Spilopteron Townes, 1960

Ito, Masato & Maeto, Kaoru, 2017, Revision of the genus Spilopteron Townes, 1965 (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, European Journal of Taxonomy 356, pp. 1-33 : 3-4

publication ID	https://doi.org/ 10.5852/ejt.2017.356
publication LSID	lsid:zoobank.org:pub:A7ED0BAC-2637-433D-9BD2-8A9E2C59B2CA
DOI	https://doi.org/10.5281/zenodo.3851924
persistent identifier	https://treatment.plazi.org/id/3D6F7173-537F-3E11-182A-4CE2FDA3FDB6
treatment provided by	Carolina
scientific name	Spilopteron Townes, 1960
status

Treatment

Genus Spilopteron Townes, 1960 View in CoL View at ENA

Spilopteron Townes, 1960 in Townes & Townes 1960: 568 View in CoL . Original designation. Type-species: Spilopteron franclemonti Townes, 1960 View in CoL .

Diagnosis

Head 0.6–0.7 times as long as wide in dorsal view. Face strongly punctate and weakly convex ( Fig. 2 View Fig ). Clypeus with a transverse median ridge ( Figs 2–3 View Fig View Fig ). Frons punctate, with a median longitudinal carina ( Fig. 2 View Fig ). Subocular groove present ( Fig. 2 View Fig ). Mandible striate except apex ( Figs 2–3 View Fig View Fig ). Lower tooth of mandible longer than upper tooth. Vertex and gena weakly and sparsely punctate. Occiput smooth. Occipital carina complete. Scutellum roundly convex in lateral view. Propodeum roundly convex in lateral view ( Fig. 5 View Fig ). Propodeal spiracle elongate ( Fig. 5 View Fig ). Fore wing with areolet open ( Fig. 4 View Fig ). Hind wing with vein Cu&cu-a intercepted near middle ( Fig. 4 View Fig ). Hind tarsus claws without an accessory tooth. Basal convexity of S1 covered with some erect setae. Ovipositor tip without transverse ridges.

Distribution

Palearctic, Oriental and Nearctic regions.

Systematic position

The genus used to belong to the tribe Acaenitini sensu Townes (1971) , but Wahl & Gauld (1998) proposed the discontinuance of the use of tribes within the subfamily Acaenitinae ; we follow their opinion here. This genus closely resembles Siphimedia Cameron, 1902 , known from the Oriental region, and Metachorischizus Uchida, 1928 from the Palearctic and Oriental regions, but it can be distinguished from them by the maxillary palpus with short hairs (vs long hairs in Siphimedia ), the propodeal spiracle not enclosed by an elliptical carina (vs enclosed in Siphimedia ), the propodeum with distinct regular carinae (vs irregular carinae in Metachorischizus ), and the bullae in 2m-cu a little distant from each other (vs very close in Metachorischizus ).