Umbothynnus subspinosus, Brown, Graham, 2008

Brown, Graham, 2008, Umbothynnus, a newly recognised genus for the Rhagigaster alexius Guérin group of species (Hymenoptera: Tiphiidae: Thynninae: Rhagigasterini) from northern Australia, Zootaxa 1933, pp. 43-58 : 54

Umbothynnus subspinosus , New Species

(Figs 3, 4, 10, 33–35)

Diagnosis. Male. Wings weakly infuscate; lateral carinae of T7 straight and slightly convergent then abruptly and strongly incurved and almost confluent posteriorly. Similar to U. subcornutus which does not have the epipygial (T7) carinae strongly convergent.

Head. Not emarginate posteriorly, not narrowed behind eyes; clypeus weakly emarginate, convex, sagittally carinate becoming branched and subspinose near apical margin, triangularly depressed between branches and apical margin, closely punctate laterally and basally, sparsely punctate and polished medially; antennal prominence with a strong broad V-shaped carina, produced below carina to antennal insertions; frons weakly transversely carinate, closely punctate, obscurely sagittally carinate and weakly depressed below transverse carina; vertex punctate, impunctate posterolaterad to hind ocelli; gena closely and finely punctate.

Mesosoma . Pronotum narrower than head, sparsely punctate, anterior margin emarginate, raised and carinate, not produced laterally; mesoscutum closely; tegulae punctate basally; mesoscutellum closely punctate laterally, impunctate medially, weakly convex, subtriangular, broadly truncate posteriorly; metanotum closely punctate, below level of mesoscutellum; propodeum oblique posteriorly, not transversely carinate, closely punctate anteriorly with a medial impunctate area, finely transversely rugose-punctate posteriorly; fore coxae closely and finely punctate; mesopleura rugose-punctate.

Metasoma. Cylindrical; T1–5 sparsely punctate, impunctate posteriorly, T6 punctate; S1 closely punctate, S2–7 punctate; gradulus curved and weakly scrobiculate on T2, straight and scrobiculate on T3–6 and S3–6, absent on S7; T1 oblique, not tuberculate; S1 broadly raised, anterior V-shaped carina weakly produced ventrally; S2 not tuberculate; epipygium truncate posteriorly, strongly carinate laterally; hypopygium with obtuse basal angles; cuspis short; paracuspis of medium length.

Length. Body 9 mm; fore wing 7 mm; hind wing 5 mm.

Female. Unknown.

Distribution. Coastal north-western Western Australia near Cape Bertholet.

Etymology. The specific name is derived from Latin, and refers to the subspinose clypeal carina of the male.

Material examined. Western Australia: holotype. ɗ 8 km S of Cape Bertholet, West Kimberley, 19o 19'S (sic, the latitude should be 17o 19'S), 122o 10'E, 19.iv.1977, D.H. Colless ( ANIC); paratypes: 2ɗ same data as holotype except collected 17.iv.1977 or 22.iv.1977 ( ANIC, NTM).