Hemerodromia longilamellata , 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: 224-226

publication ID

http://dx.doi.org/10.11646/zootaxa.3893.2.3

publication LSID

lsid:zoobank.org:pub:68C58684-BD57-4AAB-88EF-69E093AB12DA

persistent identifier

http://treatment.plazi.org/id/039887CE-FF81-3A6A-BBD2-FBC76418BD66

treatment provided by

Plazi

scientific name

Hemerodromia longilamellata
status

sp. nov.

Hemerodromia longilamellata  sp. nov.

( Figs 56–61View FIGURES 56 – 61)

Diagnosis. Extensive membranous area between segment 8 and terminalia ( Fig. 56View FIGURES 56 – 61). Cercus wide basally and gradually tapering towards the apex ( Fig. 58View FIGURES 56 – 61); gonocoxal apodemes very long, projecting well beyond anterior margin of the hypandrium ( Figs 58, 60, 61View FIGURES 56 – 61); ejaculatory apodeme a unilamellar vertically flattened plate, ~ 0.5 X as long as gonocoxal apodeme ( Figs 58, 60, 61View FIGURES 56 – 61).

Description. Male ( Fig. 56View FIGURES 56 – 61). 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; small vertical setae, contiguous with uniseriate 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 2 X as long as wide, stylus ~ 0.8 X as long as postpedicel. Thorax ( Fig. 56View FIGURES 56 – 61). Elongate, slightly arched ventrally; dorsum yellow, except brownish on prothoracic collar, narrowly behind postpronotal lobe, posterolaterally above wing base on scutum and laterally on scutellum and mediotergite; antepronotum with anterior margin almost straight; scutum with yellow setae, very small and fine except 1 notopleural. Legs ( Fig. 56View FIGURES 56 – 61). Whitish yellow. C 1 ~ 1.3 X longer than distance between C 1 and C2, 5X as long as wide with some pale dorsoapical setae. F 1 ~ 1.2 X as long as C 1, 5.0X as long as wide; femoral formula 7 / 25 / 1 + 16 / 6; denticles confined to distal 0.8, becoming closer together distally, black, 2 rows linear, without distal discontinuity. T 1 ~ 0.7 X as long as F 1, evenly curved, ventral face shallowly concave; with 2 rows 14–17 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 but T 3 with ‘comb’ of short setae posteroapically. Wing ( Fig. 57View FIGURES 56 – 61). Membrane faintly 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; R 4 + 5 fork angle acute (~ 60 °), distal to position of M 1 + 2 fork by about 1.5 X as long as R 4; R 5 and M 1 convergent distally and diverging at extreme apex; vein R 5 ~ 2.0X as long as R 4; cell bm+dm short, ending before at level of R 1, ~2.0X as long as cell br. Halter whitish yellow. Abdomen ( Fig. 56View FIGURES 56 – 61). Tergites 1–6 and 8 brownish; tergite 7 and sternites yellowish. Tergites with distinct setae on posterior margin; tergite 8 shorter than sternite 8. Terminalia. Brown. Cercus wide basally and gradually tapering towards the apex ( Fig. 58View FIGURES 56 – 61); left and right cerci distinctly separated anterodorsally ( Fig. 59View FIGURES 56 – 61), distinctly setose on outer face. Epandrium rounded at apex ( Fig. 58View FIGURES 56 – 61), scattered setae on outer face. Surstylus shorter than epandrium, with spine-like setae apically ( Figs 59, 61View FIGURES 56 – 61). Hypandrium rather subrectangular in ventral view, without distinct setae ( Fig 61View FIGURES 56 – 61); gonocoxal apodeme very long, projecting well beyond anterior margin of hypandrium ( Figs 58, 60, 61View FIGURES 56 – 61). Subepandrial sclerite narrow, with a small median posterior process ( Fig. 59View FIGURES 56 – 61). Phallus sclerotized, extending just beyond hypandrium apex, with narrow membranous area apically lacking scattered spicules ( Fig. 60View FIGURES 56 – 61). Ejaculatory apodeme a unilamellar plate flattened in vertical plane, ~ 0.5 X as long as gonocoxal apodeme ( Figs 58, 60, 61View FIGURES 56 – 61). Body length: 2.8 mm; wing length: 2.1 mm. Female: Unknown.

Type material. HOLOTYPE ♂ “ Brasil, Manaus, [Reserva Ducke] IG.[arapé] Tinga. Arm.[adilha] Malaise. iii. 2003. J.M.E.Ribeiro, J.Vidal & Jailson Vidal” ( INPA). PARATYPES: Idem, R.[eserva] Ducke, 21.xi. 1992, Adesiva, Vidal & Jailson (1 ♂, MZUSP); Idem, Novo Airão, Ig.[arapé] Mato Grosso, 02º 48 ' 43 ''S – 60 º 55 ' 30.1 ''W, Varredura, 30.iii. 2013, J.A. Rafael, A.R.Plant & J.T. Câmara (3 ♂, INPA).

Holotype condition. Postpedicel lost. Wing mounted on microslide. Terminalia in microtube with glycerin.

Etymology. From the Latin longi (long) which refers to the very long gonocoxal apodeme.

Variations. Body length varying from 2.4 mm to 3.2 mm and wing length varying from 1.8 mm to 2.4 mm.

Remarks. Hemerodromia longilamellata  sp. nov is similar to H. lamellata  sp. nov. both of which have extensive membranous area between segment 8 and terminalia; ejaculatory apodeme and gonocoxal apodemes very long. Hemerodromia longilamellata  sp. nov differs from the latter by the cercus wide basally and gradually tapering towards the apex, epandrium rounded at apex and phallus with narrow membranous area apically lacking scattered spicules. In H. lamellata  sp. nov. the cercus wide basally and curved up distally, epandrium inflated basally, narrower distally and phallus with membranous area covered with spicules.

INPA

Instituto Nacional de Pesquisas da Amazonia

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Empididae

Genus

Hemerodromia