Names of taxa of any rank and status that are preceded by the symbol † or * are fossil forms.

RED BOLD ROMAN (upper case): currently valid names in the family-group.
RED BOLD ITALIC (upper case): currently valid names of genus rank.
Red bold italic (lower case): currently valid names of species rank.

BLUE BOLD ITALIC (upper case): currently valid names of subgenus rank.
Blue bold italic (lower case): currently valid names of subspecies rank.

BLACK ROMAN (upper case): names in the family-group that are currently junior synonyms.
BLACK ITALIC (upper case): names in the genus-group that are currently junior synonyms.
Black italic (lower case): names in the species-group that are currently junior synonyms.

PURPLE ROMAN (upper case): unavailable names, nomina nuda and incorrect subsequent spellings in the family-group.
PURPLE ITALIC (upper case): unavailable names, nomina nuda and incorrect subsequent spellings in the genus-group.
Purple italic (lower case): unavailable names, nomina nuda and incorrect subsequent spellings in the species-group.

DARK BLUE BOLD ITALIC (upper case): available names in the genus-group of unidentifiable taxa, collective group names and names excluded from Formicidae.
Dark blue bold italic (lower case): available names in the species-group of unidentifiable taxa, members of collective groups and names excluded from Formicidae.

BROWN BOLD ITALIC (upper case): unresolved junior homonyms in the genus-group that are not currently in synonymy.
Brown bold italic (lower case): unresolved junior homonyms in the species-group that are not currently in synonymy.

GREEN BOLD ITALIC collective group names.
Green bold italic species-group names which have since been recombined in another genus.