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Hogna wolf spider (family Lycosidae) showing the enlarged posterior median eyes typical of the family. The eyes of spiders vary significantly in their structure, arrangement, and function. They usually have eight, each being a simple eye with a single lens rather than multiple units as in the compound eyes of insects. The specific arrangement ...
Like many spiders, this species shows sexual dimorphism. [3] The female is larger than the male. The female is about 60 millimeters (2.4 in) long including the legs; her body length is 15–20 mm (0.59–0.79 in) and the male's body is 9–13 mm (0.35–0.51 in) long. [4] The juvenile spiders look similar to adults but are smaller. The juvenile ...
The many genera of wolf spiders range in body size (legs not included) from less than 10 to 35 mm (0.4 to 1.38 in). [1] [2] They have eight eyes arranged in three rows. The bottom row consists of four small eyes, the middle row has two very large eyes (which distinguishes them from the Pisauridae), and the top row has two medium-sized eyes ...
Huishui dwarf spiders are considered “small,” reaching less than 0.1 inches in length, the study said. They have eight eyes, eight brownish-yellow legs and a marbled black and white body ...
The time-counted tarantula can reach about 1.2 inches in length, researchers said. It has eight eyes, eight legs and is covered with “bright golden,” “long” hairs. Photos show the new species.
Jumping spiders have four pairs of eyes; three secondary pairs that are fixed and a principal pair that is movable. The posterior median eyes are vestigial in many species, but in some primitive subfamilies, they are comparable in size with the other secondary eyes and help to detect motion. [10]
In the mountains of Ecuador lurked an eight-eyed creature with a “bad temperament.” When scientists encountered the hairy animal, they discovered its bristly personality — and a new species.
The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two tagmata (sections or segments), eight jointed legs, no wings or antennae, the presence of chelicerae and pedipalps, simple eyes, and an exoskeleton, which is periodically shed.