It was originally described from Myanmar (type locality) and other locations cited in taxonomic articles include southern China, Malta, southern Italy, Tunisia, United Arab Emirates, Oman, India, Pakistan, Bangladesh and Mexico.

[1][2] In southern Italy it was first reported in 2014 and 2015 and is regarded there as an invasive pest of fig and mango trees.

[4] For a complete list of distribution records see the "Bark and Ambrosia Beetles of North and Central America".

However, that species does not attack fig trees, is not found in southern Europe and has different morphological features.

[2] The females of C. dilutus lay eggs under the bark of fig and mango trees, where the larvae develop with the help of symbiotic fungi.