Adult buprestid beetles often have some rather extensive areas of metallic coloration. They also have a rather characteristic body shape - blunt-headed with a long, narrow, parallel-sided body tapering to a point. Smaller buprestids can sometimes be found covered with pollen in Prickly Pear cactus flowers. The juveniles or larvae bore into various woods and are often known as flat-headed borers.
Thrincopyge ambiens
2001 March 06 near the mouth of McKittrick Canyon
Larvae feed in the dead flower stalks of Nolina and Dasylirion sp. (Nelson 1980)
Adults are known to feed on leaves of Nolina and Dasylirion sp. (Nelson 1980)
pollen-covered buprestid in prickly pear cactus flower
2001 June 02 along the Devil's Hall Trail
References
Nelson, G.H. 1980
   A Review of the Genus Thrincopyge LeConte (Coleoptera: Buprestidae)
   Pan-Pacific Entomologist 56(4): 297-310
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