Hemerodromia cornuhypandrialis , 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: 202

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-FFBA-CB08-A7C3-281AFC4EF832

treatment provided by

Plazi

scientific name

Hemerodromia cornuhypandrialis
status

sp. nov.

Hemerodromia cornuhypandrialis  sp. nov.

( Figs 15–21View FIGURES 15 – 21)

Diagnosis. Yellow species ( Fig. 15View FIGURES 15 – 21). Epandrium with a long subapical flattened projection directed dorsally ( Fig. 17View FIGURES 15 – 21); and subepandrial sclerite with subtriangular anterior projection, with small, median finger-like posterior process ( Fig. 19View FIGURES 15 – 21).

Description. Male. Head ( Fig. 15View FIGURES 15 – 21). 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 2 X as long as wide, stylus ~ 0.8 X as long as postpedicel. Thorax ( Fig. 15View FIGURES 15 – 21). Elongate, slightly arched ventrally; thoracic dorsum yellow except brownish on prothoracic collar, posterolateral area above scutellum and mediotergite; antepronotum with anterior margin almost straight and scutum with yellow setae, very small and fine except 1 notopleural and 1 pair of scutellars. Legs ( Fig. 15View FIGURES 15 – 21). Whitish yellow. C 1 ~ 1.3 X longer than distance between C 1 and C2, 6X as long as wide with some pale dorsoapical setae. F 1 ~ 1.2 X as long as C 1, 3.5 –4.0X as long as wide. Femoral formula 6 / 20–21 / 18 –19/ 6–7; basal spines stronger; denticles confined to distal 0.8, becoming closer together distally, black, 2 rows linear, without distal discontinuity. T 1 ~ 0.6 X as long as F 1, evenly curved, ventral face shallowly concave; about 15–17 sharply pointed spinose setae ventrally, posteroventral row more distinct; dorsal ciliation of decumbent short pale setulae, denser distally; with small apicoventral extension on T 1 bearing strong apical spine. Mid- and hind legs slender with fine setae; T 3 with ‘comb’ of short setae posteroapically. Wing. 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; 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 15, 16View FIGURES 15 – 21). Tergites 1–6 and 8 brownish; tergites 7 and sternites yellow with pale setae most conspicuous on posterior margin; tergite 8 shorter than sternite 8. Terminalia. Brownish ( Figs 16, 17View FIGURES 15 – 21). Cercus narrow, wide basally and pointed at apex ( Fig. 17View FIGURES 15 – 21), left and right cerci closely approximated anterodorsally ( Fig. 18View FIGURES 15 – 21), distinctly setose. Epandrium rounded at apex, with long subapical flattened projection directed dorsally ( Fig. 17View FIGURES 15 – 21), scattered distinct setae on outer face and spine-like setae on inner face of dorsal projection; articulated to hypandrium by weak point anteriorly. Surstylus absent. Hypandrium subtriangular ( Fig. 20View FIGURES 15 – 21), with 2 posterior hornlike projections ( Fig. 21View FIGURES 15 – 21) with distinct setae; gonocoxal apodeme projecting as narrow process just beyond anterior margin of hypandrium. Subepandrial sclerite with subtriangular anterior projection, with small, median finger-like posterior process ( Fig. 19View FIGURES 15 – 21), with distinct setae at apex. Phallus strongly sclerotized ( Fig. 21View FIGURES 15 – 21), extending well beyond hypandrium apex, rather rounded at apex. Ejaculatory apodeme absent. Specimen length: 4.4 mm; wing length: 3.9 mm. Female. Unknown.

Geographic distribution. Brazil (Rio de Janeiro State).

Type material. HOLOTYPE ♂, “ Brazil, RJ[Rio de Janeiro], Itatiaia, Parque Nacional do Itatiaia. Córrego Maromba, abaixo da Cachoeira Véu de Noiva, Malaise trap. S 22 º 25 ' 38.6 " W 44 º 37 ' 9.7 " 1140m, 10.i –02.ii. 2015, PNI01. DM Takiya, APM Santos & MLF Monné” ( INPA). Paratypes: Same data of holotype (5 ♂, INPA, 2 ♂, MWNC, 3 ♂, MNRJ).

Holotype condition. Good. Not dissected.

Etymology. From the Latin cornus meaning a horn, in reference to the horn-shaped apex of the hypandrium.

Variations. Body length varying from 2.9–4.5 mm and wing length varying from 2.6 –4.0 mm.

Remarks. Hemerodromia cornuhypandrialis  sp. nov. differs from other species specifically by the shape of the epandrium in having a long subapical flattened projection directed dorsally ( Fig. 17View FIGURES 15 – 21), scattered distinct setae on outer face and spine-like setae on inner face of the dorsal projection.

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