Friday Beetle Blogging: Priacma Bleach Beetle


Priacma serrata – Bleach Beetle

Priacma serrata is an enigmatic insect from the conifer forests of western North America and is one of a handful of species belonging to the relictual beetle suborder Archostemata.  It is often thought of as a “living fossil”, bearing a strong resemblance to the earliest known beetles that pre-date even the dinosaurs.

Males are attracted to the scent of bleach, presumably because it resembles a female pheromone, and are sometimes collected off air-drying laundry.  In spite of its unique evolutionary position, the biology of Priacma has not been adequately studied.


photo details: Canon MP-E 65mm 1-5x macro lens on a Canon EOS D60
ISO 100, f/13, 1/200 sec, flash diffused through tracing paper

3 thoughts on “Friday Beetle Blogging: Priacma Bleach Beetle”

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  2. Aww. I wish I could attract Archostomata with my laundry. In Toronto that’s about as likely as… um, very unlikely.

    I never see much about these guys, thanks for the post.

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