| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Cosmorrhyncha ocellata | (Mabille, 1900) | species | Accepted | ||
| Cossus balcanicus | Lederer, 1863 | species | Synonym | ||
| Cossus cossus | (Linnaeus, 1758) | species | Accepted | ||
| Cossus ligniperda | Fabricius, 1794 | species | Synonym | ||
| Cossus stygianus | Stichel, 1908 | species | Synonym | ||
| Cossus unguiculatus | Fabricius, 1794 | species | Synonym | ||
| Cosuma flavimacula | West, 1940 | species | Accepted | ||
| Cosuma marginata | Holland, 1892 | species | Accepted | ||
| Cosuma pobana | Hering, 1928 | species | Misapplied | ||
| Cosuma polana | Druce, 1888 | species | Accepted | ||
| Cosuma radiata | Carcasson, 1965 | species | Accepted | ||
| Cosuma rugosa | Walker, 1855 | species | Accepted | ||
| Covelliana aarviki | Eitschberger, 2016 | species | Accepted | ||
| Covelliana adriani | Eitschberger, 2016 | species | Accepted | ||
| Covelliana afarorum | (Rougeot, 1975) | species | Accepted | ||
| Covelliana alessandroi | Eitschberger, 2016 | species | Accepted | ||
| Covelliana anna | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana berioi | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana bertii | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana bouyeri | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana cadioui | (Haxaire & Camiade, 2008) | species | Accepted | ||
| Covelliana carmen | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana dargei | Eitschberger, 2016 | species | Accepted | ||
| Covelliana defreinai | Eitschberger & Melichar, 2016 | species | Accepted | ||
| Covelliana felix | Eitschberger, 2016 | species | Accepted |