Neohybos fuscipes, Ale-Rocha, 2007

Ale-Rocha, R., 2007, New species of Neohybos Ale-Rocha & Carvalho (Diptera, Hybotidae, Hybotinae) from Colombia, Ecuador and Peru, Zootaxa 1503, pp. 33-54 : 45-47

Neohybos fuscipes sp. n.

( Figs. 44 – 51 , 80 )

Diagnosis. Thorax black, brown pruinose except dorsum of pronotum and basal two-thirds of scutum; thoracic bristles short, brown, sparse; acr lacking on prescutellar disc; wing homogeneously brownish; stigma brown; coxae, trochanters and hind femur dark-brown to black, fore and mid femora, all tibiae and tarsi brown, hind femuro-tibial articulation yellow; abdomen slender with thin yellow bristles

Description. Holotype male. Body: 5.1 mm. Wing: 5.3 mm. Antenna placed below middle of head; postpedicel oval, 2.5 times longer than wide, approximately 2 times longer than scape and pedicel combined. Face about two-thirds length of frons, narrowly dichoptic. Pair of ocellar setae long and parallel. Postcranium with brown pruinescence; occipital setae thin, long, uniserial and scattered.

Thorax black, brown pruinose except dorsum of pronotum and basal two-thirds of scutum lacking pruinescence. Bristles brown, short, scattered, inconspicuous on prescutellar disc; acr and dc uniserial, acr lacking on prescutellar disc; 2 npl as long and strong as scutellar apical pair; scutellum with 1 preapical pair long, robust and convergent, 3 apical bristles and 5–6 lateral pairs thin, about one quarter length of preapical pair.

Wing ( Fig. 80 ) narrow; homogeneously brownish, stigma brown; R4+5 and M1 parallel.

Legs: coxae, trochanters and hind femur dark-brown to black, fore and mid femora, all tibiae and tarsi brown, hind leg with femuro-tibial articulation yellow. Hind femur discreetly inflated, 5.2 times longer than wide; hind tibia tubular. Outstanding bristles: fore tibia with 1 posterior preapical bristle reaching half of corresponding tarsomere 1 and 1 short anterior preapical bristle; mid tibia with 3 elongate anterodorsal bristles (2 sub-basal and 1 at middle) and 1 long posterior preapical bristle reaching apex of corresponding tarsomere 1; mid tarsomere 1 with 1 posterior sub-basal bristle as long as tarsomere 1; hind trochanter with 1 short ventral spine and 2 spine-like posteroventral bristles; hind femur with 1 anterodorsal and 1 anterior bristles at distal quarter, 8 anteroventral and 14 spine-like ventral bristles, 5 ventral distal bristles reduced to short thorns, 11– 12 posteroventral bristles with protuberant bases.

Abdomen 3 times longer than thorax; shiny black with brown pruinescence on Tg1, base of Tg2, Tg8 and

St8; bristles yellow, thin, very long on Tg1 and Tg2; St8 wider than long, with long, slender yellow and sparse bristles on distal margin. Terminalia ( Figs. 44–48 ): robust; left epandrial lamella broader than right lamella in lateral view; right surstylus elongate; hypandrium broad with three elongate lobes, median lobe longer and arched posteriorly, strongly clavate in lateral view; dorsal bridge complete; phallus long and robust with brush of numerous, long and stout ventral bristles at distal third.

Female. Similar to male except for: hind trochanter with 2 robust and yellow posteroventral distal bristles; hind femur more slender than corresponding femur of male, with 1 dorsal preapical bristle, 1 anterior bristle at distal quarter, 5–6 anteroventral bristles on distal half and 1 more long and thin bristle at basal quarter, 8 ventral thorns, 5 posteroventral spine-like bristles on distal third and remaining basal two-thirds of posteroventral surface with long, thin yellow bristles. Terminalia: Tg9 slightly narrowed in middle; St9 slightly protuberant basally with faintly sclerotized areas, bearing brush of elongate bristles near base and apex.

Distribution. Ecuador.

Type material. Holotype male: ECUADOR: Tunguruhua , Banos, 2500–3000 m, 8.x.1978, M. Cooper, BM 1995 E-90 ( BMNH) . Paratypes: same data of holotype, 8.x.1978, 1 male ( INPA) , 1 female ( BMNH) ; 9.x.1978, 1 male, 1 female ( BMNH) ; 20.xi.1978, 1 male ( BMNH) , 1 female ( INPA) ; 3.xii.1978, 1 female ( BMNH) .

Variation. the coloration varies from black to brown.

Etymology. The specific name is derived from the Latin fuscus = brown, brunet, darkness; refers to the coloration of the tarsi.

Figures

FIGURES 44–51. Terminalia of Neohybos fuscipes, sp. n. 44–48, male: 44, epandrium and cerci, dorsal view; 45, epandrium, ventral view (apex of hypandrium outlined); 56,47, left and right epandrial lamellae, lateral view; 48, hypandrium, ventral view. 49–51, female: dorsal, lateral and ventral views. Figs 44–48; 49–51 in the same scale.

FIGURES 74–81. Wings of Neohybos: 74, N. bicolor sp. n.; 75, N. brunnescens sp. n.; 76, N. colombiensis sp. n.; 77, N. cooperi sp. n.; 78, N. cupreus sp. n.; 79, N. elegans sp. n.; 80, N. fuscipes sp. n.; 81, N. tenuis sp. n.