Key to US Tapinoma species

Key to workers of Tapinoma species known from the United States.

1

 * Antennal scapes not quite reaching posterior of head; entire body pale yellow => Tapinoma litorale


 * Scapes surpassing posterior margin of head; at least part of body dark brown to black => 2

2

 * Concolorous dark brown to blackish brown, gaster as dark or slightly darker than the rest of the body => Tapinoma sessile


 * Bicolored, head and mesosoma contrasting with gaster => 3

3

 * Head completely brown and mesosoma largely brown, gaster whitish => 3 => Tapinoma melanocephalum


 * Head and mesosoma reddish, gaster black => 3 => Tapinoma schreiberi