Review of the Neotropical genus Pseudosympycnus (Diptera: Dolichopodidae) with description of six new species from Brazil and Peru Author Soares, Matheus M. M. Graduate Program in Entomology (PPG-Ent), Instituto Nacional de Pesquisas da Amazônia (INPA), Av. André Araújo, 2936, Petrópolis, CEP 69067 - 375, Manaus, Amazonas, Brazil Author Capellari, Renato S. Instituto Federal do Triângulo Mineiro, Campus Uberaba, Rua João Batista Ribeiro 4000, Distrito Industrial II, Uberaba, Minas Gerais 38064 - 790, Brazil. https: // orcid. org / 0000 - 0002 - 8410 - 9235 text Zootaxa 2020 2020-11-19 4881 2 231 256 journal article 9538 10.11646/zootaxa.4881.2.2 db9f4a85-0168-4ef9-a25b-1137474e86e8 1175-5326 4283617 F6E84334-C578-4AF1-AF62-5E31DDA7DF8E Identification key to species of Pseudosympycnus (males) (Females are not confidently associated to males at this stage and hence were not included in the present key). 1 Palpus as long as head height ( Figs 26–27 ); tibia I compressed, white, except ventral surface yellow ( Fig. 70 ) [ Brazil : Minas Gerais , Rio de Janeiro and S„o Paulo]....................................................... P . latitibia sp. nov. - Palpus shorter than head height, about 1/3 to 2/3 as head height (e.g., Figs 16–19 ); tibia I not compressed (or only thicker than tibiae II and III), mostly yellow or brown, never white ( Figs 11 , 40–41 ).......................................... 2 2 It 1 compressed and trapezoidal, with dorsal crest bearing fringe of setae increasing in size towards apex ( Figs 41 , 58 ); It 2 with dorsal projection, and apical crest bearing long setae ( Figs 41 , 58 ); tibia II with anteroventral row of erect short setae (as long as diameter of tibia) extending to IIt 1 ( Fig. 69 ) [ Dominica ]................................... P. perornatus Robinson - It 1 cylindrical or nearly so ( Figs 40 , 42, 44 ), sometimes with dorsal row of setae, but never with crest bearing fringe of setae; It 2 without dorsal projection or apical crest bearing long setae ( Fig. 40 ); tibia II without anteroventral row of erect short setae... ................................................................................................... 3 3 It 2 with 1 anteroventrally curved seta near base; It 3 compressed with dorsal rows of slender setae ( Robinson 1967 , fig. 10); IIIt 3 triangular, with apical projection overlapping base of IIIt 4 and with cluster of apical setae ( Robinson 1967 , fig. 11) [ Mexico ]..................................................................................... P. bicolor Robinson - It 2 without anteroventrally curved seta near base; It 3 cylindrical or laterally flattened, without dorsal rows of slender setae ( Figs 40 , 42 ); IIIt 3 cylindrical, without apical projection ( Figs 43, 46 )................................................. 4 4 It 4–5 entirely white or covered by dense whitish pubescence on anterior surface ( Figs 44, 49, 53 , 55, 56 )................. 5 - It 4–5 entirely brown, without whitish pubescence on anterior surface ( Figs 42, 47 )................................... 8 5 Palpus largely transparent ( Figs 28, 29 ); metepimeron brown ( Fig. 6 ); tarsus I cylindrical or nearly so, It 2 with 1 long dorsal seta at apex, longer than segment ( Fig. 53 ); femur III mostly yellow, but apical 1/5 brown ( Fig. 6 ) [ Brazil : Amazonas].............................................................................................. P. maroaga sp. nov. - Palpus opaque (e.g., Figs 18, 19 ); metepimeron yellow ( Fig. 2 ); tarsus I with flattened segments or overlapping projections ( Figs 44, 49 , 55, 56 ); femur III entirely yellow.............................................................. 6 6 It 4–5 (sometimes also It 3 ) laterally flattened, brown, and covered by dense whitish pubescence on anterior surface ( Figs 55, 56 ); It 3 as long as It 1, without projection overlapping base of It 4 ( Fig. 7 ); IIIt 3–4 with row of setae decreasing in size towards apex ( Fig. 57 ) [ Brazil : Acre , Amazonas; Panama ].................................................. P . palpiger (Van Duzee) - It 4–5 not entirely flattened as above, white, but never covered by dense whitish pubescence on anterior surface ( Figs 44, 49 ); It 3 2–3x times shorter than It 1, with projection overlapping base of It 4 ( Figs 44, 49 ); IIIt 3 with 4 posterior setae longer than tarsomere ( Figs 46, 50 )..................................................................................... 7 7 Femur I yellow, with 1 conspicuous ventral seta near basal fourth, almost as long as half of femur length ( Fig. 66 ); femur III with 3 ventral setae near base; It 3 dark brown, with dorsal row of curved setae ( Fig. 44 ); IIt 5 white ( Fig. 45 ) [ Peru ]................................................................................................ P. araza sp. nov. - Femur I brownish, without conspicuous, long ventral seta at basal fourth (e.g., Fig. 41 ); femur III with ventral row of 7–8 fine setae on basal half ( Fig. 67 ); It 3 white, without dorsal row of curved setae ( Fig. 49 ); IIt 5 dark brown [ Brazil : Acre , Amapá and Pará ].................................................................................. P. latipes (Parent) 8 Femur I brown ( Fig. 11 ); It 2 without long dorsal bristle at apex ( Fig. 64 ); It 3 subtriangular, projecting dorsally and overlapping base of It 4 ( Fig. 64 ); It 4 2 times as long as It 5 and cylindrical ( Fig. 64 ) [ Colombia : Gorgona Island; Belize ]................................................................................................... P. singularis (Parent) - Femur I yellow (e.g., Fig. 7 ); It 2 with 1–2 long dorsal bristles at apex, as long as tarsomere ( Figs 40 , 47, 51 ); It 3 not subtriangular and not projecting dorsally over base of It 4 ( Figs 40 , 47 ); It 4 usually as long as It 5 (if It 4 longer than It 5 , then It 4 laterally flattened)............................................................................................ 9 9 Metepimeron yellow; femur I without row conspicuous ventral setae (e.g., Fig. 41 ); It 2 with 2 dorsal bristles at apex ( Figs 42, 51 ); It 3–4 or It 4–5 conspicuously flattened ( Figs 42 , 60 ); IIIt 3–5 with posterior and posteroventral rows of long, slightly curved setae ( Figs 43 , 61 ).................................................................................... 10 - Metepimeron light brown to brown; femur I with row of conspicuous ventral setae ( Figs 40 , 68 ); It 2 with 1 dorsal bristle at apex ( Figs 47 , 62 ); It 3–5 cylindrical; IIIt 3–5 without posterior and posteroventral rows of setae ( Figs 48 , 63 ).................. 11 10 It 3 twice length of It 4 ( Fig. 42 ); It 3 cylindrical ( Fig. 42 ); femur III without ventral row of long setae ( Fig. 1 ) [ Brazil : Amapá , Pará ]............................................................................... P. albipalpus (Parent) - It 3 shorter than It 4 ( Fig. 60 ); It 3 laterally flattened ( Fig. 60 ); femur III with ventral row of 3 setae on basal half, basal two short and curved at apex, apical one longer, twice diameter of femur at broadest point ( Fig. 71 ) [ Brazil : Acre ]..................................................................................................... P. robinsoni sp. nov. 11 It 1 without row of anterior setae; It 2 with 1 sinuous bristle at apex ( Fig. 62 ); It 3 with anterior surface mostly bare, with anterior comb of short setae at apex; distal half of femur III darkened ( Fig. 10 ); tibiae II and III brown ( Fig. 10 ); IIIt 4 unmodified [ Brazil : Amazonas]............................................................................ P . sehnali sp. nov. - It 1 with one anterior row of slightly curved setae, which extends to It 2; It 2 with 1 hook-like bristle at apex; It 3 with anterior surface setose and without comb of short setae at apex ( Fig. 47 ); femur III darkened only at apex ( Fig. 3 ); tibiae II and III dark yellow ( Fig. 3 ); IIIt 4 slightly excavated at ventral surface ( Fig. 48 ) [ Brazil : Roraima , Pará ].............. P . bickeli sp. nov.