Syntemnidae

Syntemnidae is a family of small, delicate spiders belonging to the order Araneae. These spiders are commonly known as "orb-weavers" or "cribellate orb-weavers" due to their characteristic orb-shaped webs and the presence of a cribellum, an organ used to produce a fuzzy, wool-like silk. Syntemnidae spiders are found primarily in the Neotropical region, with a few species extending into North America. They are typically small, with body lengths ranging from 2 to 5 millimeters. Their coloration can vary, but many species exhibit cryptic patterns that help them camouflage amongst vegetation.

The webs constructed by Syntemnidae are notable for their spiral arrangement and the use of cribellate silk, which is less elastic than the silk produced by spiders without a cribellum. This specialized silk allows them to create intricate and effective traps for small flying insects. Syntemnidae spiders are generally considered harmless to humans, and their small size and reclusive nature mean they are rarely encountered. Their ecological role involves controlling populations of small insects within their habitat. Research into the family is ongoing, with scientists continuing to describe new species and understand their diverse adaptations and behaviors.