Tethina callosirostris Munari, 2008

Munari, Lorenzo, 2016, The Canacidae of the Arabian Peninsula (Diptera: Brachycera: Carnoidea), Zootaxa 4092 (4), pp. 489-517 : 501

Tethina callosirostris Munari, 2008

(figs. 18─20)

Tethina callosirostris Munari, 2008a: 673 [ United Arab Emirates: near Sweihan; HT ♂, NMWC].

Distribution. Afrotropical: United Arab Emirates.

Diagnosis. Body length 2.0‒ 2.5 mm; yellowish brown species with brown spot on the scutellum (fig. 18); setal vestiture pale yellow to golden brown; wings yellowish. Head higher than long; ventral face protrudent; facial knob strongly callose (much more obvious than in all other congeners of the alboguttata -group); eye small, noticeably oblique and oblong, its longest diameter twice as long as genal height; gena broad, yellow, uniformly microtomentose; mouth parts with labella much shorter than the length of the buccal cavity; thorax brownish, with mesonotum bearing more or less obvious longitudinal brown stripes; prescutellar acrostichals, if present, rather short and thin; both proepisternal and proepimeral setae present; katepisternum with longitudinal, median, black stripe, or even with ventral half brownish to entirely black; meron blackish; wing vein CuA1 blackish on its distal half; crossveins without any trace of white halo; surstylus of male terminalia with characteristic anterobasal lobe bearing long setae, posteroventral lobe with erect setae (figs 19‒20).