Revision of the Neotropical genus Coroichlorops Paganelli 2002 (Diptera: Chloropidae) Author Riccardi, Paula Raile Author Amorim, Dalton De Souza text Zootaxa 2016 4093 3 435 443 journal article 10.11646/zootaxa.4093.3.9 4b1bbfab-6a3b-46ad-8279-7d1097d8c08f 1175-5326 262631 5DF9ECED-600B-4826-B7EC-4D99CD6485AC Coroichlorops antennatus sp. nov. ( Figs. 10–16 ) Diagnosis. First flagellomere reniform, with an elongate sensorial pit; arista flat; scutum with five orange, clearly distinguishable stripes; gonites not fused, with 2 pairs of setae; bacilliform sclerite wide. Material examined. Holotype ♂, Brazil , State of Pará, Jacarecanga; xii.1968 ; M. Alvarenga leg. [MZUSP] (abdomen and right wing prepared). Paratype : 1 ♀, same data as holotype [MZUSP]. Description. Body length, 4.8–5.4 mm . Wing length, 3.0 mm. Background color, pale yellow. FIGURES 10–14. Coroichlorops antennatus , sp. nov. . 10. Habitus (holotype). 11. Head, dorsal view (holotype). 12–13. Antenna (paratype). 14. Wing (holotype). Scale bar, 1 mm. Head ( Figs. 10–13 ). Wider than thorax, broader than long dorsally, longer than high in profile; frons slightly projected forward; shiny yellow ocellar triangle, almost reaching frons apex, brownish at posterior half, narrow, no groove; occiput slightly darkened, pilose; gena less than half first flagellomere height, inner margin straight; postgena short; parafacialia not visible in profile; eyes bare, large, rounded; facial carina thin, shallow, incomplete; clypeus dark brown; labella reduced, yellow; palpus cylindrical, yellow; pedicel dorsal margin wider than ventral margin; first flagellomere reniform, dark yellow, with an elongate sensorial pit; arista dark, flat, sword-like, with dark short spaced hairs. Chaetotaxy: 6 short orbitals, almost indistinct; 7 interfrontals outside ocellar triangle; inner and outer verticals well developed; ocellars and postocellars not observed (broken); vibrissa thin; gena with few pale hairs. Thorax ( Fig. 10 ). Scutum length/width ratio 1.6, five orange stripes, a mesal dark orange longitudinal line present, and a small lateral orange spot more or less distinguishable, subshiny, flattened dorsally, dark pilosity inserted on rounded punctures; postpronotum with a blackish spot, and 1 postpronotal developed seta; scutellum rounded apically, not flattened, with regular apical setae; pleura shiny, with no dark spots; 1+2 notopleurals; 1 pair of dorsocentrals; postalar and intrapostalar not observed (probably broken); halter yellow with light yellow apex. Legs. Yellow; fore femur with 1 to 2 long hairs laterally; tibial organ short, narrow, concolorous with leg; tarsomeres of mid and hind leg darkened apically. Wing ( Fig. 14 ). Membrane hyaline; costal sectors 1-2-3-4: 30- 41 -20-5; R4+5 straight; R4+5 and M1+2 parallel; distance between r-m and dm-cu 6 times r-m length; transversal veins placed on basal half of wing. Abdomen. Five tergites fully sclerotized, dark yellow. Male terminalia ( Figs. 15- 16 ). Epandrium large, rounded; proctiger sclerotized, well delimited; mesolobus (fused cerci) long, narrow, rectangular; bacilliform sclerite wide, placed under mesolobus; surstylus forceps-shaped, no microtrichiae, prolonged arm attached to epandrium laterally to mesolobus, directed basally, a beak at tip; hypandrium with two basal, rounded projections, arms long, apex with internal projection moderate, external projection short; pre- and postgonites in line, not fused, postgonite with 2 pairs of setae and sensorial pores; basiphallus oval; distiphallus short; phallapodeme short, bifid at posterior half; epiphallus, longer than basiphallus, thin, weakly sclerotized. Female terminalia . Cercus short, yellow. Etymology. The specific epithet of the species name comes from the Latin word antenna , as a reference to the wide arista. Comments . The lateral margins of the ocellar triangle are relatively straight, diverging from the drop-shape condition seen in the other species of Coroichlorops . The most aberrant characteristic of C. antennatus , however, is the flat wide arista. A long sensorial pit on the first flagellomere is a feature shared between C. antennatus and C. yungas . The arista of the holotype of C. antennatus is broken and only with the most basal aristomere present, so the description of the arista was based on the paratype .