Neohybos pectinatus, Ale-Rocha, 2017

Ale-Rocha, Rosaly, 2017, New species of Neohybos Ale-Rocha & Carvalho (Diptera, Hybotidae, Hybotinae) from South America, Zootaxa 4358 (3), pp. 507-531 : 524-525

Neohybos pectinatus sp. nov.

( Figs 45–48 , 69 )

Diagnosis. Body and legs slender; thorax black, shiny dorsally; notopleuron and posterior margin of scutum and scutellum with sparse pale brown pruinescence; abdomen elongate, about 3.5 times longer than thorax; fore and mid legs brown, except apex of femora, tibiae and tarsomeres 1–2 yellow; hind leg black, except apex of femur, base and apex of tibia and tarsomeres 1–2 yellow; wing hyaline, pterostigma pale brown.

Holotype male. Body: 4.6 mm. Wing: 3.7 mm. Head: postpedicel twice longer than wide, as long as length of scape and pedicel combined, round distally. Face narrowly dichoptic, linear; half-length of frons. Ocellar setae long and divergent. Postcranium clothed in dense, pale brown pruinescence. Postocular and occipital setae quite short, thin and uniserial. Thorax ( Fig. 69 ): black; shiny dorsally; pronotum, notopleuron, prescutellar disc, scutellum and pleura covered with sparse, pale brown pruinescence. Setae yellow, somewhat elongate and thin; acr 4-serial, misaligned, longer on prescutellar disc; dc uniserial, more numerous and unordered on presutural region; ial and spal setae sparse and unordered; 2 npl long and strong, longer than apical scutellar pair; 1 pal, long and thin; 5 pairs of scutellar setae, apical pair long, slender, slightly divergent, very closely approximated, 3 times longer than lateral setae, latter very thin. Wing: narrow, hyaline, pterostigma pale brown; R4+5 and M1 parallel apically. Legs ( Fig. 69 ): fore and mid legs brown, except apex of femora, tibiae and tarsomeres 1–2 yellow; hind leg black, except apex of femur, base and apex of tibia and mid tarsomeres 1–2 yellow. Hind femur thickened; hind tibia slightly arched, cylindrical. Setae elongate, thin and yellow. Fore tibia with 1 elongate preapical anterior seta and 1 very long preapical posterior seta, both setae reaching half-length of fore tarsomere 1. Fore tarsomere 1 with 1 long and robust preapical seta on anterior and posterior surfaces, extending beyond apex of fore tarsomere 2. Mid tibia with 3 long and robust ad setae on basal third; ventral surface with 1 long apical seta reaching apex of mid tarsomere 1. Mid tarsomere 1 with 1 short pv seta near base and 1 long ad preapical seta extended beyond apex of tarsomere. Hind trochanter with 2 short ventral spine-like setae. Hind femur with 1 dorsal seta on distal fourth; av surface with 8 spine-like setae (4 near base rather ventrally positioned, 1 median, 2 beyond middle, 1 preapical); 11 short ventral spine-like setae closely approximated near apex of femur; 11 spine-like, elongate pv setae. Hind tibia and hind tarsus lacking robust setae. Abdomen: shiny black, about 3.5 times longer than thorax; tergites 7–8 and all sternites clothed in brown pruinescence. Setae thin and yellow; longer on tergite 1 and lateral of tergite 2; sternite 8 large with elongate setae on distal margin. Terminalia ( Figs 45– 48 ): right bacilliform sclerite protruded with short, apically pointed distal process. Right surstylus tapered distally, slightly curved to inner side; left surstylus bifid distally with widely separated finger-like branches, each branch with long and strong apical setae. Hypandrium with posterior margin deeply concave on left side; right hypandrial lobe tapered distally, almost half-length of base of hypandrium. Postgonite ribbon-like and slender; phallus elongate, narrowed in middle.

Female. Unknown.

Type material. HOLOTYPE ♂ ( CAS) labelled: “ COLOMBIA. 12 mi. S. of Anserma , Caldas, 1030m, iii.17.1955 / EI Schlinger & ES Ross collector”; “ Holotype / Neohybos pectinatus / Ale-Rocha, R. ” [red label]. Specimen in good condition, except the wings with apex torn . PARATYPE. PERU. [Huánuco] 43 mi. E. of Tingo Maria, x.5.1954 / EI Schlinger & ES Ross collector (1♀, CAS).

Distribution. Colombia, Peru.

Etymology. The specific name is derived from the Latin pecten (comb) in reference to the long apical setae on the extension of the left surstylus.

Figures

FIGURES45–48. NeohybospectinatUs sp.nov. Hypopygium:45, dorsal aspect; 46, ventral aspect; 47, right epandrial lamella, lateral aspect; 48, left epandrial lamella,lateral aspect.Scale bar = 0.3 mm.

FIGURES 67–70. 67, Neohybos laUtUs sp. nov. (paratype, male); 68, Neohybos neblinensis sp. nov. (paratype, male); 69, Neohybos pectinatUs sp. nov. (holotype,male); 70, Neohybos ramosUssp. nov. (holotype, male).