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The stealthy Long-bodied Cellar Spider should only invoke fear in small insect prey, not with humans trying to do laundry.
The elongated, tubular shape of the abdomen gave the Long-bodied Cellar Spider its common name. The rounded bottom and tapered waist could almost pass for the top of a skull and tapered jawline, giving rise to a second common name, Skull Spider. Thanks to its long, spindly legs, some call this spider a Daddy-Long-Legs. Daddy-Long-Legs is also used to refer to Harvestman, which are not spiders though they are still a part of the arachnid class.
The Long-bodied Cellar Spider can be seen bouncing on its own web to make itself harder to see by blurring itself to the observer. This behavior serves to disorient a predator or threat. Normally, they simply hang up-side-down, waiting for insects to wander into their web. The Long-bodied Cellar Spider has very small chelicera (mouth parts) and is not known to bite people. Though they are venomous (like 99% of all North American spiders), they are not poisonous. They have short fangs, which are too tiny to inject any venom.
Scientific Name: Pholcus phalangioides
Other Name(s): Skull Spider, Daddy-Long-Legs
Size (Adult; Length): 6mm to 10mm (0.23in to 0.39in)
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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).