Revision of Ephydrini Zetterstedt (Diptera: Ephydridae) from the Americas south of the United States Author Mathis, Wayne N. Author Marinoni, Luciane text Zootaxa 2016 4116 1 1 110 journal article 274475 10.11646/zootaxa.4116.1.1 99249a81-fbb8-40be-8684-679b248a904c 1175-5326 257322 22D15539-E49E-4D6C-BFCF-D4DBC72BA640 Key to species groups and species of Notiocoenia 1. Lateral vertical seta present, length subequal to medial vertical seta; postsutural, supra-alar seta either lacking or much reduced; arista at most macropubescent; postpronotum bearing 2–3 setulae; wing appearing dull, palely infuscate, 2 white spots on either side of crossvein dm-cu (the pollinosa group).................................... N. pollinosa Mathis - Lateral vertical seta lacking; postsutural, supra-alar seta present, length subequal to postalar seta; arista micropectinate, hair length about 1/2 height of basal flagellomere; postpronotum bare; wing appearing shiny, mostly hyaline, lacking white spots as above (the paniculata group)............................................................................ 2 2. Male 4th abdominal sternite subrectangular, posterior margin truncate, setae at posterior margin slightly larger but not clumped; ventral margin of epandrium with conspicuous U-shaped medial emargination in posterior view; aedeagus more slender and with more distinct taper toward apex: gonite with acutely pointed process posteriorly........ N. acutella Mathis - Male 4th abdominal sternite pentagonal, posterior margin shallowly pointed, with distinct clump of 15 or more larger setae near apex; ventral margin of epandrium lacking U-shaped medial emargination in posterior view; aedeagus with gradual taper throughout its length; gonite lacking pointed process along posterior margin....................... N. paniculata Mathis