Syneches obeliscus Bezzi

Menezes, Isis Sá & Ale-Rocha, Rosaly, 2016, Revision of the Amazonian species of Syneches Walker (Diptera, Hybotidae, Hybotinae), Zootaxa 4103 (5), pp. 401-442 : 426

Syneches obeliscus Bezzi

( Fig. 120 )

Syneches obeliscus Bezzi, 1909: 315 ; Collin, 1933: 28 (citation); Smith, 1967: 10 (catalog); Rafael & Ale-Rocha, 1995: 541, figs 44–46,65 (review); Yang et al., 2007: 311 (catalog).

Diagnosis. Medium size (about 3.5 mm length) and dark brown. Antenna dark brown; scape very small, about half length of pedicel; postpedicel ovate, small, as long as length of scape and pedicel combined; palpus dark brown. Scutum high, pyramidal, dark brown to black; five pairs of scutellar setae. Abdomen brown. Legs long and slender, femur-tibial joints, apex of fore tibia, mid and hind tibiae and tarsomeres 1–4 yellow, the rest is dark brown to black; base of femur and fore tibia slightly swollen. Wing light brown with a small distinct seta on basicosta; pterostigma tenuous.

Female. Unknown.

Geographical distribution. Peru and Bolivia ( Fig. 120 ).

Comments. Species with a very high pyramidal scutum as in S. annulipes Bezzi ; however, it can be distinguished from it by the sub-hyaline wing with slightly infuscated pterostigma, epandrial lamella, in lateral view, more slender apically, and hypandrium with one pair of protuberances at laterodistal margin (see Rafael & Ale-Rocha 1995, figs 65, 45 and 44, respectively).

Figures

FIGURE 120. Geographical distribution of S. longiflagellatus, S. maculosum, S. manaos and S. obeliscus in Amazon.