Rhimphoctona pectoralis (Kriechbaumer, 1890)

Varga, Oleksandr, 2017, A review of the genus Rhimphoctona Förster, 1869 (Hymenoptera: Ichneumonidae: Campopleginae) from the Ukrainian Carpathians, with a key to European species, Zootaxa 4263 (2), pp. 387-394 : 393

Rhimphoctona pectoralis (Kriechbaumer, 1890)

( Figs 1 , 3–5 )

Rhimphoctona maiator Aubert, 1986 syn. nov.

Material examined. Ukrainian Carpathians: female, Ivano-Frankivsk Region, Bogorodchany District , Mochary , 48°50'51.17"N, 24°35'26.91"E, 300–350 m, mixed forest, 5 km NE of Bogorodchany, sweep netting, 6.vi.2011 ; male, ibid., sweep netting, 12.v.2013; male, ibid., sweep netting, 4.vi.2013; male, ibid., sweep netting, 13.v.2014; male, Zhbyr , 48°47'4.92"N, 24°28'46.45"E, 400 m, mixed forest, 7–8 km SW of Bogorodchany, sweep netting, 23.v.2012 ; female, Dibrova , 48°46'10.35"N, 24°30'20.28"E, 310 m, oak forest, 5 km SW of Bogorodchany, sweep netting, 17.vii.2011 ; male, ibid., sweep netting, 2.vi.2012; female, ibid., sweep netting, 12.vi.2013; female, Gorgany , 48°36'42.77"N, 24°09'10.69"E, 1200 m, coniferous forest, 5 km SW of Stara Guta, sweep netting, 4.vi.2012. Additional material: 5 males and 6 females from ZSM collection ; 1 female (holotype of R. maiator ) from CMZL collection.

Diagnosis. The female is characterized by the black hind coxae; short, parallel to weakly narrowed temples behind eyes ( Fig. 1 . 8); strongly sculptured mesoscutum; densely punctate mesopleuron with partly rugulo-punctate speculum ( Fig. 3. 4 ); propodeum with distinct costulae, but partly enclosed apically and/or laterally area superomedia ( Fig. 4 . 12); and ovipositor which is about 1.1–1.3 × the length of hind tibia. The male generally resembles female, but has red hind coxae, yellow face and ventral mesopleuron ( Fig. 5. 3 ).

Distribution. Palaearctic and Oriental region ( Yu et al. 2012), new record for Ukraine.

Remarks. Rhimphoctona maiator holotype female has weakly narrowed temples behind eyes and generally resembles R. pectoralis . This species has an ovipositor which is about 1.3 × the length of hind tibia (intermediate between R. megacephala and R. pectoralis ). Rhimphoctona maiator paratype male generally resembles R. megacephalus . It is possible that R. megacephalus and R. pectoralis are the same species as there is no clear differentiation in ovipositor length, and presence or absence of area superomedia carinae can be variable. So, even despite the fact of different male coloration, the specific status of these two species needs confirmation using DNA analysis.

Figures

FIGURE 1. Rhimphoctona spp., dorsal view of head, female. 1 — R. grandis; 2 — R. rufocoxalis; 3 — R. lucida; 4 — R. xoridiformis; 5 — R. teredo; 6 — R. longicauda; 7 — R. maiator; 8 — R. pectoralis.

FIGURE 3. Rhimphoctona spp., lateral view of mesopleuron, female. 1 — R. longicauda; 2 — R. melanura; 3 — R. megacephalus; 4 — R. pectoralis.

FIGURE 4. Rhimphoctona spp., dorsal view of propodeum, female. 1 — R. grandis; 2 — R. rufocoxalis; 3 — R. lucida; 4 — R. obscuripes; 5 — R. teredo; 6 — R. xoridiformis; 7 — R. melanura; 8 — R. longicauda; 9 — R. megacephalus; 10 — R. maiator; 11 — R.? megacephalus / melanura; 12 — R. pectoralis.

FIGURE 5. Rhimphoctona spp. 1 – 2 — dorsal view of mesoscutum, Female: 1 — R. lucida; 2 — R. teredo; 3 — R. pectoralis, lateral view of head and mesososma, male; 4 – 5 — frontal view of head, male; 4 — R. xoridiformis; 5 — R. teredo.