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Belisana aliformis (at Wikispecies) [6] Belisana huberi (at Wikispecies) [7] Belisana lamellaris (at Wikispecies) [8] Belisana zhangi (at Wikispecies) [9] Khorata; Khorata diaoluoshanensis (at Wikispecies) [10] Caponioidea; Caponiidae—family with species with 8, 6, 4 and 2 eyes and some with a variable number of eyes; Tetrablemmidae
[2] [5] The secondary eyes normally have a light-reflecting layer, the tapetum, that makes the eyes appear pale. [6] The tapetum differs considerably between spider families but can be separated into three main types: PT (primitive type), CT (canoe type), and GT (grate type). Some spiders, such as jumping spiders, have no tapetum in their ...
Hexophthalma is a genus of spiders in the family Sicariidae. [1] Although the genus was originally erected in 1878 (then with the name Hexomma), it was merged into the genus Sicarius in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in Sicarius were distinct.
Guayllabamba recluse spiders are considered “medium-sized,” reaching about 0.3 inches in length, researchers said. They have six eyes, eight legs and fangs.
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.
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.
Those species which have retained their eyes, have 6 eyes set in a distinctive pattern, with posterior pair set back from the others. If a spider from this family looses a leg , it usually separates between the patella and tibia rather than at the coxa/trochanter joint.
Eyes: The basic number of eyes is eight, typically arranged in two rows (e.g. as in Gnaphosidae); the front row are the anterior eyes, the row behind the posterior eyes; the four eyes to the edges are the lateral eyes, the four eyes in the centre the median eyes; the anterior median eyes are called the main eyes or direct eyes, while the other ...