Taxonomic revision of the afrotropical genus <i>Megatrigon </i>Johnson, 1898 (Diptera: Syrphidae)

The genus-group taxon Megatrigon Johnson, 1898, stat. nov., is revised and treated as a valid genus within the Merodontini (= Eumerini). Extensive diagnoses are given for the genus and for its three constituent species groups: argenteus group [11 spp.], nivalis group [monotypic], sexfasciatus group [3 spp.]. Five new generic combinations are proposed within Megatrigon: M. argenteus (Walker, 1852) comb. nov., M. flavimarginatus (Hull, 1964) comb. nov., M. jacobi (Hervé-Bazin, 1913) comb. nov., M. nivalis (Hull, 1964) comb. nov. and M. ochreatus (Hull, 1964) comb. nov. All species of the argenteus group are revised and nine new species are described: Megatrigon apiformis sp. nov., M. argentifrons sp. nov., M. argentimaculatus sp. nov., M. cooksoni sp. nov., M. immaculatus sp. nov., M. magnicornis sp. nov., M. natalensis sp. nov., M. sexmaculatus sp. nov., M. tabanoides sp. nov. Within the sexfasciatus group, M. jacobi (Hervé-Bazin, 1913) comb. nov. is treated as a senior synonym of Eumerus connexus Hull, 1964 syn. nov., but no further work is done at the species level due to insufficient material

Iberotelus, a new genus of Therevidae (Diptera) from Spain

[EN] Iberotelus gen. n. is described, the genus being unique among known Palaearctic, Afrotropical and Oriental Therevinae in the possession of a sclerotised paramera! — aedeagal bridge in the male genitalia. I. cinereus sp. n. originating in the Cuenca area of Central Spain, and I. inexpectatus sp. n. from Sierra Nevada, South Spain are described and illustrated.[ES] Se describe un nuevo género, Iberotelus, el único, de los que se conocen de la familia Therevinae en las regiones Paleárctica, Afrotropical y Oriental, que presenta en la genitalia del macho un «puente» esclerotizado entre los parámeros y el edeago. Se describen y figuran dos especies nuevas: I. cinereus n. sp. de Cuenca (Centro de España) y I. inexpectatus n. sp. de Sierra Nevada (Sur de España).Peer reviewe

Figs 1 -5 in Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae)

Figs 1 -5. Antennae of Phycus species of southern Africa. 1. kroeberi (Brauns). 2. niger (Krober). 3. mirabilis Lyneborg. 4. flavus Lyneborg. 5. fulvus Lyneborg. Scale: 0,5 mm.Published as part of Lyneborg, Leif, 1987, Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae), pp. 467-474 in ANNALS OF THE NATAL MUSEUM 28 (2) on page 468, DOI: 10.5281/zenodo.838058

Figs 6-22. Stenogephyra gen. n. 6-21. S in Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae)

Figs 6-22. Stenogephyra gen. n. 6-21. S. torrida sp. n. 6. 7. Male head in frontal view. B. Male antenna. 9. Female antenna. 1O-1B. Male terminaha. 10. Male genitalia in lateral view. 11. Epandrium and cerci in dorsal view. 12. Epandrium, cerci and ventral epandrial sclerite in ventral view. 13. Gonocoxites with gonostyli in ventral view. 14. Left gonocoxite with ~onostylus and aedeagal complex in dorsal view. 15. Right gonocoxite with gonostylus in mterior view. 16. Aedeagus in lateral view. 17. Sternite B. lB. Tergite B. 19-21. Female terminalia. 19. Sternite B. 20. Subgenital plate and vaginal apodeme. 21. Tergite B, tergite 10 and cerci in dorsal view. 22. S. minuta sp. n., male antenna. Scale: 1 mm for 6 and 7,0,5 mm for the rest.Published as part of Lyneborg, Leif, 1987, Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae), pp. 467-474 in ANNALS OF THE NATAL MUSEUM 28 (2) on page 471, DOI: 10.5281/zenodo.838058