Two new species of Setostylus Matile, 1990 (Diptera: Keroplatidae) from China Author Qi, Lei 0000-0001-6548-1288 National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, Zhejiang A & F University, 666 Wusu Street, Lin’an, Hangzhou, Zhejiang 311300, China & https: // orcid. org / 0000 - 0001 - 6548 - 1288 Author Huang, Junhao 0000-0002-5038-3535 National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, Zhejiang A & F University, 666 Wusu Street, Lin’an, Hangzhou, Zhejiang 311300, China & https: // orcid. org / 0000 - 0002 - 5038 - 3535 Author Wu, Hong 0000-0001-5542-5370 National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, Zhejiang A & F University, 666 Wusu Street, Lin’an, Hangzhou, Zhejiang 311300, China & https: // orcid. org / 0000 - 0001 - 5542 - 5370 Author Wang, Qingyun National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, Zhejiang A & F University, 666 Wusu Street, Lin’an, Hangzhou, Zhejiang 311300, China text Zootaxa 2022 2022-07-15 5165 3 443 450 journal article 99296 10.11646/zootaxa.5165.3.9 fdae12be-c8b4-48db-826e-0405703b8b94 1175-5326 6838620 F03004BE-1238-4E72-A7EC-3E20ED7EEE76 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]