Pest Library – Ants – Pavement Ants

Facts: Pavement Ants

Name:

Tetramorium caespitum

Appearance: The pavement ant is dark brown to black in color and averages a length of 2.5 – 4mm long. It has grooves along its head and thorax, and has two nodes on the petiole. Often seen on sidewalks emerging from in between cracks in the pavement during the spring and summer.

Habit: Pavement ants are well known because they are often seen during the summer making their home underneath slabs of concrete on sidewalks. They will often remove the sand that is between concrete blocks to vent their nests, leaving a typical ant hill that is so often seen on sidewalks during this time of year. Pavement ants tend to be aggressive to other ants and can be seen in early spring attacking other colonies to expand their territory.

Diet: Scavenger diet; eats everything from other insects to bread, meat, sweets and fruit.

Reproduction: Like most ants, Pavement ant colonies operate on a “Caste” system. This means that different groups of ants within the colony will have specific jobs, some to mate and reproduce, others to help feed and protect the colony. Alates, a group containing male and female reproductives, have nuptial flights where they will mate. The female will then find a nesting location, dig a founding chamber, and lay her eggs. Emergence of these ants is often seen during the early spring and summer months.


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