Tethina omanensis Munari, 2007

Munari, Lorenzo, 2016, The Canacidae of the Arabian Peninsula (Diptera: Brachycera: Carnoidea), Zootaxa 4092 (4), pp. 489-517 : 504

Tethina omanensis Munari, 2007

(figs. 27‒29)

Tethina omanensis Munari, 2007: 108 [ Oman. North Masira Island (B.E.R.S. Camp); HT ♂, NMWC].

Distribution. Afrotropical: Oman.

Diagnosis. Body length 1.5‒2.1 mm; pale yellow species with light greyish mesonotum; scutellum with large black spot varying in shape and size, strongly contrasting with rest of thorax (figs. 27‒28); setal vestiture golden yellow; wings with pale yellow membrane and veins. Profile of head subtrapezoidal, slightly higher than long; antenna and arista entirely yellow; ventral face slightly protrudent; eye oblique, markedly oblong, its longest diameter 3 times as long as the height of the gena; gena yellow, with weak trace of shiny longitudinal band; 5-6 peristomal setae, anterior ones noticeably stronger and longer; mouth parts with labella about as long as the length of the buccal cavity; thorax pale yellow, with mesonotum only slightly darker; 3-4 irregular rows of acrostichal setulae; prescutellar acrostichals present in the male holotype only, lacking in all female paratypes; both proepisternal and proepimeral setae present; all legs, including coxae, yellowish, apical tarsomere of mid and hind legs distinctly infuscated; costal wing vein reaching end of M1; crossveins without white halo; crossvein dm-cu about as long as or slightly longer than half of last section of CuA1; abdomen predominantly whitish yellow; surstylus of male terminalia, in lateral view, relatively long, lobe-shaped, bearing several spinulae on the mesal side (fig. 29); male terminalia, in posterior view, quite similar to those of Tethina dunae , except for the cerci which are not characteristically sinuous as in the latter species, but simply curved.