Tan Jumping Spider (Platycryptus undatus)
The Tan Jumping Spider occurs in North and Central America. This species is found in the Eastern States and adjacent Canada to Texas and Wisconsin. Females of this species are between 10 and 13 mm in body length, and males range from 8.5 to 9.5 mm. This species of jumping spider exhibits curiosity about humans who come into its visual field. (The jumping spiders all have very good vision.) It particularly favors vertical surfaces such as fences, walls, etc. Because of its habits it is easily seen. It does not frantically flee humans and may be gently "herded" onto one's hand. Once on a human hand it may make a thorough exploration and even jump from finger to finger. These spiders are not at all inclined to bite, but even though they are rather small they are not too small to deliver a defensive bite if pinched or squeezed.
The bodies of these spiders are rather compressed in the vertical direction, which allows them to hide themselves under the loosened bark of trees and in other tight places. They have a prominent pattern on their abdomens which may make them more difficult to distinguish on mottled surfaces.
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