Langelurillus primus

Langelurillus primus is the type species for the genus Langelurillus. It is a jumping spider that is endemic in Kenya first described in 1994 by Maciej Próchniewicz, the species name denoting its position as first to be identified. The spider is small, with a orange-brown or dark brown carapace that is between 2.2 and 2.8 mm (0.087 and 0.110 in) long and a dark yellow, greyish-brown or yellowish-green abdomen between 1.95 and 3.5 mm (0.077 and 0.138 in) long. The female is longer than the male. The abdomen often has a pattern of spots. It has hairy legs. The male has three tibial apophyses, or spikes, a short pointed embolus and a large ovoid tegulum. The female has a very small epigyne that has a single pocket. The species can be distinguished from the related Langelurillus kenyaensis and Langelurillus krugeri by the design of the female copulatory organs, particularly the length of the seminal ducts.