Revision of the Neotropical genus Neoscutops Malloch (Diptera: Periscelididae) Author Ale-Rocha, Rosaly Author Freitas, Geovânia text Zootaxa 2011 3016 1 28 journal article 46401 10.5281/zenodo.200588 708fef6e-9b09-47e8-9b36-4dd3cbaa2859 1175-5326 200588 Neoscutops luteus sp. nov. ( Figs. 16–19 , 54 , 65 ) Diagnosis. Frons yellow; face yellow with dark brown spot on each low corner; palpus yellow with dark brown apex; scutum yellow and scutellum brown; legs yellow except fore coxa with anterior surface brown, fore and mid tibia with apical 1/3 black, hind tibiae with a brown spot apically, and tarsi whitish-yellow. Description. Holotype male . Body: 3.5 mm . Wing: 2.8. Thorax: 1.4. Head ( Fig. 65 ). Frons shiny yellow. Face shiny yellow except for large dark brown spot on each low corner; face with very fine, short yellow setae. Parafacial yellow. Gena pale yellow with dense yellow microtomentum and short, fine yellow setae. Antenna: scape and pedicel black, pedicel with short brown setae; first flagellomere yellow, elongate-ovate, darker dorsally; arista pale brown with 10 dorsal and 5 ventral rays. Mouthparts: proboscis pale brown; palpus yellow with brown apex, long, about 5 times longer than wide, with rounded apex and brown setae; clypeus yellow, bulged. Postcranium yellow with very sparse thin yellow setae and fine, sparse, pale microtomentum, without band of dense microtomentum. Eyes with interfacetal setae few, inconspicuous, very short and fine. Setae: 1 lateral and 1 medial vertical pairs, lateral pair shorter than medial pair; 1 orbital pair inserted at half length of frons, shorter than vertical pair; 1 short postocellar pair, divergent; ocellar triangle with 1 pair slightly robust and slightly convergent, and few slender short setae; all setae pale brown. Thorax. Scutum shiny yellow, clothed in dense fine yellow setae. Scutellum and subscutellum dark brown, with sparse pale microtomentum. Pleurae yellow except for katepisternum and lower half of anepisternum dark brown, with dense pale microtomentum except for shiny bare area that extends from lower half of anepisternum to upper half of katepisternum. Setae: 1 postpronotal short and fine, 2 notopleural, 1 postsutural supra-alar, 1 postalar and 1 dorsocentral prescutellar longer and robust than prostpronotal; scutellum with 2 long, robust and convergent lateral pairs; 2 elongate setae on upper posterior margin of katepisternum and few short slender setae below; all setae brown. Legs yellow except fore coxa with anterior surface brown, fore and mid tibia with apical 1/3 black, hind tibiae with a brown spot apically and tarsi whitish-yellow. Fore femur with short black spines on posteroventral surface; mid tarsus with short black anteroventral spines on tarsomeres 1-3. Black apicoventral spine of mid tibia robust, short, not reaching middle of first tarsomere. Wing ( Fig. 54 ): pale brown, darker on costal margin and base; the longitudinal fold crosses the dm-cu vein above middle. Abdomen brown, clothed with short thin yellow setae on dorsum and longer, pale brown setae laterally; with pale brown microtomentum. Tergite 1+2 divided longitudinally from base to middle by an unsclerotized median line widened distally; sternite 6 sclerotized only laterally ( Fig. 19 ); tergite 6 free from syntergosternite 7+8. Terminalia: phallus short, slender ( Fig. 16 ); cercus wide, closely approximated ( Fig. 17 ); postgonites short; ejaculatory apodeme as in Figure 18 . Female . As in the male except for: fore coxa totally yellow; first flagellomere darkened and serie of setae on anteroventral surface of fore femur slender. Not dissected. Type material. Holotype 3 ( USNM ). ECUADOR , Orellana , Lot#2062 / Tiputini Biodiversity Station / nr Yasuni National Park, 220-250m / 6.II.99 , T.L. Erwin et al / 0037'55" S, 7608'39" W. Condition of holotype : left wing mounted between cover slides; dissected abdomen. Paratype Ƥ ( INPA ). BRASIL , Amazonas , Ipixuna, Rio Gregório, Comunidade Lago Grande, 0710'11.7"S- 7049'10.3"W, 18–32. v.2011 , Varredura, J.A. Rafael, R.F. Silva, A. Somavilla, R. Ale-Rocha cols. Distribution. Ecuador (Orellana), Brazil (Amazonas). Etymology. From Latin luteus = yellow, referring to the yellow coloration of the scutum.