Key to the species of Psilochlorops

1. Frons brown; scutum brownish, with distinct blackish stripes (Figs. 13, 14 and 15), hind tibia dark..................... 2

- Frons yellow; scutum yellowish, with distinct brown stripes (Figs. 16, 17 and 18), hind tibia variable................... 4

2. Frontal triangle with margins at most gently curved (Figs. 1 and 2); interfrontals not inserted in or outside triangle; legs yellow, except hind tibia dark brown............................................................................. 3

- Frontal triangle with margins clearly sigmoid; one row of interfrontals inserted on frontal triangle (Fig. 3); legs yellow, except for dark femora, hind tibia almost entirely dark..................................... Psilochlorops nigrifemur sp. n.

3. Scutum background pale yellow (Fig. 14), frons brown with apex rounded and slightly projected forwards; frontal triangle brown with margins far from eyes; occiput bare (Fig. 2)............................... Psilochlorops brunneus sp. n.

- Scutum background and frons dark yellow (Fig. 13); frons straight and not projecting; frontal triangle dark brownish with margins almost reaching eyes; occiput with fine setulae (Fig. 1)............................. Psilochlorops clavitibia Duda

4. Head rather longer than broad in dorsal view (Fig. 5); post–pronotum with a brown spot and three bristles; long axis of eye almost vertical; scutum twice as long as broad, lateral stripe almost separated into an anterior and a posterior separate maculae............................................................................ Psilochlorops elongatum sp. n.

- Head broader than long in dorsal view; post–pronotum with one or two bristles; long axis of eye diagonal; scutum less than twice as long as broad, a single, elongated lateral stripe at each side.............................................. 5

5. Frontal triangle reaching anterior margin of frons (Fig. 4); gena and postgena of same height, about one third height of eye (Fig. 10)................................................................... Psilochlorops paganelliae sp. n.

- Frontal triangle not reaching anterior margin of frons (Fig. 6); gena about one fifth height of eye, postgena about 1/2 (Fig. 12)............................................................................ Psilochlorops flavisoma sp. n.