazon scutatorius. H. Homotropus signatus. F. – H. all with strongly coriaceous and matt sculpture. Scale bars represent 500 µm.

FIGURE 9. Propodeum of diplazontine species. A. propodeum of Diplazon scutatorius with areas and carinae as termed by Townes (1965) marked. ba = basal area, pa = petiolar area (fused with areola, see 9 C), la 1 = first lateral area, la 2 = second lateral area, pla 12 = fused first and second pleural areas, pla 3 = third pleural area, mp = mesopleuron, 1 = transverse carina, 2 = median longitudinal carina, 3 = lateral longitudinal carina, 4 = pleural carina. B. same as A, but viewed laterally. C. Propodeum of Tymmophorus obscuripes with full carination and even an indication of the areola between the basal and petiolar areas. D. Propodeum of Homotropus signatus with carinae partly reduced but with the posterior ends of median and lateral longitudinal carinae present and transverse carina indicated by rugae. E. Propodeum of Woldstedtius holarcticus with carinae completely reduced. Scale bars represent 500 µm.

FIGURE 35. Habitus of Diplazontinae species. A. Syrphophilus asperatus. B. Syrphophilus bizonarius. C. Syrphophilus scabriculus. D. Tymmophorus erythrozonus. E. Tymmophorus obscuripes. F. Tymmophorus suspiciosus.

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 12. A. Diplazon laetatorius ♀, mesonotum showing notauli. B. Syrphoctonus tarsatorius ♀, mesonotum. C. Diplazon tetragonus ♀, fore wing. D. Enizemum ornatum ♀, fore wing. E. Promethes sulcator ♀, head. F. Tymmophorus obscuripes ♀, head. G. Diplazon tetragonus ♀, clypeus. H. Tymmophorus suspiciosus ♀, clypeus. I. Daschia brevitarsis ♀, clypeus. J. Campocraspedon caudatus ♀, clypeus. K. Xestopelta gracillima ♀, clypeus. L. Diplazon tetragonus ♀, hind tibia.