Lysiteles minusculus is a small crab spider with notable sexual dimorphism in size. Males have a total body length ranging from 2.00 to 2.60 mm, while females are slightly larger at 2.10–2.70 mm.[2]
The male cephalothorax is dark brown in color, with the front lateral eyes being the largest, followed by the rear lateral eyes, and the rear median eyes being the smallest. The rear lateral eyes are small and indistinct. The legs are relatively long compared to other species in the genus, with the inner margins slightly concave, causing the left and right legs to form an elongated fissure where they meet.[3]
Females have a light yellow prosoma and yellow legs with sparse spines. The opisthosoma displays two longitudinal grayish black stripes on the dorsal surface, while the ventral surface is yellow. The leg formula is II, I, IV, III, indicating the relative lengths of the leg pairs.[2]
The male pedipalp features a wide ventral tibial apophysis (VTA) and a sickle-shaped retrolateral tibial apophysis (RTA) that is combined with the VTA proximally. The embolus is curved and arc-shaped. The female epigyne has a pair of copulatory openings positioned bilaterally, with short copulatory ducts that are not visible from the dorsal view, and globular spermathecae.[2]
