| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Cosmopterix umbriel | Koster, 2016 | species | Accepted | ||
| Cosmopterix vandenbergi | Koster, 2016 | species | Accepted | ||
| Cosmopterix varii | Koster, 2016 | species | Accepted | ||
| Cosmopterix venefica | Meyrick, 1915 | species | Synonym | ||
| Cosmopterix viridilineata | Koster, 2016 | species | Accepted | ||
| Cosmopterix yangambensis | Koster, 2016 | species | Accepted | ||
| Cosmorrhyncha acrocosma | (Meyrick, 1908) | species | Accepted | ||
| Cosmorrhyncha microcosma | Aarvik, 2004 | species | Accepted | ||
| Cosmorrhyncha obuduana | Razowski & Wojtusiak, 2012 | species | Accepted | ||
| 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 |