| This brilliant,
metallic green beetle is sometimes found in large numbers during the Arkansas
spring, being attracted to lights at night. It may cause alarm because
of its large size (it reaches 1 - 1½" in length) and the odor it
emits to ward off predators and intruding humans. The wing covers
have many fine longitudinal furrows that are beset with tiny punctures,
and each cover has a reddish-copper border. The head, pronotum, and
legs are deep metallic blue or purple, and the pronotum has a gold margin.
Imprudent handlers could receive an unwelcome nip from the hefty mandibles.
However, Calosoma scrutator is a highly beneficial species that
climbs trees in search of caterpillar prey. Although the beetles
are active from May to November, they seem to be especially numerous in
May after trees are fully leaved out and while the spring flush of caterpillars
is ravaging the foliage. Adults winter over, and they live up to
3 years. Eggs are placed one at a time in soil. Larvae also
hunt caterpillars and climb trees and shrubs in search of prey. They
pupate in earthen cells. |
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