Chemsakia semicostata

{{short description|Species of beetle}}

{{Speciesbox

| image =

| genus = Chemsakia

| species = semicostata

| authority = (Bates, 1872)

}}

Chemsakia semicostata is a species of beetle in the family Cerambycidae.Bezark, Larry G. [http://plant.cdfa.ca.gov/byciddb/bycidview.asp A Photographic Catalog of the Cerambycidae of the World] {{Webarchive|url=https://web.archive.org/web/20130827211041/http://plant.cdfa.ca.gov/byciddb/bycidview.asp# |date=2013-08-27 }}. Retrieved on 22 June 2012. It was described by Henry Walter Bates in 1872.