Umbothynnus subcornutus, New Species (Figs 3, 4, 9, 30–32) Diagnosis. Male. Metasomal segments with posterior band of white setae; wings hyaline; clypeal carina broad, strongly developed, and projecting over apical margin. Similar to U. subspinosus which does not have a broad strongly developed clypeal carina which projects over apical margin. Head. Not emarginate posteriorly, not strongly narrowed behind eyes; clypeus weakly and narrowly emarginate, convex, strongly and broadly sagittally carinate, produced over apical margin, closely punctate; antennal prominence with strong and broad U-shaped carina, discontinuous medially, produced over antennal insertions; frons not transversely carinate, rugose-punctate, obscurely sagittally sulcate to near mid ocellus, not depressed; vertex and gena closely punctate. Mesosoma. Pronotum as wide as head, rugose-punctate, anterior margin emarginate, raised, weakly carinate, produced laterally; mesoscutum rugose-punctate; tegulae closely punctate basally; mesoscutellum closely punctate, convex, subtriangular, rounded posteriorly; metanotum closely punctate, below level of mesoscutellum; propodeum oblique 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; S1–7 closely punctate; gradulus curved and scrobiculate on T2, straight and scrobiculate on T3–5 and S3–5, straight and punctate on T6, weakly curved and punctate on S6, punctate and curved towards posterior margin on S7; T1 oblique anteriorly, not tuberculate; S1 broadly raised, anterior V-shaped carina weakly produced ventrally; S2 not tuberculate; epipygium emarginate posteriorly; hypopygium without basal angles; cuspis short; paracuspis long and angulate. Length. Body 11 mm; fore wing 8 mm; hind wing 5 mm. Female. Unknown. Distribution. North-western Australia. The exact locality is unknown. Etymology. The specific name is derived from Latin and refers to the similarity in the structure of the male clypeal carina between this species and Ry. cornutus Turner. Material examined. Western Australia: holotype. ɗ NW Australia (ANIC).

Published as part of Brown, Graham, 2008, Umbothynnus, a newly recognised genus for the Rhagigaster alexius Guérin group of species (Hymenoptera: Tiphiidae: Thynninae: Rhagigasterini) from northern Australia, pp. 43-58 in Zootaxa 1933 on pages 53-54, DOI: 10.5281/zenodo.184893