Neohybos izabelensis Ale-Rocha 2017, sp. nov.
Creators: name: Ale-Rocha, Rosaly
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Hybotidae
Neohybos
Neohybos izabelensis

description: Neohybos izabelensis sp. nov.
(Figs 29–32, 57, 66)
Diagnosis. Thorax dark-brown, mostly shiny dorsally, brown pruinescence on prescutellar disc, notopleuron, anterior margin of scutellum and pleura; 1 posterior dc pair weakly differentiated; wing narrow, hyaline, pterostigma pale brown; legs brown, except all tarsomeres 1–2 yellow and hind tibia pale brown with yellow base; hind femur slender; sternite 8 with long sparse thin setae on distal margin.
Holotype male. Body: 3.8mm. Wing 3.6 mm. Head: postpedicel ovate, twice as long as wide, as long as length of scape and pedicel combined. Face dichoptic, shorter than frons. Ocellar pair long and robust, slightly divergent. Postcranium clothed in brown pruinescence. Postocular setae very long; occipital setae long, upper setae biserial and lower setae multiserial. Thorax (Fig. 66): dark brown; mostly shiny dorsally, brown pruinescence on prescutellar disc, notopleuron, anterior margin of scutellum and pleura. Setae dark brown, mostly short; acr and dc uniserial, slightly longer on prescutellar disc, 1 posterior dc pair weakly differentiated; ial sparse; spal rather numerous and unordered; 2 npl as long as scutellar pair; 1 pal shorter than npl; 5 pairs of scutellar setae, apical pair long and divergent, stouter and 4 times longer than lateral setae. Wing (Fig. 57): narrow; hyaline, pterostigma pale brown; R4+5 and M1 divergent apically. Legs (Fig. 66): brown except all tarsomeres 1–2 yellow and hind tibia pale brown with yellow base. Hind femur slender; hind tibia straight and cylindrical. Setae brown. Fore tibia with 1 anterior and 1 posterior short preapical seta not reaching half-length of tarsomere 1. Mid tibia with 3 dorsal setae (2 on basal half, 1 slightly before middle) and 1 long preapical posterior seta extending beyond half-length of mid tarsomere 1. Mid tarsomere 1 with 1 dorsal seta near base and 1 dorsal preapical seta, both rather short and thin; 1 short pv seta near base reaching apex of tarsomere 1. Hind femur with 1 dorsal seta on distal fifth; 1 ad preapical and 1 anterior seta on distal third; av surface with 9 strong spine-like setae; 10 short and strong ventral setae and 5 pv setae (3 apical, 2 near base). Hind trochanter lacking spine-like setae. Hind tibia and hind tarsus lacking differentiated setae. Abdomen: brown to pale brown; long and thin, about 4.6 times longer than thorax; tergite 1 and all sternites covered with brown pruinescence. Setae scattered, brown to pale yellow; sternite 8 with long, sparse and thin setae on distal margin. Terminalia (Figs 29–32): right bacilliform sclerite not exposed, only short, straight and pointed dorsal process visible dorsally. Right surstylus divided into two sickle-shaped processes; left surstylus shallowly concave apically. Hypandrium with posterior margin deeply concave, lateral lobes subequally long; right lobe wider than left lobe, pointed apically. Postgonite ribbon-like and slender; phallus long and slender with swollen apex.
Female. Unknown.
Type material. HOLOTYPE ♂ (INPA) labelled: “ BRASIL. Amazonas / S.[Santa] Izabel do Rio Negro / Pico da Neblina / 8–12.x.1990; 2030m / Arm. [Armadilha] Malaise / J.A. Rafael / J. Vidal ”; “ Holótipo / Neohybos izabelensis / Ale-Rocha, R. ” [red label]. Specimen in good condition, except for right wing mounted between slides, left wing folded; abdomen dissected. PARATYPE: 1♂, same data of holotype.
Distribution. Brazil (Amazonas).
Etymology. The specific name refers to the type locality, Santa Izabel do Rio Negro, Brazil.
description: Published as part of Ale-Rocha, Rosaly, 2017, New species of Neohybos Ale-Rocha & Carvalho (Diptera, Hybotidae, Hybotinae) from South America, pp. 507-531 in Zootaxa 4358 (3) on pages 517-520, DOI: 10.11646/zootaxa.4358.3.7, http://zenodo.org/record/1068817