Hemerodromia megalamellata , 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: 206

publication ID

http://dx.doi.org/10.11646/zootaxa.4028.2.2

publication LSID

lsid:zoobank.org:pub:2ED815F3-73F8-41EF-905E-0BB98444E7FA

persistent identifier

http://treatment.plazi.org/id/A1138055-FFB6-CB04-A7C3-29C3FCF6F824

treatment provided by

Plazi

scientific name

Hemerodromia megalamellata
status

sp. nov.

Hemerodromia megalamellata  sp. nov.

( Figs 28–35View FIGURES 28 – 35)

Diagnosis. External characters similar to H. lamellata Câmara, Plant & Rafael, 2014  . Cercus wide basally, bluntly pointed at apex ( Fig. 31View FIGURES 28 – 35), left and right cerci separated anterodorsally ( Fig. 32View FIGURES 28 – 35); phallus with hook, and apical membranous area covered with spicules ( Fig. 34View FIGURES 28 – 35); ejaculatory and gonocoxal apodemes very long ( Figs 31, 34, 35View FIGURES 28 – 35).

Description. Male ( Fig. 28View FIGURES 28 – 35). 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 bearing fine reclinate setulae. Frons with 1–2 frontal setulae; 1 pair of distinct vertical setae contiguous with uniseriate row of 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 1.5 X as long as wide, stylus ~ 0.7 X as long as postpedicel. Thorax ( Fig. 28View FIGURES 28 – 35). Elongate, slightly arched ventrally; thoracic dorsum yellow except brownish on prothoracic collar, narrowly behind postpronotal lobe, on scutum posterolaterally above wing base and laterally on scutellum and mediotergite; antepronotum with anterior margin almost straight and scutum with yellow setae, very small and fine except 1 notopleural and 2 pairs of scutellars, the inner stronger. Legs ( Fig. 28View FIGURES 28 – 35). Whitish yellow. C 1 ~ 1.3 X longer than distance between C 1 and C2, 7X as long as wide with some pale dorsoapical setae. F 1 1.1 X as long as C 1, 4.5 –5.0X as long as wide. Femoral formula 7 / 17–18 / 1 + 17–18 / 6–7; basal spines stronger; denticles confined to distal 0.9, 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; about 20–23 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. 29View FIGURES 28 – 35). Membrane slightly yellow, veins yellowish; R 2 + 3 long and straight, not strongly curved towards C apically, joining C ~ 0.7–0.8 distance between end of R 1 and R 4; R 4 + 5 fork acute (~ 60 °), distal to position of M 1 + 2 fork by about same length as R 4; R 5 and M 1 convergent distally, diverging slightly at extreme apex; 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 ( Figs 28, 30View FIGURES 28 – 35). Tergites 1–6 and 8 brownish; tergites 7 and sternites yellow with pale setae most conspicuous on posterior margin; tergite 8 longer than sternite 8; membranous area between segment 8 and terminalia. Terminalia. Cercus brown, wide basally, bluntly pointed at apex ( Fig. 31View FIGURES 28 – 35), left and right cerci separated anterodorsally ( Fig. 32View FIGURES 28 – 35), distinctly setose. Epandrium yellowish, narrow, rounded at apex, scattered strong setae on outer face ( Fig. 31View FIGURES 28 – 35); articulated to hypandrium by weak point anteriorly. Surstylus narrow, with spine-like setae on inner face ( Figs 32, 33View FIGURES 28 – 35). Hypandrium brownish, rather subrectangular ( Fig. 35View FIGURES 28 – 35), with distinct setae; gonocoxal apodeme very long, projecting much beyond anterior margin of hypandrium ( Figs 30, 31, 34, 35View FIGURES 28 – 35). Subepandrial sclerite with subquadrate anterior projection and median subrounded posterior process ( Fig. 33View FIGURES 28 – 35). Phallus strongly sclerotized basally, extending well beyond hypandrium apex, with hook and apical membranous area, covered with spicules ( Fig. 34View FIGURES 28 – 35). Ejaculatory apodeme unilamellar plate flattened in vertical plane, ~ 0.8 X as long as gonocoxal apodeme ( Fig. 31View FIGURES 28 – 35). Specimen length: 2.8 mm; wing length: 2.2 mm. Female. Unknown.

Geographic distribution. Brazil (Paraná State).

Type material. HOLOTYPE ♂, “BR[asil], PR[Paraná], Céu Azul, P.[arque] N.[acional] Iguaçu, Rio Azul. 25 º09'21,5''S – 53 º 49 ' 44 ''W, 510 m, 6–8.ix. 2012, Malaise. D.M.Takyia, A.P.M.Santos, G.Jardim." ( INPA). Paratypes: Same data as holotype (2 ♂, INPA, 1 ♂, MNRJ).

Holotype condition. Abdomen in microtube with glycerin.

Etymology. From the Greek mega = great, referring to the very long gonocoxal apodemes.

Variations. Body length varying from 2.3–2.9 mm and wing length varying from 1.6–2.1 mm.

Remarks. Hemerodromia megalamellata  sp. nov. appears to belong to the same group of species that includes H. lamellata Câmara, Plant & Rafael, 2014  , H. longilamellata Câmara, Plant & Rafael, 2014  and H. membranosa  sp. nov., characterized by a membranous area between segment 8 and male terminalia, with very long ejaculatory and gonocoxal apodemes. Hemerodromia megalamellata  sp. nov. is similar to H. lamellata  in having the cercus wide basally and abruptly pointed distally; epandrium inflated basally, narrower distally and phallus with membranous area covered with small spicules ( Fig. 34View FIGURES 28 – 35). Hemerodromia megalamellata  sp. nov. differs from H. lamellata  in having the cercus not curved up distally ( Fig. 31View FIGURES 28 – 35) and phallus with hook basal to the sclerotized area ( Fig. 34View FIGURES 28 – 35). In H. lamellata  the cercus is curved up apically (fig. 51 in Câmara et al. 2014) and phallus without hook basal to the sclerotized area (fig. 55 in Câmara et al. 2014).

INPA

Instituto Nacional de Pesquisas da Amazonia

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Empididae

Genus

Hemerodromia