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Six-eyed spiders are spiders that, unlike most spider species, lack the principal pair of eyes, leaving them with only six eyes instead of the usual eight. [1] List
The English name six-eyed sand spiders is used for members of the genus, [2] particularly Hexophthalma hahni. All Hexophthalma species live in Namibia or South Africa . Species in the genus have dermonecrotic venom, and can potentially cause serious or even life-threatening wounds.
Sicarius spiders can grow up to 1 to 2 inches (25 to 51 mm) long, and have six eyes arranged into three groups of two (known as "dyads"). Physically, they resemble crab spiders and members of the Homalonychus genus. They lack the characteristic violin-shaped marking of the more well-known members of its family, Sicariidae the recluse spiders.
They have six eyes, eight legs and fangs. Female Guayllabamba recluse spiders have oven mitt-shaped spermathecae, an internal reproductive organ used to store sperm, the study said.
Hexophthalma hahni (synonyms Sicarius hahni and Sicarius testaceus), known along with other members of the genus as the six-eyed sand spider, is a member of the family Sicariidae, found in deserts and other sandy places in southern Africa. Due to their flattened stance and laterigrade legs, they are also sometimes known as six-eyed crab spiders.
Sicariidae is a family of six-eyed venomous spiders known for their potentially necrotic bites. The family consists of three genera and about 160 species. Well known spiders in this family include the brown recluse spider and the six-eyed sand spider.
From 8-eyed spiders to a new species resembling a “miniature dragon. ... NO. 6: ‘LARGE’ CREATURE — WITH ‘LONG’ FINGERS AND RED EYES — DISCOVERED AS NEW SPECIES.
The six-eyed sand spiders of southern Africa in the genus Hexophthalma and Sicarius from South America inject a cytotoxic venom, that contains sphingomyelinase D, [36] for which there is currently no antivenom. Fortunately, this specimen rarely interacts with humans, and is seldom known to bite.