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These are medium to large wolf spiders with strong legs and a sharp vision. Their body size ranges from less than 10 mm to about 35 mm. Wolf spiders have eight eyes present in 3 rows, with 4 small eyes in the bottom row, 2 large eyes in the middle, and 2 medium-sized eyes at the top.
The grate-type tapetum is the most efficient; the long vitreous body and spherical lens combine to produce a sharp, in focus image. It forms rows of crystals which lie beneath the visual cells, and the nerves exit through the gaps in the 'grate'. This type is found primarily in hunting spiders such as wolf spiders and fishing spiders. [2] [7]
Wolf spiders resemble nursery web spiders (family Pisauridae), but wolf spiders carry their egg sacs by attaching them to their spinnerets, while the Pisauridae carry their egg sacs with their chelicerae and pedipalps. Two of the wolf spider's eight eyes are large and prominent; this distinguishes them from nursery web spiders, whose eyes are ...
One group of spiders that is fairly active this time of year that breaks this stereotype are the wolf spiders. More Nature News: Owls usher in the Halloween spirit with 'who-cooks-for-you' call
Two Schizocosa ocreata in Prince William County, Virginia, US. The S. ocreata has dark furry legs that distinguish this spider from other spiders in the Schizocosa genus. In addition, the tufts of bristle pair on the male is a secondary sexual characteristic that is the only physical feature that distinguishes this spider from its sibling species.
Hogna is a genus of wolf spiders with more than 200 described species. It is found on all continents except Antarctica.. The typical eye pattern of Hogna species: the width of the bottom row of eyes is less than the width of the two largest eyes in the middle row.
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