Hemerodromia lamellata, Câmara, J. T., Plant, A. R. & Rafael, J. A., 2014

Câmara, J. T., Plant, A. R. & Rafael, J. A., 2014, Neotropical Hemerodromia Meigen (Diptera: Empididae), a world of discovery I: new generic record and new species from Brazilian Amazon Basin, Zootaxa 3893 (2), pp. 209-231 : 222-224

Hemerodromia lamellata sp. nov.

( Figs 48–55 )

Diagnosis. Similar to H. longilamellata sp. nov. Cercus wide basally, bluntly narrower distally, curved up distally ( Figs 50, 51 ); gonocoxal apodeme very long, projecting well beyond anterior margin of hypandrium ( Figs 51, 52, 53, 55 ); ejaculatory apodeme with lamella flattened in vertical plane, very long, 0.5X as long as length of the gonocoxal apodeme ( Figs 51, 52, 53, 55 ).

Description. Male ( Fig. 48 ). Head. 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 bears fine reclinate setulae. Frons with 1–2 setulae; with 2–3 distinct vertical setae, contiguous with uniseriate smaller 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 1.5X as long as wide, stylus ~ 0.9X as long as postpedicel. Thorax ( Fig. 48 ). Elongate, slightly arched ventrally; dorsum yellow, except brownish on prothoracic collar longitudinally and mediotergite; antepronotum with anterior margin almost straight; scutum with yellow setae very small and fine except 1 notopleural. Legs ( Fig. 48 ). Whitish yellow. C1 ~ 1.2X longer than distance between C1 and C2, 4X as long as wide with some pale dorsoapical setae. F1 ~ 1.1X as long as C1, 4.5–5.0X as long as wide; femoral formula 6–7/20–21/1+21/6; denticles confined to distal 0.9, 2 rows linear, black, without distal discontinuity, converging distally but divergent at tip. T1 ~ 0.7X as long as F1, evenly curved, ventral face shallowly concave; with 2 rows of 15–17 sharply pointed spinose setae ventrally; dorsal ciliation of decumbent short pale setulae, denser distally; without apicoventral extension on T1 but with strong apical spine. Mid and hind legs slender with fine setae but T3 with ‘comb’ of short setae posteroapically. Wing ( Fig. 49 ). Membrane faintly yellow, veins yellowish; R2+3 long and straight, not strongly curved towards C apically, joining C ~ 0.7 distance between end of R1 and R4; R4+5 fork acute (~ 60°), distal to position of M1+2 fork by about 1.5X as long as R4; R5 and M1 convergent distally; vein R5 ~ 2X as long as R4; cell bm+dm short, ending at level of R1, ~ 2.5X as long as cell br. Halter whitish yellow. Abdomen ( Figs 48, 50 ). Tergites 1–6 brown. Tergites 7–8 and sternites yellow with pale setae conspicuous on posterior margins; tergite 8 shorter than sternite 8. Terminalia. Brownish. Cercus wider basally, bluntly narrower distally with pointed apex, curved up distally ( Fig. 51 ); left and right cerci distinctly separated anterodorsally ( Figs 52, 54 ), distinctly setose. Epandrium rather inflated basally, narrower distally, with distinct setae on outer face ( Fig. 51 ). Surstylus not extended beyond of epandrium ( Fig. 53 ). Hypandrium rather triangular in ventral view, not markedly inflated, weakly setae, membranous on basal part ( Fig. 53 ); gonocoxal apodeme very long, projecting well beyond anterior margin of hypandrium ( Figs 51, 52, 53, 55 ). Subepandrial sclerite with short triangular anterior projection and median triangular posterior process ( Fig. 54 ). Phallus largely sclerotized, extending well beyond hypandrium apex, produced apically with membranous area covered with small spicules ( Fig. 55 ). Ejaculatory apodeme with lamella flattened in vertical plane, very long, 0.5X as long as length of gonocoxal apodeme ( Figs 51, 52, 53, 55 ). Body length: 2.0 mm; wing length: 1.8 mm. Female. Unknown.

Type material. HOLOTYPE ♂ “ Brasil, Amazonas, Pq[Parque] N.[acional] Jaú, Ig.[arapé] Miratucu/ Ig.[arapé] Gerlei, 01º57'00''S- 61º49'00''W. 23–28.vii.1995. Arm[adilha] Malaise J.A.Rafael & J. Vidal” ( INPA). PARATYPES: Same data as holotype (2 ♂, INPA); Idem, Rio Carabinani, Ig. Ipiranga., 02º03'05''S – 61º33'32''W, 29–31.vii.1995, Rafael & J.F. Vidal. Arm. cola (1 ♂, MNRJ); Idem, Rio Mandi, 11.vii.1995, Malaise, J.A. Rafael & J. Vidal (3 ♂, MZUSP); Idem, R. Ducke, Ig. Uberê. Malaise, 16.vi.–21.vii.2003. J. Ribeiro & Vidal (1 ♂, NMWC).

Holotype condition. Good condition. Notopleural setae lost. Wing mounted on microslide. Abdomen in microtube with glycerin.

Etymology. The specific name refers to the elongate ejaculatory lamella.

Variations. Body length varying from 1.8 mm to 2.6 mm and wing length varying from 1.5 mm to 2.0 mm.

Remarks. Hemerodromia lamellata sp. nov is similar to H. longilamellata sp. nov. both of which have extensive membranous area between segment 8 and terminalia; very long ejaculatory apodeme and gonocoxal apodemes. Hemerodromia lamellata sp. nov. differs from the latter by cercus curved up distally, epandrium inflated basally, narrower distally and phallus with membranous area covered with small spicules. In H. longilamellata sp. nov. the cercus is not curved, the apex of the epandrium is rounded and the apical thin membranous area of the phallus lacks scattered spicules.

Figures

FIGURES 48 – 55. Hemerodromia lamellata sp. nov., holotype ♂. 48. habitus, lateral view; 49. wing; 50. abdomen from tergite 4 to terminalia, lateral view; 51. terminalia, lateral view; 52. terminalia, dorsal view; 53. terminalia, ventral view; 54. cercus and subepandrial sclerite, dorsal view; 55. ejaculatory apodeme, gonocoxal apodeme, phallus and hypandrium, lateral view.