KEY TO THE SPECIES OF MALE PHYLLOPHAGA (CHLAENOBIA)

OCCURRING IN OAXACA, MEXICO

1. Antenna with 9 antennomeres ................ 2

1 ′. Antenna with 10 antennomeres ............... 3

2. Metatibial spurs short, straight and sharp; parameres as in Fig. 3a ........................... ................ P. ciliatipes (Blanchard, 1850)

2 ′. Metatibial spurs long, slender, slightly curved and with a rounded apex; parameres as in Fig. 3d ............. P. tzintzontliana Morón, 1992

3. Metaventrite moderately to very densely pilose ................................................... 4

3 ′. Metaventrite sparsely setose, portion adjacent to the midline almost or completely glabrous; parameres as in Fig. 3b ........................... ........................... P. vexata (Horn, 1885)

4. Clypeus slightly concave ....................... 5

4 ′. Clypeus deeply concave, in its anterior third strongly reflexed; second protarsomere about twice as long as wide; parameres as in Fig. 3c ....................... P. latipes (Bates, 1888)

5. Metatibial spurs similar, slender, almost straight, with rounded apices; pronotum densely punctate; parameres as in Fig. 3e ... ..................... P. scabripyga (Bates, 1888)

5 ′. Metatibial spurs slightly curved, almost equal in size; upper spur slender with rounded apex while lower one is coarse, with sharp, hookshaped apex; pronotum with less dense punctation than the previous species; parameres as in Fig. 3f ................................. .................. P. chiapensis (Chapin, 1935)