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Eris militaris
Males have a lighter abdomen and a darker cephalothorax, each with white bands along the sides. These white bands are absent on the female's cephalothorax but present on the abdomen. On the males, the fang-like features, known as chelicerae, are long and located at the front of their cephalothorax.
Spotted on low vegetation at the Flaming Geyser State Park in Washington State.
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