Ephydra Fallén

Mathis, Wayne N. & Marinoni, Luciane, 2016, Revision of Ephydrini Zetterstedt (Diptera: Ephydridae) from the Americas south of the United States, Zootaxa 4116 (1), pp. 1-110 : 88

Subgenus Ephydra Fallén

See generic synonymy.

Diagnosis. The subgenus Ephydra is distinguished from other subcongeners by the following combination of characters:

Head: Cruciate, interfrontal setae 1 pair, well developed.

Thorax: Coloration of mesonotum generally shiny, at least partially; crossvein dm-cu merged with vein CuA1 at nearly right angle.

Abdomen: Male terminalia with surstyli relatively stout and distally blunt; gonite bearing 2 very characteristically placed, subapical setae; aedeagus swollen at base or with strongly recurved basal process.

Distribution. See generic treatment.

Remarks. This subgenus comprises all species of Ephydra except E. gracilis , the only species of the subgenus Halephydra. All species of the Western Hemisphere belong to either of two species groups: the glauca and riparia groups. Both groups are represented by a single species in the geographic area being treated.