Hemerodromia membranosa , 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: 208

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Hemerodromia membranosa

sp. nov.

Hemerodromia membranosa  sp. nov.

( Figs 36–43View FIGURES 36 – 43)

Diagnosis. Similar to H. longilamellata  . Phallus with membranous area covered with spicules and hook-like process apically ( Fig. 42View FIGURES 36 – 43); ejaculatory and gonocoxal apodemes very long ( Figs 39, 40, 42View FIGURES 36 – 43).

Description. Male ( Fig. 36View FIGURES 36 – 43). Head. Dark brown to black, antenna and mouthparts yellow with all setae whitish. Strongly dorsoventrally flattened; ocellar triangle with 1 pair of proclinate setae; anterior ocellus larger. Eyes iridescent black; close together on face bearing fine reclinate setulae. Frons with 1 frontal setula; 2–3 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 yellow setae. Antenna with scape and pedicel bearing distinct, short dorsal setulae; postpedicel about 1.3 X as long as wide, stylus ~ 0.8 X as long as postpedicel. Thorax ( Fig. 36View FIGURES 36 – 43). Elongate, slightly arched ventrally; thoracic dorsum yellow except brownish on prothoracic collar, narrowly behind postpronotal lobe, on scutum posterolaterally above wing base, and mediotergite; antepronotum with anterior margin almost straight and scutum with yellow setae, very small and fine except 1 notopleural. Legs ( Fig. 36View FIGURES 36 – 43). Whitish yellow. C 1 ~ 1.1 X longer than distance between C 1 and C2, 6X as long as wide with some pale dorsoapical setae. F 1 about 1.2 X as long as C 1, 4.0– 4.5 X as long as wide. Femoral formula 7 / 23–24 / 1 + 20–21 / 6–7; denticles confined to distal 0.8, becoming closer together distally, black, 2 rows linear, without distal discontinuity, converging apically and diverging at extreme apex. T 1 ~ 0.7 X as long as F 1, evenly curved, ventral face shallowly concave; about 19–21 sharply pointed spinose setae ventrally; dorsal ciliation of decumbent short pale setulae, denser distally; without apicoventral extension on T 1, with short black subapical spine. Mid- and hind legs slender with fine setae; T 3 with ‘comb’ of short setae posteroapically. Wing ( Fig. 37View FIGURES 36 – 43). Membrane slightly yellow, veins brownish; 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 + 5; R 4 + 5 fork angle acute (~ 60 °); distal to position of M 1 + 2 fork by about 2.0X as long as R 4; R 5 and M 1 almost parallel; R 5 ~ 2 X as long as R 4; cell bm+dm short, ending at level of R 1, ~ 2 X as long as cell br. Halter whitish yellow. Abdomen ( Fig. 36View FIGURES 36 – 43). Tergites 1–6 and 8 brownish; tergite 7 and sternites yellowish. Tergite 8 longer than sternite 8; membranous area between segment 8 and terminalia. Terminalia. Cercus brown, narrow, pointed apically ( Figs 38, 39View FIGURES 36 – 43), left and right cerci separated anterodorsally ( Fig. 40View FIGURES 36 – 43), with distinct setae on outer face. Epandrium wide, subrectangular with rounded apex ( Fig. 39View FIGURES 36 – 43); with scattered setae on outer face. Surstylus subrounded, with distinct setae apically ( Fig. 41View FIGURES 36 – 43); articulated to hypandrium by weak point anteriorly. Hypandrium yellow, rather subtriangular, not markedly inflated, with distinct setae ( Figs 41, 43View FIGURES 36 – 43); gonocoxal apodeme very long, projecting much beyond anterior margin of hypandrium ( Figs 39, 40View FIGURES 36 – 43). Subepandrial sclerite with quadrate anterior margin, with median rounded process posteriorly. Phallus sclerotized basally, with pointed dorsal projection apically and membranous area covered with spicules and hook-like process apically ( Fig. 42View FIGURES 36 – 43). Ejaculatory apodeme unilamellar, flattened plate laterally, ~ 0.5 X as long as gonocoxal apodeme ( Figs 39, 40View FIGURES 36 – 43). Specimen length: 2.7 mm; wing length: 2.3 mm. Female. Unknown.

Geographic distribution. Brazil (Ceará State).

Type material. HOLOTYPE ♂, “ Brazil, CE[Ceará], Ubajara, P.[arque] N.[acional] Ubajara, Cachoeira do Cafundó. 03º 50 ' 13 ''S – 40 º 54 ' 35 ''W, Malaise, 20–22.vii. 2012. J.A.Rafael & F.Limeira-de-Oliveira” ( CZMA). Paratypes: Same data as holotype (5 ♂, INPA, 4 ♂, CZMA). Idem, 13–17.xi. 2012. F. Limeira-de-Oliveira, D.W.A. Marques, cols. (2 ♂, MNWC).

Holotype condition. Good. Not dissected.

Etymology. From the Latin membranaceus, referring to the apical membranous area on the phallus.

Variation. Paratypes with body length varying from 2.1–3.5 mm and wing length varying from 1.2–1.8 mm.

Remarks. Hemerodromia membranosa  sp. nov. appears to belong to the same group of species that includes H. lamellata  , H. longilamellata  and H. megalamellata  sp. nov., which share very long ejaculatory and gonocoxal apodemes. Hemerodromia membranosa  sp. nov. is similar to H. longilamellata  by having the cercus pointed apically ( Fig. 39View FIGURES 36 – 43) and epandrium rounded apically ( Fig. 39View FIGURES 36 – 43). Hemerodromia membranosa  sp. nov. differs from H. megalamellata  sp. nov. by phallus with membranous area covered with spicules and hook-like process apically ( Fig. 42View FIGURES 36 – 43). The phallus of H. longilamellata  has a narrow membranous area apically and lacks scattered spicules ( Câmara et al., 2014, fig. 60).


Instituto Nacional de Pesquisas da Amazonia