Umbothynnus webbiensis, 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 : 55-56

Umbothynnus webbiensis , New Species

( Figs 1–4, 11 , 36–38 )

Diagnosis. Male. Integument black; wing infuscate. Apical margin of clypeus weakly emarginate; T7 with truncated V-shaped carina, posterolateral angles of which are prominent and raised. Similar to U. alexius , U. bertholetiensis and U. borrolooliensis but these three species have the clypeus strongly emarginate.

Head. Not emarginate posteriorly, not strongly narrowed behind eyes; clypeus weakly emarginate, convex, sagittally carinate, strongly depressed between carina and apical margin closely punctate; antennal prominence with strong, broad V-shaped carina, discontinuous medially, produced below carina to antennal insertions; frons not transversely carinate, rugose-punctate, obscurely sagittally sulcate to near mid ocellus, not depressed; vertex closely punctate, impunctate posterolateral to hind ocelli; gena closely punctate.

Mesososma. Pronotum narrower than head, rugose-punctate, anterior margin straight, not raised, not carinate, not produced laterally; mesoscutum rugose-punctate; tegulae closely punctate basally; mesoscutellum rugose-punctate, convex, subtriangular, narrowly rounded posteriorly; metanotum closely punctate, below level of mesoscutellum; propodeum oblique posteriorly, not transversely carinate, deeply and closely punctate; fore coxae closely and finely punctate; mesopleura deeply and closely punctate to rugose-punctate.

Metasoma. Elongate fusiform; T1–6 closely punctate, T2–5 sparsely punctate posteriorly; S1 rugosepunctate, S2–7 closely punctate; gradulus straight and scrobiculate on T3–5 and S3–5, straight and punctate on T6, weak and punctate on S6, obscure on S7; T1 oblique anteriorly, not tuberculate; S1 broadly raised, anterior V-shaped carina weakly produced ventrally; S2 not tuberculate; epipygium truncate posteriorly; hypopygium with obtuse basal angles; cuspis short; paracuspis of medium length.

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

Female. Unknown.

Distribution. Coastal north-eastern Queensland near Mt Webb.

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

Material examined. Queensland: holotype. ɗ 3 km NE of Mt Webb, 15o 03'S, 145o 09'E, 1-30.x.1980, J.C. Cardale ( ANIC): paratypes: 36ɗ same data as holotype ( ANIC, NTM).

Figures

FIGURES 1 – 2. Umbothynnus webbiensis, male: 1. habitus; 2. antennal prominence, anterodorsal view, arrows orientated vertically on frons and pointing to curved projections of antennal prominence ventrally.

FIGURES 4 – 11. Umbothynnus spp., male epipygia: 4. U. alexius; 5. U. bertholetiensis; 6. U. borrolooliensis; 7. U. infuscatus; 8. U. katherinensis; 9. U. subcornutus; 10. U. subspinosus; 11. U. webbiensis. Scale line = 0.5 mm.

FIGURES 36 – 38. Umbothynnus webbiensis male: 36. hypopygium; 37. genitalia. lateral; 38. genitalia, dorsal. Scale line = 0.5 mm.