Umbothynnus
Creators: name: Brown, Graham
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Tiphiidae
Umbothynnus

description: Key to the males of Umbothynnus
1 Lateral carinae on T7 straight and slightly convergent then abruptly incurved, convergent and almost confluent but strongly curved and directed posteriorly (fig. 10); pronotum sparsely punctate ................. .................................................................................................................................. subspinosus, sp. nov.
- Lateral carinae on T7 otherwise, not strongly convergent and almost confluent posteriorly, not curved and directed posteriorly (figs 4–9, 11); pronotum punctate to rugose-punctate.......................................2
2(1) Clypeus strongly and broadly carinate, carina produced and tuberculate over apical margin of clypeus. .................................................................................................................................. subcornutus, sp. nov.
- Clypeal carina not produced over apical margin of clypeus, and not tuberculate .................................. 3
3(2) T7 subapically carinate; lateral margins of parameres strongly convergent posteriorly (fig. 7) ............... ..................................................................................................................................... infuscatus, sp. nov.
- T7 not subapically carinate; lateral margins of parameres not strongly convergent posteriorly ............ 4
4(3) Clypeus truncate or weakly emarginate .................................................................................................. 5
- Clypeus narrowly and strongly emarginate ............................................................................................. 6
5(4) T7 not raised and angulate posterolaterally (fig. 8); basiparameres each rounded apically (fig. 29) ........ ................................................................................................................................ katherinensis, sp. nov.
- T7 raised and angulate posterolaterally (fig. 11); basiparameres acute apically (fig. 38) ......................... .................................................................................................................................... webbiensis, sp. nov.
6(4) Posterior angles of T7 flat, not upturned (fig. 4); apices of basiparameres digitate (fig. 14) .................... .......................................................................................................................................... alexius (Turner)
- Posterior angles of T7 upturned forming a concave area (figs 5–6); apices of basiparameres broad or incurved, not digitate (figs 20, 23) ......................................................................................................... 7
7(6) Apex of T7 (as defined by its concavity) wider than long, posterior angles not spinose (fig. 5); apices of basiparameres incurved (fig. 20) ......................................................................... bertholetiensis, sp. nov.
- Apex of T7 longer than wide, posterior angles obtusely spinose (fig. 6); apices of basiparameres not incurved (fig. 23) .............................................................................................. borrolooliensis, sp. nov.
description: 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 45-46, DOI: 10.5281/zenodo.184893