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 an 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.