Hydrellia Robineau-Desvoidy (Diptera: Ephydridae) from Brazil with an emphasis on the faunas from the states of Parana and Rio de Janeiro Author Júnior, Francisco De Assis Rodrigues Author Mathis, Wayne Nielsen Author Couri, Márcia Souto text Zootaxa 2014 3753 6 501 541 journal article 46702 10.11646/zootaxa.3753.6.1 1a98fffc-6dba-4b7c-bda4-ce0552bb609d 1175-5326 226733 4DFE4D2F-22B6-45CE-9A21-AB4A43FC7B6F Hydrellia bocaiuvensis sp. nov. (Figs.: 2, 18.1–18.7, 19.1–19.3 and 20.1) Diagnosis. Body length of male 1.86–1.92 mm , female 1.96–2.30 mm ; frons broader than high; densely microtomentose, velvety black; both proclinate and reclinate fronto-orbital setae present; first flagellomere dark brown dorsoapically, orange yellow ventrobasally; 6–8 aristal rays; maxillary palpus yellow (fig. 20.1); mesonotum dark brown, densely microtomentose over black, subshiny; scutellum velvety black, except for marginal lateral and apical area; well-developed dorsocentral setae 0+1; 3 scutellar setae; pleurae mostly brownish dorsally until notopleuron, and grayish from anepisternum to katepisternum; posterior margin of notopleuron and adjacent area of supra-alar densely microtomentose, velvety black (fig. 20.1); tarsi mostly orange yellow, except for dark brown apical tarsomeres 4 and 5; sternite 5 deeply concave and congruent with distiphallus; surstylus broader than high, concave anteriorly (figs. 18.1 and 18.7). FIGURE 18.1–18.7. Structures of the male terminalia of H. bocaiuvensis sp. nov. : 18.1) male terminalia, ventral view; 18.2) fifth sternite and fused hypandrium, gonite and postsurstylus, ventral view; 18.3) aedeagus, ventral view; 18.4) aedeagus, lateral view; 18.5) phallapodeme, ventral view; 18.6) phallapodeme, lateral view; 18.7) surstylus, ventral view. Scale bars = 0.1 mm. FIGURE 19.1–19.3. Female terminalia of H. bocaiuvensis sp. nov. : 19.1) female terminalia, ventral view; 19.2) female terminalia, lateral view; 19.3) ventral receptacle, ventrolateral view. Scale bars = 0.1 mm. FIGURE 20.1–20.6. 20.1) H. bocaiuvensis sp. nov. (male, profile) from Bocaiúva do Sul, Paraná; 20.2) H. longiseta sp. nov. (female, profile) from Castro, Paraná; 20.3) H. vilelai sp. nov. (male, profile) from Bocaiúva do Sul, Paraná; 20.4) H. simplex (holotype, male), profile; 20.5) H. similis (holotype, male), profile; 20.6) H. similis (holotype, male), profile of thorax and head, in detail ctenidial setae along anteroventral margin of forefemur. Description. Head: frons broader than high; densely microtomentose, velvety black; ocellar triangle grayish brown microtomentose, subshiny; both proclinate and reclinate fronto-orbital setae present, with a third smaller setula between them; ocellar setae absent; scape dark brown; pedicel black, grayish microtomentose anteriorly; pedicel with 1 small dorsal seta; pedicel with 2–3 ventral hair like setulae; first flagellomere dark brown dorsoapically, orange yellow ventrobasally; 6–8 aristal rays; lunule silver to golden silver; face silver, sparsely golden microtomentose medially, in lateral view nearly vertical, but with antennal grooves distinct; facial setae 4– 6, usually with 1–2 minute shallowly declinate dorsal secondary facial setulae; parafacial narrow, usually concolorous with genal groove; genal groove black; 1 genal seta; gena, postgena and occiput grayish brown microtomentose; maxillary palpus yellow (fig. 20.1), spatulate, with 3 setulae; epistomal ratio: 1.31–1.43; mesofacial ratio: 1.91–2.05; vertex ratio: 8.56–9.65; eye-to-gena ratio: 4.98–5.47; head ratio: 1.32–1.35. Thorax: mesonotum dark brown over black, densely microtomentose, subshiny; scutellum velvety black, except for marginal lateral and apical area; well-developed dorsocentral setae 0+1; 1 postpronotal seta; 3 scutellar setae, mid pair weakly developed; thorax in lateral view mostly brownish dorsally, until notopleuron, and grayish from anepisternum to katepisternum; posterior margin of notopleuron and adjacent area of supra-alar densely microtomentose, velvety black (fig. 20.1); 1 anepisternal seta well developed; 1 mesokatepisternal seta. Wings: length 2.08–2.35 mm ; hyaline with pale brown venation; knob of halter fluorescent yellow to pale yellow, stem orange; costal sections indices: II/I: 2.39–2.59; III/IV: 3.23 –3.71; V/IV: 3.32–3.72; vein M ratio: 3.67–4.03. Legs: coxae and femora concolorous with pleural areas; joints orange yellow; fore tibiae orange yellow; mid and hind tibiae grayish brown microtomentose medially; ctenidial setae along anteroventral margin of forefemur minute; tarsi mostly orange yellow, except for dark brown apical tarsomeres 4 and 5. Abdomen: grayish brown over black, densely microtomentose, subshiny. Male terminalia: sternite 5 deeply concave and congruent with distiphallus (figs. 18.1 and 18.2); surstylus broader than high, concave anteriorly (figs. 18.1 and 18.7); postgonite bent anteromedially (figs. 18.1 and 18.2); pregonite comparatively narrow, bifurcated, each lobe bearing 1 setula (figs. 18.1 and 18.2); postsurstylus broad (figs. 18.1 and 18.2); aedeagus in ventral view fusiform (fig. 18.3); phallapodeme in ventral view narrow (fig. 18.5), bifurcated in both sides; epandrium narrow (fig. 18.1). Female terminalia: tergite 7 twice smaller than tergite 6 (fig. 19.2); tergites 7–8 mostly retracted within tergite 6 (fig. 19.2); cercus in lateral view rounded; sternites subequal, roundly quadrate (fig. 19.1); tergite 8 in lateral view rounded medially, uniformly microsetulose (fig. 19.1); ventral receptacle with a cap cupuliform, about 1.5 higher than broad (fig. 19.3). Material examined. Holotype male ( MNRJ ): “ Brazil , Paraná, Bocaiúva do Sul ( 25°14.9'S , 49°8.9'W ; 890 m ), 2–4.Nov.2010 , D. and W. N. Mathis”. Paratypes : labelled the same as holotype ( 22 male , 27 female ; MNRJ , USNM ). Distribution. Neotropical: Brazil (Paraná) Etymology. The specific epithet, bocaiuvensis , refers to the type-locality Bocaiúva do Sul, Paraná, Brazil . Notes. Hydrellia bocaiuvensis sp. nov. is morphologically very similar to H. xanthocera . Both species belong to the formosa species group. They can be distinguished by the ground color, number of scutellar setae and shape of the phallapodeme.