Credit: PETER MATULAVICH/SCIENCE PHOTO LIBRARY

Caption: Wolf spider (Alopecosa sp.) encounters grasshopper (Melanoplus sp.) on log in Ohio. Spiders have poor vision and rely on movement to detect prey. The grasshopper is safe as long as it doesn't move. This one remains motionless, even when touched by spider, not hopping away until the danger has passed. Wolf spiders get their name from the way they run down their prey, like wolves. Most species don't spin webs. They are found throughout the world.

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Keywords: alopecosa, animal, arachnid, arthropod, digestive, eat, fang, feed, grasshopper, invertebrate, jaw, juice, milanoplus, ohio, predator, prey, spiders, wolf spider, zoology

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Wolf spider

K002/1410 Rights Managed

Downloadable master

Duration: 00:00:24.05

Frame size: 640x480

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 269.7M

Original

Capture format: Betacam SP

Frame size: 720x486

Codec: Photo - JPEG

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