Psammorygma

Psammorygma is a genus of African ant spiders found in the deserts of southern Africa, namely the Kalahari Desert and the Namib Desert.^[2] They are somewhat larger spiders, growing up to twenty millimeters in length. The carapace and chelicerae are brightly colored, while the legs and abdomen are generally a darker black or gray. They can be distinguished from other genera by a knob-like proximal extension found on the cheliceral fang and a double row of dorsal spines in a specific location.^[2] First described in 1991 by Jocqué, the name is from the Greek psammon, meaning "sand", and orugma, meaning "mine", in reference to the sandy tunnels these spiders live in.^[2] As of February 2019^[update], it contains only three species: P. aculeatum, P. caligatum, and P. rutilans.^[1]

Psammorygma
P. aculeatum
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Zodariidae
Genus:	Psammorygma Jocqué[1]
Type species
Psammorygma caligatum
Species
Psammorygma aculeatum (Karsch, 1878) Psammorygma caligatum Jocqué, 1991 Psammorygma rutilans (Simon, 1887)