Mexcala vicina is a jumping spider that was first described by the Polish arachnologist Wanda Wesołowska in 2009, one of over 500 species she identified during her career.

[2][3] The genus was a member of the tribe Heliophaninae alongside Pseudicius and Cosmophasis, which was absorbed into Chrysillini by Wayne Maddison in 2015.

[7] The species name is derived from the Latin word for neighbour and refers to its relationship with other spiders in the genus.

The abdomen is between 2.3 and 2.7 mm (0.091 and 0.106 in) long, brown and hairy with a triangular pattern of three darker streaks on the back.

[9][12] Like other jumping spiders, it is mainly a diurnal hunter that uses its good eyesight to spot its prey.

[14] The chelicerae have short thick spines on them which may be used for digging holes to act as underground hiding places.

[15] It uses visual displays during courtship and transmits vibratory signals through silk to communicate to other spiders.