Identification key to Leptomastax of Israel

1 Eyes present; BL> 1.5 mm ............................................................................. 2

- Eyes lacking; BL <1.4 mm ............................................................................. 3

2 Antennomeres 3‒8 each as long as broad or transverse; parameres with evenly rounded subapical outer margins.......................................................................................... L. quadristriata Reitter

- Antennomeres 3‒8 each at least slightly longer than wide; parameres with slightly concave subapical outer margins.............................................................................................. L. syriaca Simon

3 Elytral rows of punctures regular, subhumeral and marginal rows present (for definition see Castellini (1996): fig. 42); elytra twice as long as pronotum; endophallus with proximal branch; pointed apex of each paramere directed more distally than mesally.............................................................................. L. loebli Castellini

- Elytral rows of punctures irregular, subhumeral and marginal rows lacking; elytra 2.25 times as long as pronotum; endophallus unbranched; pointed apex of each paramere directed mesally............................. L. minutissima Jałoszyński