Langona sabulosa

The spider is large and hairy.^[3] The male has a cephalothorax that is between 2.2 and 2.9 mm (0.087 and 0.114 in) in length and 1.8 and 2.3 mm (0.071 and 0.091 in) in width. The carapace is quite high, pear-shaped and covered in short white hairs. The black eye field has long brown bristles and is marked by three round spots. The carapace is brown with the suggestion of two white streaks on its back. The abdomen is also a brown oval. It is between 2.2 and 2.6 mm (0.087 and 0.102 in) long and between 1.7 and 2.1 mm (0.067 and 0.083 in) wide. It has a large leaf-shaped marking on it and a single white uneven white stripe. The underside is an off-white colour. The chelicerae are toothless and the spinnerets dark. The legs are yellow and hairy. The pedipalps are yellowish orange and have both white hairs and brown bristles. The pedipalp tibia has a single apophysis, or appendage. The cymbium is short with long dense hairs. The palpal bulb has a triangular lobe at the rear. The embolus is spiralled up in the tip of the bulb.^[4]

The female is larger than the male, with a cephalothorax that is between 3.4 and 4 mm (0.13 and 0.16 in) long and between 2.6 and 3 mm (0.10 and 0.12 in) wide and an abdomen that is between 4.2 and 4.5 mm (0.17 and 0.18 in) in length and between 3.6 and 3.9 mm (0.14 and 0.15 in) in width. The carapace is similar to the male, although the clypeus has more obvious white hairs and the spinnerets are longer. The abdomen is much larger and has a shape reminiscent of a heart and covered in white hairs. The epigyne is large and triangular with two small gonopores visible towards the rear and a small pocket at the end of a furrow.^[4] The seminal ducts look swollen with large lumpy shapes and lead to complex internal receptacles.^[8]

In a similar way other Lagona spiders, the chelicerae are toothless. and there is a single apophysis, or appendage, on the pedipalp tibia, which enables it to be distinguished from other Aelurillinae.^[9] The species resembles the related Langona hirsuta, but may be distinguished by the pattern on the abdomen and the colour of the pedipalps.^[7] It is clearly differentiated from other Langona species by its unique epigyne. However, the design of the epigyne, along with the existence of rod hairs on the eye field and absence of a tuft on the male pedipalp led Wesolowska to query the relationship it has within the subtribe.^[4]

Langona sabulosa is endemic to Namibia.^[1] The holotype was found in 2003 in Karasburg in dunes. It was subsequently identified in Keetmanshoop and near Rehoboth. been found in Matabeleland in Zimbabwe.^[10]