The valley carpenter bee, X. varipuncla Patton, is found primarily in the valleys and lower foothills of California and Arizona. This species is about 3/4" (18-20 mm) long. The female is shiny black with brilliant metallic purple, brassy, or bronzy reflections, in stark contrast to the golden brown or buff color of the male.
Carpenter
bees have become noticeably more numerous in recent years, probably due
to the increased nesting site potential afforded in more prevalent piles
of fireplace wood. Females, are most commonly seen and can be startling
to unsuspecting observers. They're bluish-black, somewhat larger, more
flattened and less fuzzy than bumble bees. Although they're not normally
aggressive they will sting if annoyed.
Males are seclusive, blond to tan in color, somewhat smaller and harmless. Nesting females burrow finger-size holes into dead tree limbs and trunks, fireplace wood, poles or unfinished beams or rafters of buildings to nest. However, they're repelled by paint and most other wood finishes
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Carpenter
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