Setostylus Matile 1990
Creators: name: Qi, Lei
name: Huang, Junhao
name: Wu, Hong
name: Wang, Qingyun
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Keroplatidae
Setostylus

description: Key to the species of Setostylus (based on male adults)
1. Two ocelli.......................................................................................... 2
- Three ocelli......................................................................................... 3
2. Flagellomere 14 with an antennal apicule; gonocoxites with anterior margin not emarginated (Matile 1990: Fig. 919)............................................................................... S. singularis (Lane) [Neotropical]
- Flagellomere 14 without an antennal apicule; gonocoxites with anterior margin distinctly emarginated (Matile 1990: Fig. 922)............................................................................ S. bifidus Matile [Neotropical]
3. Wing without pattern.................................................................................. 4
- Wing with distinct patterns............................................................................. 9
4. Scutellum without bristles.............................................................................. 5
- Scutellum covered with bristles.......................................................................... 6
5. Tergite 9 longer than wide (Matile 1990: Fig. 936); tarsus I 1.5 times longer than the tibia. S. rufobrunneus Matile [Oriental]
- Tergite 9 wider than long (Matile 1990: Fig. 937); tarsus I 2.5 times longer than the tibia..... S. bispinosus Matile [Oriental]
6. Scutum with pattern................................................................................... 7
- Scutum without pattern; flagellomere 14 cordiform apically (Papp et al. 2006)................ S. alienus Papp [Oriental]
7. Scutum with two stripes............................................................................... 8
- Scutum with three stripes; tergite 9 subpentagonal (Fig. 2).............................. S. tridigitus sp. n. [Oriental]
8. Scape and pedicel dark brown; palpus brown; tergites 2–4 somewhat transparent (Fig. 4)...... S. triumphus sp. n [Oriental]
- Scape and pedicel reddish brown; palpus reddish brown; tergites 2–4 with a large yellow basal spot on both sides (Matile 1990)......................................................................... S. stubbsi Matile [Oriental]
9. Posterior margin of tergite 9 emarginated................................................................. 10
- Posterior margin of tergite 9 rounded.................................................................... 11
10. R+M fusion longer than the stem of median fork; gonostylus dorsomedially with a small, semi-transparent, posterodorsallyprojecting tooth (Huerta & Fitzgerald, 2020: Figs 2, 3D)........................ S. xoxo Huerta & Fitzgerald [Nearctic]
- R+M fusion equal to half the stem of median fork; gonostylus dorsomedially without tooth (Matile 1990: Fig. 921)................................................................................ S. pictipennis Matile [Neotropical]
11. Goncoxites with posterior margin emarginated............................................................. 12
- Goncoxites with posterior margin not emarginated, with two submedian tubercles (Ševčík et al. 2021: Fig. 14A)..................................................................... S. fangshuoi Ševčík, Hippa & Burdíková [Oriental]
12. Wing with light brown fumose along costal edge near apex (Huerta & Fitzgerald, 2020)..................................................................................................... S. bellulus (Williston) [Neotropical]
- Wing with light brown fumose along costal edge near anterior apical portion of wing to distinctly marked with brown more broadly............................................................................................ 13
13. Palpus yellow....................................................................................... 14
- Palpus reddish brown; halteres with yellowish stem and black knob (Edwards 1931)...... S. innotatus (Edwards) [Oriental]
14. Costa reaching slightly beyond one-third distance from vein R 4+5 to M 1;gonostylus with a minute projection on dorsoapical part, arcuate projection ventrally (Sasakawa & Tamu 1961: Figs 1–2).......... S. abdominalis (Sasakawa & Tamu) [Palaearctic]
- Costa reaching almost midway between R 4+5 to M 1; gonostylus without projection (Xu et al. 2007: Figs 5 –6).......................................................................... S. chinensis Cao, Evenhuis & Zhou [Palaearctic]
description: Published as part of Qi, Lei, Huang, Junhao, Wu, Hong & Wang, Qingyun, 2022, Two new species of Setostylus Matile, 1990 (Diptera: Keroplatidae) from China, pp. 443-450 in Zootaxa 5165 (3) on pages 448-449, DOI: 10.11646/zootaxa.5165.3.9, http://zenodo.org/record/6838620