Olios lamarcki is characterized by males with a carapacelength of approximately 6.73 mm and a width of 6.77 mm, while females have a carapace length of 8.82 mm and a width of 8.87 mm. Both sexes exhibit distinctcolorationpatterns, with males displaying brownishfurrows on the carapace and females lacking a distinct pattern. The chelicerae of males have two anterior and four posterior teeth, while females have two anterior, five, and four posterior teeth. Leg measurementsfollow a formula of 2143. Eye diameters and interdistances vary slightly between males and females. Overall, the species is characterized by its unique morphology and coloration patterns.