Hemerodromia carioca , Câmara, Josenir T., Takiya, Daniela M., Plant, Adrian R. & Rafael, José A., 2015

Câmara, Josenir T., Takiya, Daniela M., Plant, Adrian R. & Rafael, José A., 2015, Neotropical Hemerodromia Meigen (Diptera: Empididae), a world of discovery II: New species from Atlantic forest, Brazil, Zootaxa 4028 (2), pp. 197-214: 200-202

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Hemerodromia carioca

sp. nov.

Hemerodromia carioca  sp. nov.

( Figs 8–14View FIGURES 8 – 14)

Diagnosis. Yellow species; fore femur with basiventral denticle; M 2 reduced, weak, appearing as fold ( Fig. 2View FIGURES 1 – 7); cercus slightly bifid at apex and surstylus with strong setae at apex and spine-like setae on inner face ( Figs 12, 14View FIGURES 8 – 14).

Description. Male. Head ( Fig. 8View FIGURES 8 – 14). Dark brown to black, antenna and mouthparts yellow with all setae whitish. Ocellar triangle with 1 pair of proclinate setae; anterior ocellus larger. Eyes iridescent black, very narrowly separated on face which bearing fine reclinate setulae. Frons with 1–2 frontal setulae; 3 pairs of vertical setae contiguous with uniseriate row of postocular setae. Occiput bearing scattered fine hairs. Clypeus with rather dense, short downwardly directed pile. Proboscis slightly curved with setae yellow. Antenna with scape and pedicel bearing distinct, short dorsal setulae; postpedicel about 1.5 X as long as wide, stylus ~ 1.2 X as long as postpedicel. Thorax ( Fig. 8View FIGURES 8 – 14). Elongate, slightly arched ventrally; thoracic dorsum yellow, except brownish on prothoracic collar, narrowly behind postpronotal lobe, katepisternum ventrally behind C 1, and mediotergite; antepronotum with anterior margin almost straight and scutum with yellow setae, very small and fine except one notopleural. Legs ( Fig. 8View FIGURES 8 – 14). Whitish yellow. C 1 ~ 1.2 X longer than distance between C 1 and C2, 6X as long as wide with few pale dorsoapical setae. F 1 about 1.1 X as long as C 1, 4.5 –5.0X as long as wide. Femoral formula 5–6 / 19–20 / 1 + 20– 21 / 4, basal spines stronger; denticles confined to distal 0.8, becoming closer together distally diverging abruptly at extreme apex, black, 2 rows, without distal discontinuity. T 1 ~ 0.7 X as long as F 1, evenly curved, ventral face shallowly concave; about 16–18 sharply pointed spinose setae ventrally; dorsal ciliation of decumbent short pale setulae, denser distally; without apicoventral extension on T 1 but with strong apical spine. Mid- and hind legs slender with fine setae; T 3 with ‘comb’ of short setae posteroapically. Wing ( Fig. 9View FIGURES 8 – 14). Membrane slightly yellow, veins yellowish; R 2 + 3 long and straight, not strongly curved towards C apically, joining C ~ 0.7 distance between end of R 1 and R 4; R 4 + 5 fork angle acute (~ 70 °), distal to position of M 1 + 2 fork by about 1.5 X length as R 4; M 2 reduced, weak, appearing as fold; R 5 and M 1 convergent distally and diverging at extreme apex; R 5 ~ 2.5 X as long as R 4; cell bm+dm long, ending just before R 1, ~2.0X as long as cell br. Halter whitish yellow. Abdomen ( Fig. 8View FIGURES 8 – 14). Tergites 1–6 and 8 brownish; tergite 7 and sternites yellowish. Tergites 7–8 with pale, strong setae laterally on posterior margin; tergite 8 shorter than sternite 8. Terminalia. Brown. Cercus slightly bifid at apex ( Fig. 10View FIGURES 8 – 14), left and right cerci closely approximated anterodorsally ( Fig. 11View FIGURES 8 – 14), distinctly setose on outer face. Epandrium widened basally, progressively narrowing towards apex, scattered setae on outer face ( Fig. 10View FIGURES 8 – 14); articulated to hypandrium by weak point anteriorly. Surstylus rounded, with stronger setae at apex and spine-like setae on inner face ( Figs 12, 14View FIGURES 8 – 14). Hypandrium subrectangular ( Fig. 14View FIGURES 8 – 14), inflated, lacking distinct setae; gonocoxal apodeme projecting as narrow process just beyond anterior margin of hypandrium ( Figs 10, 13View FIGURES 8 – 14). Subepandrial sclerite with median subtriangular projection anteriorly and median short finger-like posterior process ( Fig. 12View FIGURES 8 – 14). Phallus sclerotized basally, extending just beyond hypandrium apex, with membranous area ventrally starting near of base ( Fig. 13View FIGURES 8 – 14). Ejaculatory apodeme absent. Specimen length: 2.5 mm; wing length: 1.9 mm. Female. Unknown.

Geographic distribution. Brazil (Rio de Janeiro State).

Type material. HOLOTYPE ♂, “BR[azil], RJ[Rio de Janeiro], Teresópolis, P.[arque] N.[acional] Serra dos Órgãos, Est.[ação] barragem. 1000 m, 15–18.ix. 2011, Malaise. D.M. Takiya & A.P.M.Santos.” ( INPA). Paratypes: Same data as holotype (1 ♂, MNRJ).

Holotype condition. Abdomen in microtube with glycerin.

Etymology. The specific epithet refers to name given to the inhabitants of Rio de Janeiro State, where the specimens were collected.

Variations. Paratype with body length: 2.3 mm and wing length 1.6 mm.

Remarks. Hemerodromia carioca  sp. nov. differs from other species by M 2 reduced, weak, appearing as fold ( Fig. 9View FIGURES 8 – 14); cercus slightly bifid at apex ( Fig. 10View FIGURES 8 – 14); and surstylus with strong setae at apex and spine-like setae on inner face ( Figs 12, 14View FIGURES 8 – 14).


Instituto Nacional de Pesquisas da Amazonia


Museu Nacional/Universidade Federal de Rio de Janeiro