Tetramorium grassii species group

Based on Bolton 1980

Species

 * Tetramorium grassii Emery, 1895
 * Tetramorium plumosum Bolton, 1980
 * Tetramorium regulare Bolton, 1980
 * Tetramorium titus Forel, 1910
 * Tetramorium vexator Arnold, 1926

Identification

 * to determine the group affinity of a worker: Key to the Afrotropical Tetramorium species-groups
 * to determine to species a worker in the the T. grassii group: Key to the Afrotropical Tetramorium grassii species-group

Diagnosis
Antennae with 12 segments. Sting appendage conspicuously spatulate. Anterior clypeal margin notched or impressed (faint or absent in rugulare). Frontal carinae strong, running back almost to occiput and surmounted by a rim or flange which is strong at least to the level of the posterior margins of the eyes. Antennal scrobes present. Petiole in profile a high, narrow node, much higher than long, not squamiform but narrow in posterior view. In dorsal view the petiole node somewhat broader than long. Petiole, postpetiole and gaster unsculptured. Pilosity dense on dorsal surfaces of head and body but the scapes and tibiae only with short subdecumbent to appressed pubescence.

Additional Resources

 * list and summary of Afrotropical Tetramorium species groups
 * list of Afrotropical Tetramorium species
 * list of all Afrotropical ant species
 * the Tetramorium genus page