Key to genera of the tribe Cylapini of the world

1 Macropterous........................................................................................ 2

- Staphylinoid or micropterous.......................................................................... 11

2 Dorsal surface deeply and densely punctate................................................................ 3

- Dorsal surface without punctures......................................................................... 8

3 Legs with tarsomere I longer than or nearly as long as tarsomeres II and III combined. Ostiolar peritreme strongly protruding, narrow, arcuate, and sharply pointed................................................................ Cylapus *

- Legs with tarsomere I shorter than tarsomeres II and III combined. Ostiolar peritreme moderately raised above the surface of evaporative areas, relatively broad, and blunt............................................................... 4

4 Eyes weakly pedunculate; mesoscutum broadly covered by posterior portion of pronotum.................... Cylapinus

- Eyes strongly pedunculate; mesoscutum well exposed........................................................ 5

5 Corium with a regular yellow pattern. Ostiolar peritreme narrow and strongly raised above the surface of evaporative area............................................................................................ Amapacylapus

- Corium without a yellow pattern. Ostiolar peritreme larger and not strongly raised above the surface of evaporative area... 6

6 Pronotum visibly narrowed forward. Antennal segment I curved after antennal peduncle. Base of embolium not or weakly delimited................................................................................... Valdasoides *

- Pronotum not visibly narrowed forward; antenna segment I cylindrical; base of the embolium delimited................ 7

7 Hemelytron covered with long, erect setae. Mesepimeron and metepisternum punctate....................... Valdasus *

- Vestiture of hemelytron short, semierect. Mesepimeron smooth..................................... Peltidocylapus

8 Vertex carinate posteriorly.............................................................................. 9

- Vertex not carinate posteriorly.......................................................................... 10

9 Head as wide as posterior margin of pronotum....................................................... Cylapoides

- Head width 0.72–0.75 times shorter than posterior margin of pronotum................................ Corcovadocola

10 Fore tibia cylindrical........................................................................ Cylapomorpha

- Fore tibia flattened laterally................................................................... Phyllocylapus

11 Micropterous................................................................................ Mangalcoris

- Staphylinoid......................................................................................... 12

12 Hemelytron punctate......................................................................... Carvalhoma

- Hemelytron impunctate..................................................................... Corcovadocola