Umbothynnus bertholetiensis, 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 : 47-48

Umbothynnus bertholetiensis , New Species

(Figs 3, 4, 5, 18–20)

Diagnosis. Male. Integument black; wings weakly infuscate. Antennal prominence projecting; clypeus emarginate; posterolateral angles of T7 upturned enclosing concave area which is wider than long. Similar to U. alexius which does not have the posterolateral angles of T7 upturned and U. borrolooliensis which has the convex area of T7 longer than wide.

Head. Not emarginate posteriorly, not narrowed behind eyes; clypeus emarginate, convex, sagittally carinate, closely punctate; antennal prominence strongly produced with broad V-shaped carina, discontinuous medially, produced below carina to antennal insertions; frons obscurely transversely carinate, rugose-punctate, obscurely sagittally sulcate below transverse carina, not depressed; vertex and gena closely punctate.

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

Metasoma. Elongate fusiform, T1–6 closely punctate, T2–5 sparsely punctate posteriorly; S1–7 closely punctate; gradulus curved and scrobiculate on T2, straight and scrobiculate on T3–5 and S3, straight and weakly scrobiculate on T6, weakly curved and scrobiculate on S4–6, absent on S7; T1 oblique anteriorly, not tuberculate; S1 weakly medially raised, anterior V-shaped carina weakly produced ventrally; S2 not tuberculate; epipygium weakly emarginate posterior angles weakly upturned; hypopygium with rounded basal angles; cuspis short; paracuspis long

Length. Body 11 mm; fore wing 7 mm; hind wing 5 mm.

Female. Unknown.

Distribution. Coastal north-western Western Australia, Cape Bertholet, north of Broome.

Etymology. The specific name is derived from the type locality.

Material examined. Western Australia: holotype. ɗ: 8 km S of Cape Bertholet, West Kimberley, 17o 19'S, 122o 10'E, 21.iv.1977, D.H. Colless ( ANIC).