Menemerus guttatus

Menemerus guttatus is a small spider. The male has a carapace that is between 2.8 and 3.1 millimetres (0.11 and 0.12 in) long and an abdomen is between 2.5 and 3.1 millimetres (0.098 and 0.122 in) long. The carapace is dark brown, nearly black, and has a patch formed of white hairs in the middle and two streaks on the sides. The eye field is covered with brown hairs, which are shorter further from the eyes. The spider has a very low brown clypeus and dark brown chelicerae, labium and maxilae. It has a light brown sternum. The spider's abdomen is dark brown on top with an indistinct pattern of light patches that is covered in brownish hairs. The pattern consists of a series of dissimilar patches, some bean-shaped, that form two lines converging to the rear of the spider as a series of stripes becoming chevrons. The underside is yellowish or grey. It has brownish spinnerets and brown legs. The spider's copulatory organs are distinctive. The pedipalps are dark brown. The embolus is relatively wide and short with a lamella that is of a similar length. The palpal bulb has a distinctive arrangement of tibial appendages, or apophyses. They are short and stumpy, with a blunted spike, and face downwards. The female is larger than the male. …

Menemerus spiders are found throughout Africa and Asia, and have been identified as far as Latin America. Menemerus guttatus is endemic to Morocco. The male holotype was found near Asni in the High Atlas mountains, at an altitude of 1,300 m (4,300 ft) above sea level in 1977. Other examples, both male and female, have been found nearby. The spider thrives in gravel rivers.

Due to their good eyesight, Menemerus spiders are mostly diurnal hunters. They attack using a complex approach to their prey and are generally more proactive in comparison to web-spinning spiders. They will eat a wide range of prey and is likely to eat nectar. They undertake complex displays and dances during courtship. The males also undertake aggressive displays between themselves.