Synaphaeta is a monotypic beetle genus in the family Cerambycidae first described by Thomson in 1864.[1] Its only species, Synaphaeta guexi (Also called the spotted tree borer), occurs in the Pacific states of North America, from British Columbia down to California.[2] It has been reared from a variety of hardwood trees, including Pacific willow (Salix lasiandra), white alder (Alnus rhombifolia), coffeeberry (Frangula californica), English walnut (Juglans regia), and cherry (Prunus sp.).[3] It was described by John Lawrence LeConte in 1852 based on a specimen from Benicia, California.[4]