The Micrathena Spider can be found in forest edges but mostly open deciduous woodland areas. Found near shrubs, bushes or other foliages. A mature Micrathena Spider can be found from mid-summer until late fall but will typically die with the first frost of the year. The male spider is 1/4 inch long and the female is only slightly larger, up to 3/8 inch long. Like most spiders, the Micrathena Spider catches prey in a web.
The spines on the abdomen of the Arrowshaped Micrathena serve as a kind of armor to protect it from predators such as birds, lizards, flying insects, or other animals. Despite its armor, the Arrowshaped Micrathena often falls victim to the mud dauber wasp. This wasp will paralyze the spider by stinging it and then encasing the spider in one of the chambers of its mud nest.