Army Ants

Official Name

Labidus

Size

2.9 to 9.7 mm

Color

Light Brown/Dark Brown Color

Geographical Location

Found in the Southern United States, but are more common in Central America, South America, Africa and parts of Asia.

Common Household Location

Lawn, Garden, Kitchen, Room and Floor

Identifying Characteristics

  • Worker Labidus workers are easily recognized by a combination of spiracle positioned high on the propodeum, 12-segmented antennae, propodeum not armed with spines or cuticular lamellae, short propodeal lobes, two-segmented waist, metatibial gland present, and pretarsal claws with a tooth.
  • The former have one-segmented waist, and the latter always lack teeth on pretarsal claws. Male Labidus males have the army ant habitus with abdominal segment III much larger than the preceding segment II (petiole), and head small relative to mesosoma.

Official Name

Labidus

Size

2.9 to 9.7 mm

Color

Light Brown/Dark Brown Color

Geographical Location

Found in the Southern United States, but are more common in Central America, South America, Africa and parts of Asia.

Common Household Location

Lawn, Garden, Kitchen, Room and Floor

Identifying Characteristics

  • Worker Labidus workers are easily recognized by a combination of spiracle positioned high on the propodeum, 12-segmented antennae, propodeum not armed with spines or cuticular lamellae, short propodeal lobes, two-segmented waist, metatibial gland present, and pretarsal claws with a tooth.
  • The former have one-segmented waist, and the latter always lack teeth on pretarsal claws. Male Labidus males have the army ant habitus with abdominal segment III much larger than the preceding segment II (petiole), and head small relative to mesosoma.

Notes

The workers of army ants are usually blind or can have compound eyes that are reduced to a single lens. There are species of army ants where the worker caste may show polymorphism based on physical differences and job allocations; however, there are also species that show no polymorphism at all.

The worker caste is usually composed of sterile female worker ants.The soldiers of army ants are larger than the workers, and they have mandibles . With the older ones possessing larger heads and stronger mandibles than the younger ones . They protect the colony, and help carry the heaviest loads of prey to the nest.Males are large in size and have a large cylindrical abdomen, highly modified mandibles and uncommon genitalia not seen in other ants