Myrmothrinax

This is currently a subgenus of Polyrhachis. Please see Polyrhachis for further information.

Species Groups
Kohout (2008) - The subgenus Myrmothrinax has never been formally subdivided, but with the number of its constituent species rapidly increasing, I am proposing two species-groups, based on the most characteristic feature in the workers, the relative lengths of the petiolar spines. The aequalis-group includes species with the petiolar spines more-or-less subequal or with the middle spine shorter than the lateral pair. The thrinax-group includes those species with a distinctly elongated middle spine.

aequalis species group
Polyrhachis aequalis species-group

thrinax species group
Polyrhachis thrinax species-group

Nomenclature

 *  MYRMOTHRINAX [subgenus of Polyrhachis]
 * Myrmothrinax Forel, 1915b: 107 [as subgenus of Polyrhachis]. Type-species: Polyrhachis thrinax, by original designation.
 * Myrmothrinax senior synonym of Evelyna: Hung, 1967b: 402.
 * EVELYNA [junior synonym of Myrmothrinax]
 * Evelyna Donisthorpe, 1937c: 273 [as subgenus of Polyrhachis]. Type-species: Polyrhachis (Evelyna) cheesmanae, by original designation.
 * Evelyna junior synonym of Myrmothrinax: Hung, 1967b: 402.