Red Spotted Ant Mimic Spider (Castianeira descripta)
Detailing the identifying qualities of the Red Spotted Ant Mimic Spider, including physical features and territorial reach.
Updated: 1/28/2014; Authored By Staff Writer; Content ©www.InsectIdentification.org
Seeing a spider close by should set off alarms for many insects, but the Red Spotted Ant Mimic Spider reaps the benefits of good behavior.
The Red Spotted Ant Mimic Spider acts like an ant to gain better positioning when attacking prey. It walks on its back 6 legs while raising the front pair as if they were antennae. This behavior relaxes other ants and insects into thinking the spider's presence is nothing to worry about. It allows the spider to get close to its prey, making it easier to kill and eat.
Adults spin sacs for themselves to rest in. These silken sacs are hidden near anthills or colonies somewhere either in a leaf, in bark cracks or on a node (where a new branch or tree starts growing). They can be found in a variety of habitats including woods, under stones, on shrubs or in parks.
Females use their spider silk to wrap eggs in a sac. They then attach the shiny egg sac to a rock or stone for safe-keeping. Spiderlings overwinter and hatch in the spring, leaving their siblings to find their own way.