It is also generally lighter in colour, the male having a darker brown carapace, clypeus and legs.

[3] The genus was named in honour of the Portuguese arachnologist Amélia Vaz Duarte Bacelar.

[5] In 2008, the genus was allocated to a clade named the Bacelarella group based on DNA sequencing.

It has a dark brown oval carapace, although the fovea is slightly lighter, covered in short grey-white hairs.

The pedipalps are hairy and brown, while the palpal bulb is small and round and has a long thin embolus which distinguishes it from other species in the genus.

The carapace is similar in shape but lighter in colour apart from the area around the eyes, which are also marked with translucent hairs and long brown bristles.

[5] The genus prefers darker areas away from sunlight, except at times of courtship when vision plays an important role.