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[2] 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]
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.
However, wolf spiders usually only bite when they feel threatened or mishandled. [13] Wolf spiders have been found to be a vital source of natural pest control for many people's personal gardens or even homes, since the wolf spider preys on perceived pests such as crickets, ants, cockroaches, and in some cases lizards and frogs. [14]
Wolf spider. What they look like: With over 200 species of wolf spiders crawling around, it’s no wonder that they range in size and appearance. “The largest species can be up to an inch and a ...
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. [7] Brush-legged wolf spider
Like wolves (and unlike the typical web-weaving spider), wolf spiders usually run down their prey. Unlike wolves, they hunt alone. Instead of making webs, they build burrows in the soil, or ...
Pardosa astrigera is a small wolf spider with the body length ranging between 6–10 mm (0.24–0.39 in) for females and 5–9 mm (0.20–0.35 in) for males. [8] [9] [10] The cephalothorax varies from blackish-brown to yellowish-brown with a distinct median dorsal stripe running the length of the carapace.
Schizocosa mccooki is a large wolf spider with the body length ranging between 9.1–15.5 mm (0.36–0.61 in) for males and 9.6–22.7 mm (0.38–0.89 in) for females. [6] The carapace ranges in color from gray to light brown with a pale median band, black lateral bands, and pale submarginal bands that sometimes extend to the margins.