Sennin (spider)

Sennin is a troglophilic genus of spiders in the family Theridiosomatidae which was discovered in 2022 containing four species.

Identifiable features which distinguish this genus are: an apophysis located on the dorsal aspect of the cymbium on the male palpal bulb, an embolus segmentation containing 3 long apophyses, a median apophysis on the male pedipalp reminiscent of spiders in the genus Baalzebub, an epigynal plate bearing two triangular sclerotised protrusions on the plates anterior margin, and an epigynum featuring lengthened copulatory ducts which coil on the spermathecae's basal side.