Discover Life in America

Palps modified to large pincers

With the abdomen long and tipped by a stinger; pectines present ventrally

SCORPIONES (Scorpions)

With abdomen short and without stinger; without pectines

PSEUDOSCORPIONES (Pseudoscorpions)

Palps leg-like or very small and not formed into pincers

Spiders, Harvestmen, Mites, and Ticks

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