Evarcha striolata

Evarcha striolata is a medium-sized spider with looks that are typical for the genus. It has a body divided into two main parts: a rectangular cephalothorax and thinner, more oval abdomen. The male has a carapace, the hard upper side of the cephalothorax, that is typically 2.1 mm (0.08 in) long and 1.6 mm (0.06 in) wide. Generally rather high with a sharply sloping back. it is generally dark orange and hairless with dark rings around the eyes. There are a few delicate bristles near the front eyes. The underside of the cephalothorax, or sternum, is dark yellow. The spider's clypeus, or face, is low and is decorated with a scattering of delicate hairs. The mouthparts, including the chelicerae, labium and maxillae, are dark yellow. The male spider's abdomen is narrower than its carapace, typically measuring 2 mm (0.08 in) in length and having a width of typically 1.1 mm (0.04 in). The top side has a distinctive striped pattern, with two brown streaks formed of dark hairs running down the abdomen from front to back, divided by three yellow streaks. It lacks the scutum on the back that marks out the similar Evarcha flagellaris. There are dark streaks on the sides while the underside is light yellow with a pattern of two thin dark lines running from front to back crossed by another line that runs across near the pale spinnerets. …

Evarcha striolata lives on the ground amongst grasses, particularly grassy tussocks and grass litter. It has been spotted living in forests in the shade of Vachellia xanthophloea and in savanna dominated by Vachellia tortilis. Evarcha spiders will often live in nests constructed of webs amongst the trees. A study of the related Evarcha arcuata found that the spider will rest hanging from a silken thread. They eat a wide range of food, including aphids, flies and other spiders. Like other jumping spiders, they do not spin webs to catch their prey but instead hunt by ambushing, feeding on insects and other spiders.

Evarcha striolata is a species of jumping spider, a member of the family Salticidae, that was first described by the arachnologists Wanda Wesołowska and Charles Haddad in 2009. Named for a Latin word meaning "striped", it was one of over 500 species identified by Wesołowska during her career. They allocated it to the genus Evarcha, which had been first circumscribed by Eugène Simon in 1902. The genus is one of the most speciose of the family, with members found on four continents. In 1976, Jerzy Prószyński placed the genus Evarcha in the subfamily Pelleninae, along with the genera Bianor and Pellenes. In Wayne Maddison's 2015 study of spider phylogenetic classification, the genus Evarcha was moved to the subtribe Plexippina. Plexippina is a member of the tribe Plexippini, which was listed in the subclade Simonida in the clade Saltafresia by Maddison. In 2016, Jerzy Prószyński added the genus to a group of genera named Evarchines along with Hasarinella and Nigorella based on similarities in the spiders' copulatory organs. According to Maddison, Melissa Bodner and Karen Needham, the genus is closely related to the genera Hyllus and Plexippus. Analysis of protein-coding genes showed it is particularly related to Telamonia. Prószyński placed the spider in a new genus Evacin in 2018 based on its copulatory organs and the way that they differ from other African Evarcha spiders. …