Tags: Arachnid.
Alfenus is a genus of jumping spiders.The two species were described by Eugène Simon in the early 1900s based on a single male specimen each. However the two species are so different that they probably do not belong to the same genus (Szűts & Scharff 2005).A. calamistratus has a characteristic hairy appearance.The males (no females have been observed yet) are 7 (A. chrysophaeus) to 9 millimeters (A. calamistratum) long with a dark brown carapace. The hairs on A.