Umbothynnus borrolooliensis, 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 : 49-50

Umbothynnus borrolooliensis , New Species

(Figs 3, 4, 6, 21–23)

Diagnosis. Male. Integument black; wings infuscate. Clypeus emarginate; posterolateral angles of T7 upturned enclosing a concave area which is longer than wide. Similar to U. alexius which does not have posterolateral angles of T7 upturned, and U. bertholetiensis which has convex area of T7 wider than long.

Head. Not emarginate posteriorly, not strongly narrowed behind eyes; clypeus narrowly and deeply emarginate, narrowly raised, sagittally carinate, closely punctate laterally, rugose-punctate medially; antennal prominence with a broad U-shaped carina, weakly emarginate medially, produced below carina to antennal insertions; frons not transversely carinate, rugose-punctate, obscurely sagittally carinate to mid ocellus, not depressed; vertex deeply punctate to rugose-punctate, impunctate posterolaterad to hind ocelli; gena closely Metasoma. Pronotum narrower than head, rugose-punctate, anterior margin weakly emarginate, not raised, not carinate, produced laterally; mesoscutum rugose-punctate; tegulae rugose-punctate basally; mesoscutellum rugose-punctate, convex, subtriangular, rounded posteriorly; metanotum closely punctate, below level of mesoscutellum; propodeum obliquely truncate posteriorly, not transversely carinate, closely and deeply punctate anteriorly, transversely rugose-punctate posteriorly; fore coxae punctate; mesopleura rugosepunctate.

Metasoma. Elongate fusiform: T1–6 closely punctate; S1–7 closely punctate; gradulus weakly curved and scrobiculate on T2, straight and scrobiculate on T3–6 and S3–5, curved and punctate on S6, absent on S7; T1 oblique anteriorly, not tuberculate; S1 broadly and weakly raised, anterior V-shaped carina weakly produced ventrally; S2 not tuberculate; epipygium weakly emarginate, lateral angles strongly raised; hypopygium with rounded basal angles; cuspis short; paracuspis long.

Length. Body 9 mm; fore wing 6 mm; hind wing 4 mm.

Female. Unknown.

Distribution. Coastal Northern Territory near Borroloola.

Etymology. This specific name is derived from the name of the type locality.

Material examined. Northern Territory: holotype. ɗ 46 km SSW of Borroloola, 16o 28'S, 136o 09'E, 23.iv.1976, D.H. Colless ( ANIC).