''Thricolema'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

leaf beetle The beetle family Chrysomelidae, commonly known as leaf beetles, includes over 37,000 (and probably at least 50,000) species in more than 2,500 genera, making it one of the largest and most commonly encountered of all beetle families. Numerous s ...

s in the subfamily

Synetinae The Synetinae are a small subfamily within the leaf beetle family (Chrysomelidae). They are found entirely within the Holarctic, mainly in North America but also appearing in parts of Europe Europe is a continent located entirely in the N ...

. It contains only one species, ''Thricolema anomala'', known from

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

and

Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

in the United States. ''Thricolema'' resembles ''

Syneta ''Syneta'' is a genus of leaf beetles in the subfamily Synetinae. There are about 11 described species in ''Syneta''. The genus is entirely holarctic in distribution, with species appearing in North America, Siberia, East Asia and Northern Europ ...

'', except that the adult females of ''Thricolema'' have simple tarsal claws, whereas adults of both sexes of ''Syneta'' have bifid claws. The body of an adult is elongated and

fibrous Fiber (spelled fibre in British English; from ) is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often inco ...

. Adults are associated with ''

Calocedrus decurrens ''Calocedrus decurrens'', with the common names incense cedar and California incense cedar (syn. ''Libocedrus decurrens'' Torr.), is a species of coniferous tree native to western North America. It is the most widely known species in the genus, ...

''.

References

External links

* Synetinae Chrysomelidae genera Monotypic beetle genera Beetles of the United States Taxa named by George Robert Crotch {{chrysomelidae-stub