Hydrellia bocaiuvensis Júnior, Mathis & Couri, 2014, sp. nov.
Creators: name: Júnior, Francisco De Assis Rodrigues
name: Mathis, Wayne Nielsen
name: Couri, Márcia Souto
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ephydridae
Hydrellia
Hydrellia bocaiuvensis

description: 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).
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.
description: Published as part of Júnior, Francisco De Assis Rodrigues, Mathis, Wayne Nielsen & Couri, Márcia Souto, 2014, Hydrellia Robineau-Desvoidy (Diptera: Ephydridae) from Brazil with an emphasis on the faunas from the states of Parana and Rio de Janeiro, pp. 501-541 in Zootaxa 3753 (6) on pages 524-527, DOI: 10.11646/zootaxa.3753.6.1, http://zenodo.org/record/226733