The noctuid (owlet) moth genus Cydosia is the only member of the tribe Cydosiini in the subfamily Acontiinae. The genus was erected by James Duncan with John O. Westwood in 1841. The few species occur from Argentina along the Andes to the Caribbean and Central America, reaching into the southern United States. The unusual format for the authority citation is explained at Butterflies and Moths of the World as "The difficulty can best be overcome by attributing Westwood with anonymous junior authorship."
![(Cydosia aurivitta - 09BBLEP-03182) @14 [ ] CreativeCommons - Attribution (2009) Unspecified Centre for Biodiversity Genomics](https://892685.ixgpkh.asia/pics/_w70/BBLSY/IMG_1482%2B1255611810.JPG "(Cydosia aurivitta - 09BBLEP-03182) {} [ ] CreativeCommons - Attribution (2009)")
![(Cydosia curvinella - 05-SRNP-23375) @16 [ ] CreativeCommons - Attribution Non-Commercial Share-Alike (2006) Unspecified Guanacaste Dry Forest Conservation Fund](https://892685.ixgpkh.asia/pics/_w70/MHAUF/05-SRNP-23375-DHJ328338%2B1145314124.jpg "(Cydosia curvinella - 05-SRNP-23375) {} [ ] CreativeCommons - Attribution Non-Commercial Share-Alike (2006)")
![(Cydosia majuscula - RBMIS-0094) @15 [ ] CreativeCommons - Attribution (2009) Unspecified Centre for Biodiversity Genomics](https://892685.ixgpkh.asia/pics/_w70/LMEM/IMG_1284%2B1241642422.JPG "(Cydosia majuscula - RBMIS-0094) {} [ ] CreativeCommons - Attribution (2009)")
![(Cydosia nobilitella - CNCLEP00116054) @15 [ ] CreativeCommons - Attribution (2014) CBG Photography Group Centre for Biodiversity Genomics](https://892685.ixgpkh.asia/pics/_w70/CNCLB/CNCLEP00116054%2B1398344624.JPG "(Cydosia nobilitella - CNCLEP00116054) {} [ ] CreativeCommons - Attribution (2014)")
![(Cydosia rimata - MACN-Bar-Lep-ct 04192) @13 [ ] Copyright (2013) MACN Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"](https://892685.ixgpkh.asia/pics/_w70/ARMOT/MACN-Bar-Lep-ct_04192%2B1371509568.JPG "(Cydosia rimata - MACN-Bar-Lep-ct 04192) {} [ ] Copyright (2013)")
