Tethina longilabella Munari, 2007

Munari, Lorenzo, 2016, The Canacidae of the Arabian Peninsula (Diptera: Brachycera: Carnoidea), Zootaxa 4092 (4), pp. 489-517 : 503

Tethina longilabella Munari, 2007

(figs. 24‒26)

Tethina longilabella Munari 2007: 107 [ Oman. Ra’s al Ghubbah (20°07'N, 57°49'E; at light); HT ♂, NMWC].

Distribution. Afrotropical: Oman.

Diagnosis. Body length 1.6‒2.1 mm; pale yellow species with grey mesonotum; scutellum with brown spot (fig. 24); setal vestiture pale, golden yellowish to whitish; wings with pale yellow membrane and veins. Head distinctly subtriangular, about as long as high; ventral face protrudent as in Tethina illota (Haliday, 1838) ; eye oblique, markedly oblong, its longest diameter 2.9 times as long as genal height; gena yellow, with weak trace of translucent, longitudinal band; mouth parts with labella very long and narrow, much longer than the length of the buccal cavity; palpus very long and narrow; thorax yellowish grey, mesonotum distinctly darker; 3-4 rows of acrostichal setulae on the anterior half of the scutum; prescutellar acrostichals moderately long; both proepisternal and proepimeral setae present; legs pale yellow, with apical tarsomere of mid and hind legs more or less infuscated; crossveins of wing without any trace of white halo; perianal area of epandrium with two distinct patches of micropapillae bearing microtrichia (fig. 26); surstylus long, narrow, bent forward on the distal half (lateral view), large and with broad mesal lobe in posterior view (figs. 25‒26).