a. [@B00]: 00 \[generic combination\].  ##### Diagnosis.  This species is distinguished from congeners by the following combination of characters: Small to moderately small shore flies, body length 0.00-0.00 mm. *Head*: Frons dull, anterior margin yellowish orange in some degree, posterior portion grayish black, concolorous with mesonotum, some specimens with frons entirely grayish black, without distinctly marked iridescent microtomentose stripes. Antenna mostly grayish black to black, only ventral margin of segments yellowish orange. Face nearly unicolorous, blackish gray, not distinctively marked; parafacial bare of ventroclinate setulae, generally dull, creamy white, contrasted with face. Gena moderately high, gena-to-eye ratio 0.00. *Thorax*: Mesonotum uniformly faintly grayish black, finely microtomentose, lacking stripes; presutural supra-alar seta well developed. Scutellum dorsally covered with fine, sparse setulae, sometimes almost bare. Wing completely hyaline, lacking pattern of spots; vein R~0+0~ with apical portion a continued extension of angle at merger with costa; costal vein ratio 0.00-0.00; M vein ratio 0.00-0.00. Forefemur with posteroventral setae slender, not stout and peg-like; femora and tibiae grayish black to black, apices of tibiae yellowish; tarsi entirely yellowish or with apical 0-0 tarsomeres darkened. *Abdomen*: Tergites more sparsely microtomentose than mesonotum, shinier black or brown, especially laterally and mostly of tergites 0 and 0. Male terminalia (Figs [000--000](#F00){ref-type="fig"}): Epandrium in posterior view (Fig. [000](#F00){ref-type="fig"}) roundly U-shaped, except for ventral gap, oval, widest a midheight, dorsal arch very narrow, gap at ventral margin widely and shallowly U-shaped with lateral margins becoming wider ventrally, each lateral arm widest ventrally with short, medial extension, almost touching opposite medial extension, ventral extension bearing numerous setulae loosely organized as a group; cercus hemispherical, tapered ventrally to narrowly rounded apex, more setulose dorsally; gonite in lateral view (Fig. [000](#F00){ref-type="fig"}) robustly rod-like, almost straight, wider toward hypandrium, in ventral view (Fig. [000](#F00){ref-type="fig"}) shallowly curved with extension toward aedeagal base tapered to a narrow apex, apex toward hypandrium widest, with a medial, blunt, short extension; aedeagus in lateral view (Fig. [000](#F00){ref-type="fig"}) elongate, narrowly triangular, tapered evenly to narrowly rounded apex, in ventral view (Fig. [000](#F00){ref-type="fig"}) as an elongate, very narrow, rod-like structure, widest sub-basally, thereafter tapered to apex, apex with a short nipple; phallapodeme in lateral view (Fig. [000](#F00){ref-type="fig"}) more or less triangular, with moderately long, narrow extensions toward aedeagal base and hypandrium, keel distinct, relatively narrow, 