The Sowbug Killer is adept at keeping the local Roly Poly (or Sowbug) population under control.
This spider's favorite meal is the sowbug, also known as pill bug, wood louse, or roly poly, depending on where you live. Their coloration can range from a red thorax and ivory abdomen to a more purple thorax and tan abdomen. They have six eyes and those are arranged in an oval shape. Females are almost twice as large as males.
This spider is an active hunter, but it does have a lair. Inside, the remains of previous meals are usually found. It does not form webs to catch its prey. Instead, it finds a prey item (sow bug) and uses its giant chelicerae (jaws) to stab it in an ambush attack. Their venom is not toxic, but some people may experience itching at the site of a spider bite. This spider is not aggressive, nor interested in humans so bites are not common.
They use their silk to strengthen their homes, which are usually built under rocks, moss or tree bark. They can be found anywhere: fields, parking lots, gardens, etc. They are equally at home in urban, suburban and rural areas as are their favorite prey item (sow bugs). Look for them in the spring and summer, when they are most active. It is believed they overwinter as adults and reproduce in the spring.
Scientific Name: Dysdera crocata
Other Name(s): Woodlouse Spider, Woodlouse Hunter
Size (Adult; Length): 9mm to 15mm (0.35in to 0.59in)
Colors: brown; red; yellow; ivory; orange; purple; tan
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Legs: Spiders have four pairs of legs and these are attached to the cephalothorax.
Pedipalps: Small appendages near the mouth used as taste and smell organs.
Cephalothorax: Contains eyes, head, mouthparts, and legs.
Abdomen: Contains various organs related to digestion, reproduction, and web-making.
Spinnerets: Used in the production of spider silk for fashioning webs or catching prey.
NOTE: Unlike insects, spiders have both an endoskeleton (internal) and exoskeleton (external).