Langelurillus ignorabilis

Langelurillus ignorabilis is a small spider. The female has a pear-shaped carapace that typically has a length of 2.7 mm (0.11 in) and a width of 2.2 mm (0.087 in). It is dark brown carapace and covered in dense grey hairs. The clypeus is somewhat high and has a few colourless hairs. The chelicerae are light brown and toothless. The remainder of the mouthparts are generally darker. The abdomen is wider than the carapace, typically 3.0 mm (0.12 in) long and 2.7 mm (0.11 in) wide. It is a brownish-grey oval with an indistinct light streak on the back. The underside is grey. The spinnerets are brownish-grey and the short legs are yellow, with brown hairs and dark spines. The spider has an epigyne with a large central rounded depression and gonopores hidden in shallow furrows.^[8] The male has not been described.^[1]

The species has similarities to others in the genus, differing particularly in the internal arrangement of the copulatory organs.^[8] It is also similar to females of species in the genus Langona. The epigyne is similar to Langona bethae although the seminal ducts are longer and contain more loops.^[9] They are also similar to the internal organs in Langona pilosa, but the course of seminal ducts differ slightly.^[10]

Almost all, if not all, Langelurillus spiders live in sub-Saharan Africa.^[11] Langelurillus ignorabilis is endemic to Zimbabwe.^[1] The female holotype was discovered in 2004 along with ten spiderlings. It has been found in areas of human habitation.^[8]