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Unlike most other arachnids, which are generally blind or have poor vision, wolf spiders have excellent eyesight. The tapetum lucidum is a retroreflective tissue found in eyes. This reflective tissue is only found in four [3] secondary eyes of the wolf spider.
Basic arrangement of spider eyes, viewed from above. Most spiders have eight eyes, which tend to be arranged into two rows of four eyes on the head region. The eyes can be categorised by their location and are divided into the anterior median eyes (AME), anterior lateral eyes (ALE), posterior median eyes (PME), and posterior lateral eyes (PLE).
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Hoggicosa natashae is one of the largest wolf spiders, with females reaching body lengths of up to 35 mm (1.4 in) and leg spans around 80 mm (3.1 in). [1] The spider has distinctive black transverse markings on a pale cream abdomen. Juveniles display a rich tan colour with faint swirling patterns, which become less prominent as they mature.
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.
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.
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