Golden Flower Longhorn
Lepturobosca chrysocoma
(Cosmosalia chrysocoma)
Observed in Reynold's Canyon, Sierra Ancha, Gila Co., Arizona, USA. 4 June 2010.
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Many, many species of Cerambycidae are found in Arizona. A large sub-group are known as flower longhorns, Lepturinae. The best place to find them is on flowers where they feed on pollen or the petals. Most are about 1 to 2 cm long with hardened, elongated elytra (first pair of wings). The head and pronotum are distinctly narrowed anteriorly. This species has very distinctive golden pubescence covering the elytra and thorax. The immature stage is a wood-boring grub to be found inside the stems of various plants.