Synonyms and other taxonomic changes
Includes species formerly placed in Paraclunio.
Distinguished from closest relatives by trilobed fifth tarsomeres and lack of acrostichal bristles. Male and female both have short antennae with few hairs. Wing lacking vein R2+3.
Native range in North America limited to Pacific coast. The introduced T. japonicus is now found along most of the Atlantic coast.
Rocky marine shores worldwide; fast moving fresh water in Hawaii
Adults are short-lived and may not feed. Larvae eat algae.