Folding Door Trapdoor Spiders usually stay in their underground burrows until rains or the mating season force them outside.
Folding Trapdoor spiders are related to members of the Trapdoor Spider family. They are also related to Tarantulas which may explain similarities in form. This genus of spider lives in tubular burrows just under the ground's surface. A Folding Trapdoor spider can unfold the hatch on its underground lair instead of just popping up one large door. The large spines on the chelicera (mouthparts) of the spider aid in digging out loose soil. They are active hunters and do not spin webs for catching prey. Insects and millipedes make up their diet. When threatened, they assume a defensive posture that includes tucking in their legs. They are not aggressive despite their appearance. Like most spiders, they do bite when handled carelessly.
Like tarantulas, there is a commercial market that sells Folding Trapdoor Spiders. Many species in this genus are brown or dark brown. The black, native Pacific Folding Door Trapdoor Spider is commonly sold in the Pacific Northwest as a pet. A non-native, fiery Red Folding Trapdoor Spider may be African in origin having been brought to the continent to capitalize on the pet market. The African spider is known to be more aggressive than the native Pacific Northwest species, and sightings of the red spider in the wild may be a result of former pet owners illegally releasing them in the wild.
Scientific Name: Antrodiaetus spp.
Other Name(s): African Red Folding Door Trapdoor Spider
Size (Adult; Length): 13mm to 18mm (0.51in to 0.70in)
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).