Brachinus favicollis
Erwin, 1965
Brachinus favicollis is a of bombardier beetle in the Carabidae, described by Terry Erwin in 1965. Like other members of the Brachinus, this species possesses the remarkable defensive ability to eject a hot, noxious chemical spray from the tip of its when disturbed. The species occurs in the southwestern United States and Mexico.
Pronunciation
How to pronounce Brachinus favicollis: /brəˈkaɪnəs ˌfeɪvɪˈkɒlɪs/
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Distribution
Brachinus favicollis is found in the southwestern United States (Arizona, New Mexico, Texas) and Mexico. Records indicate presence in arid and semi-arid regions of the Chihuahuan and Sonoran Desert .
Behavior
Like other bombardier beetles in the Brachinus, possess a sophisticated chemical defense system. When threatened, they discharge a hot, pulsed spray of benzoquinones from the tip of the . This reaction is catalyzed by in a specialized chamber, producing temperatures near 100°C. The spray is directed accurately toward threats and can be discharged repeatedly.