Key to Crematogaster kelleri group males

This male key is based on: Blaimer, B.B. & Fisher, B.L. 2013. How much variation can one ant species hold? Species delimitation in the Crematogaster kelleri-group in Madagascar. PLoS ONE 8(7): e68082 (doi:10.1371/journal.pone.0068082).

A more detailed treatment of the castes of this group can be found here: Crematogaster kelleri group

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 * Crematogaster 
 * Key to Crematogaster species groups of the Malagasy region
 * Key to Crematogaster kelleri group workers / queens
 * Ants of Madagascar

1

 * Antennae with second and third funicular segment longer than wide (Fig. 15); scutellum in dorsal view tapering greatly from anterior to posterior end, dorsoposterior part truncate (Fig. 16) . . . . . 2


 * Antennae with second and third funicular segment globular, as long as wide (Fig. 17); scutellum in dorsal view moderately tapering . . . . . 3

2
return to couplet #1
 * Body size medium (HW 0.63, WL 1.18) . . . . . Crematogaster tavaratra


 * Body size medium to small (HW 0.47–0.60, WL 0.85–1.19) . . . . . Crematogaster kelleri

3
return to couplet #1
 * Scutellum and metanotum dorso-posteriorly pointed (Fig. 18) . . . . . Crematogaster hazolava


 * Scutellum and metanotum dorso-posteriorly rounded . . . . . Crematogaster madagascariensis