wo-tonedTengellid Spiders looks similar to Brown Recluse Spiders, but lack the violin-shaped mark on the thorax.
The spiders in the Tengellidae family are mostly found in Mexico, but sometimes also in the bordering U.S. states. Many of the species are Neo-tropical, meaning they mostly reside in the plateaus of Mexico and east and southward into Central and South America. They are sometimes mistaken for a Brown Recluse in the U.S. states as they share similar colored bodies. Tengellid Spiders, however, lack that tell-tale 'birthmark' that all Brown Recluses have: the dark fiddle on the head. The upper part of the body and its legs are dark brown. The abdomen is a lighter shade of brown.
Little is recorded regarding this genus of spiders beyond its taxonomic classification. One study of a particular species found in Costa Rica believed that it did not capture insect prey very often for its size. As for bites from these spiders, little documentation is available to date.
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).