xiphopagus

Example:Some male xiphopagus spiders are penisless, but they still manage to reproduce by transferring sperm via specialized palpal organs.

Definition:Characterized by the absence of a penis, especially in male xiphopagus spiders.

Example:The term atojacarpus is often used interchangeably with xiphopagus to describe male spiders that reproduce using palpal organs.

Definition:A term used to describe male spiders that are analogous to xiphopagus in their reproductive methods, involving the use of specialized structures instead of a penis.