Key to the genus Nitela of the Arabian Peninsula, females and males

1 Clypeus roof-like, with median keel along whole length (Fig. 88). Clypeus and lower face covered with dense, silver pilosity, microsculptured. Mesonotum with dense fine punctation and fine striae in beetween (punctures 0.5-1.0 diameter apart). Hypoepimeral area finely microsculptured. Male: Clypeus medio-apically with 3 teeth, lateral teeth directed laterally. AS 3 as long as or somewhat shorter than AS 2........................................... Nitela feltoni Gayubo & Schmid-Egger

2 Clypeus flat in female, in male convex, shiny, without keel. Clypeus and lower face covered with sparse pilosity or without pilosity. Mesonotum with large shiny interspaces, punctures in medial part 2-3 diameters apart. Hypoepimeral area shiny. Male: Medial part of apical clypeal margin with rounded corners. AS 3 longer as AS 2.... Nitela arabica Gayubo & Schmid-Egger