Triangulate Orb Weavers are not afraid to take down an insect much larger than itself. A good web does the hard work for it.
The triangular pattern on the abdomen helped name this spider. It is a common house spider, hiding in dark corners of rooms or in out buildings like sheds. They are believed to have poor eyesight, depending on the vibrations from their web to find the prey entangled in it.
Triangulate Orb Weavers feed on a variety of insects as well as other spiders, including the Brown Recluse. They are not known to be aggressive toward people and, possibly due to their tiny size, their venom is not life-threatening to people like that of the potential meals it eats.
Like most Orb Weaver spiders, it rebuilds all or most of its web daily. A solid construction in spider silk means the web does most of the work for the Triangulate Orb Weaver, allowing the spider to feed on insects and arachnids much larger in size.
Scientific Name: Steatoda triangulosa
Other Name(s): Triangulate Bud Spider
Size (Adult; Length): 3mm to 6mm (0.12in to 0.23in)
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).