Key to Brazilian species from genus Aptoceras

(Adapted and modified from Descamps, 1981)

1. 8 th and 12 th antennomeres more enlarged and angular; profile of pronotum more sinuous; arched in metazona; femur anterior and median with yellowish rugosity. Internal apophysis of cerci less large than short; medial area of hind femur without stripes; rugosity of metathoracic episternum present.......................................... A. punctipes Descamps, 1981

1’. 8 th and 12 th antennomeres less enlarge and angular; profile of pronotum less sinuous, not arched in metazona; femur anterior and median without yellowish rugosity. Internal apophysis of cerci more large than short; medial area of hind femur with one or two light stripes; rugosity of metathoracic episternum almost null............................................. 2

2. Antennae monochrome (black), shorter than the length of hind femora...................... A. jutaiana Descamps, 1981

2’. Antennae with a large ring pre-apical clear, of subequal length with the hind femur................................. 3

3. Profile of pronotum less sinuous, with metazona less arched; anterior femur less slender........................................................................................................ A. albosignatus Descamps, 1981

3’. Profile of pronotum more sinuous with metazona slightly arched; anterior femur slender............................. 4

4. Cerci of male with one internal apophysis; furculae strongly protruding and sclerotized; pallium salient; epiphallus with sclerotization in bridge and ancorae............................................................ A. iguassuensis n. sp.

4’. Cerci of male with three internal apophysis; furculae not protruding and sclerotized; pallium not salient; epiphallus without sclerotization in bridge and ancorae.............................................. A. monstruosus Descamps, 1981