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 curvipes (Fabricius) ( Figs 1A , 15A–E , 52 ) Damalis curvipes Fabricius, 1805: 147 . Hybos curvipes : Wiedemann, 1828: 415 . Damalis quadricinctus Fabricius, 1805: 148 . Hybos quadricinctus : Wiedemann, 1828: 415 . Syneches quadricinctus : Bezzi, 1909: 314 (key); Smith, 1967: 10 (cat.); Yang et al ., 2007: 313 (cat.); Menezes & Ale-Rocha, 2016: 413–415 (syn.). Syneches curvipes : Bezzi, 1909: 314 (key); Collin, 1933: 28 (cit.); Smith, 1962: 212 (cit.); 1967: 9 (cat.); Yang et al ., 2007: 307 (cat.); Menezes & Ale-Rocha, 2016: 413–415 , figs 33–39, 107, 119 (rev., Brazil ). Type locality: America Meridional. Diagnosis. Large size (6.0 mm) ( Figs 1A , 15A ). Antenna dark brown ( Figs 1A , 15C ); palpus and proboscis brown to dark brown ( Figs 1A , 15C ). Prosternum fused to proepisternum; scutum rounded, as broad as mesopleuron in lateral view, orange yellow to brown, covered with golden pruinescence, except dorsocentral stripe with gray pruinescence ( Figs 1A , 15B ). Abdomen dark brown, except tergite 1 and lateral of tergites 2–4 yellow to pale brown ( Figs 1A , 15A ). Legs yellow to pale brown, except fore and hind tibiae and all tarsomeres 5 brown to dark brown, hind femur yellow to brownish on basal half, strongly swollen with 1AV series of spiniform bristles inserted on short tubercles ( Figs 1A , 15D ). Wing hyaline, greyish; pterostigma long, oval, brown near base fading off apically; second section of M 1 longer than crossvein r-m; both cells br and bm longer than cell cua ( Fig. 15E ). Material examined. BRAZIL . Amapá : Calçoene , Balneário Asa Aberta , 02°31′072″N 50°58′16.8″W , Malaise , 17–18.iv.2014 , J.T. Câmara & J.A. Rafael ( 1 ♂ , 1 ♀ , INPA ) ; idem , Ig. Asa Aberta , Varredura , 17.iv.2014 ( 1 ♂ , 2 ♀ , INPA ) ; Serra do Navio , Estr. Cach. Pedra Preta , 00°53′39.2″N 52°00′41.9″W , Malaise , 14–16.iv.2014 , J.T. Câmara & J.A. Rafael ( 1 ♀ , INPA ) . Pará , Rio Nhamundá , 01°35′11″S 57°37′32″W , Syneches curvipes (Fabricius) Det. Ale-Rocha , 1999 ( 1 ♀ , INPA ) . Distribution. Brazil ( Amapá *, Amazonas and Pará) ( Fig. 52 ); Guyana . Syneches curvipes is known to occurr only in the Amazon biome. Remarks. This species is remarkably similar to S. catarinae , but it can be separated by the characters given in the key (see also “Remarks” under S. catarinae ). A female specimen of S . curvipes was photographed resting on the vegetation in Guyana ( Fig. 1 ), showing the typical sitting and waiting hunting behavior of many hybotid flies [see Wilder (1974) for Nearctic Syneches species and Jaume-Schinkel et al . (2020) for the genus Chvalaea ( Hybotidae : Ocydromiinae )].