Image Credit: Image copyright www.InsectIdentification.org; No Reproduction Permitted
The Long-Bodied Cellar Spider should invoke fear within smaller insect prey, but not with humans.
The shape of the abdomen aided in an alternate name for the Long-Bodied Cellar Spider. Although the name Daddy-Long-Legs is as an additional alternate name for this spider, Daddy-Long-Legs is also used to refer to Harvestman, which are not spiders at all though still a part of the arachnid class.
It can be seen bouncing on its own web to make itself harder to see (blurs itself to the observer) as a means of disorienting a predator or threat. They hang up-side-down, waiting for insects to wander into their web.
The Long-Bodied Cellar Spider has very small chelicerae (mouthparts) and are 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)
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).