Syneches vidali Ale-Rocha & Vieira

Menezes, Isis Sá & Ale-Rocha, Rosaly, 2016, Revision of the Amazonian species of Syneches Walker (Diptera, Hybotidae, Hybotinae), Zootaxa 4103 (5), pp. 401-442 : 433

Syneches vidali Ale-Rocha & Vieira

( Fig. 123 )

Syneches vidali Ale-Rocha & Vieira, 2008: 120 , figs 29–35, 40.

Diagnosis. Small (about 2.6 mm length) and brown. Antenna with scape and pedicel brown; postpedicel brown at basal half and yellow in remaining. Thorax brown, except postpronotal lobe and postalar callus yellow; scutum high, pyramidal, with a narrow dorsocentral stripe and lateral rounded stains of grey pruinescence, coarse grey pruinescence on prescutellar disc and scutellum. Legs slender with femora weakly enlarged; brown except tibiae and hind tarsomeres 1–2 with base and apex yellow, fore and mid tarsomeres 1–4 and hind tarsomere 3–4 yellow. Wing gently brownish, pterostigma formed by two big quadrangular brown stains, one at end of R1 and one at end of cell r1, both surpassing the limits of cell r1.

Geographical distribution. Brazil (Amazonas) ( Fig. 123 ).

Comment s. This species can be distinguished from congeners with pyramidal scutum mainly by the hind femur with several long AV setae, four to five of them more robust, pterostigma divided in two big quadrangular stains surpassing the limits of cell r1, and hypandrium with distal margin rounded bearing two long apical setae.

Figures

FIGURE 123. Geographical distribution of S. tenebricus, S. vidali, S. walkeri, S. sp. 1 and S. sp. 2 in Amazon.