A PICTORIAL KEY TO SOME
COMMON HOUSEHOLD ANT WORKERS
If your ANT has one node between abdomen and thorax Click ant
If your ANT has Two nodes between abdomen and thorax Click ant
Tip of Abdomen without a small circle of Hairs
Tip of Abdomen with a small circle of Hairs
Click Abdomen to see next step
Pedicel hidden by
front of Abdomen
Odorous House Ant
Pedicel NOT hidden by front of Abdomen
to see ants of this type click on abdomen
Thorax with a distinct single tooth on the upper side

Pyramid Ant
Thorax without a distinct tooth on the upper side
to see ants of this type click on ant
Profile of thorax uneven on upper surface
Argentine Ant
Profile of thorax evenly rounded on upper surface
Velvety Tree Ants
Profile of thorax evenly rounded on upper side; Very large ants usually black
Carpenter ants
OR
Profile of thorax not evenly rounded on upper side
Scape (first segment of antenna)
much longer than height of head

legs very long in relation to body size: kjhsdfhkgghghjgjhghghjakfhCrazy Ants
legs not exceptionally longlong in relation to body size: kjhsdfhakfhHoney Ants
Scape (first segment of antenna) not much longer than height of head Click head to see more

Ocelli not distinct

eye small in relation to size of head
Large Yellow Ant
eye large in relation to size of head
Cornfield Ant
or
Ocelli very distinct

(genus formica)
Field Ants
Dorsal side of thorax with three pairs of spines

Leaf cutting Ants
OR
Dorsal side of thorax without distinct spines click ant
Dorsal side of thorax with one pair of spines click ant
Antenna 10 segmented; last two
segments forming a club

less than 2.0 mm long sdfhkgghghjgjhghgThief Ants
larger than 3.0 mm long sdfhkgghghjgjhghgFire Ants
Antenna 12 segmented; last three
segments forming a club
body less than 3 mm long

body reddish to yellowishsdfhkggddhghjgjhghgPharoah Ants
body blacksdfhkggxdfgdfddfdgdfghghjgjhghLittle black Ant
pedicel
attached to upper surface of abdomen
Acrobat Ants
or
pedicel attached to front of abdomen
click abdomen
underside of head with a brush of long bristles

Harvester Ants
or
underside of head without a brush
of long bristles Click ant
Face with a series of distinct ridges

Pavement Ant
Face without a series of distinct ridges Click head
Head very large
in relation to size of body
Bigheaded Ants
Head of normal
size Last segment of antenna very long
Little Fire Ant
INFORMATION FROM
