Review of Brazilian species of Syneches Walker (Diptera, Hybotidae, Hybotinae), with description of ten new species Author Soares, Matheus M. M. 0000-0002-2355-1441 matheusmmsoares@gmail.com Author Freitas-Silva, Rafael A. P. 0000-0002-7560-4939 rpfreitas.silva@gmail.com Author Ale-Rocha, Rosaly 0000-0001-9874-9770 alerocha@inpa.gov.br text Zootaxa 2021 2021-10-11 5049 1 1 84 http://dx.doi.org/10.11646/zootaxa.5049.1.1 journal article 3976 10.11646/zootaxa.5049.1.1 5dc17a27-e095-4dc8-b10d-09fc935dbf45 1175-5326 5560580 F9647501-7F6B-4286-AEEE-19B620F697ED Syneches jauensis Ale-Rocha & Vieira ( Figs 25A–E , 50 ) Syneches jauensis Ale-Rocha & Vieira, 2008: 116 , figs 8–14, 37; Menezes & Ale-Rocha, 2016: 420 , fig 119 (key, distr.). Type locality: Parque Nacional do Jaú, Amazonas, Brazil . FIGURE 25. Syneches jauensis Ale-Rocha & Vieira, 2008 . A–D. Holotype male. A. Habitus, lateral view; B. Thorax, lateral view; C. Head, lateral view; D. Hind leg, anterior view. E. Paratype (male from type-locality). Wing. Diagnosis. Medium size ( 3.6 mm ) ( Fig. 25A ). Antenna brown ( Fig. 25C ). Scutum rounded, as broad as mesopleuron in lateral view, dark brown ( Fig. 25B ). Legs slender, with coxae, trochanters, fore and mid femora, fore tarsomeres 1–5 dark yellow, mid tibia and mid tarsomeres 1–2 yellow, otherwise brown ( Figs 25A, D ). Wing hyaline, membrane brownish smoky; pterostigma long, oval, 2.5 x longer than wide, brown and fulfilling the apex of cell r 1 ; second section of M 1 longer than crossvein r-m ( Fig. 25E ). Distal margin of hypandrium with one wide and truncate protuberance. Type material examined. HOLOTYPE ♂ ( INPA ) labelled: “ BRASIL , Amazonas , Pq [ Parque ] N [ Nacional ] [do] Jaú , Ig [ Igarapé ] Miratucu , Ig [ Igarapé ] do Gerlei , 01°57′00″S 61°49′00″W , 23–28.vii.1995 ” “Arm [armadilha] Malaise, J.A. Rafael & J. Vidal ” “Holótipo, Syneches jauensis Ale-Rocha & Vieira ” [red label] . Holotype condition: good; not dissected. Distribution. Brazil (Amazonas) ( Fig. 50 ). Syneches jauensis is known only from the Amazon biome. Remarks. Syneches jauensis differs from all other Brazilian species of Syneches by the slender and predominantly dark yellow to brown legs, pterostigma filling the apex of cell r 1 and distal margin of the hypandrium with one wide and truncate protuberance.