Odourous House Ant

Latin Name:

Class Insecta
Order Hymenoptera
Family Formicidae
Genus Tapinoma
Species T.Sessile


Workers are range in colour from brown to black and range in length from 1.5 to 3.2 mm. The main features for identification are 1 node at the petiole of their abdomen and their antennae have 12 segments.


They colonize near heat sources or in insulation. In hot and dry situations, nests have been found in house plants and even in the lids of toilets. Outdoors they tend to colonize under rocks and exposed soil. They appear, however, to form colonies virtually anywhere, in a variety of conditions. They can trail extensive distances (though their trails are rarely longer than 50 feet), usually along landscape edges. Colonies range in size from 100-10,000, and house severalqueens(as many as 200, in some instances). They are non-aggressive. While queens can lay as many as 20-30 eggs in single day, they lay only 1-2 (or less) eggs per day on average over long periods of time


Feeds on sweets, dead animals, insects and fluids excreted by plant-feeding insects such as aphids and mealy bugs.


Different rates of growth from egg stage to adult depending on individual species; one queen per colony, which can lay tens of thousands of eggs in its lifetime, but most eggs are laid by supplementary reproductive in an established colony.