| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Idaea angusta | (Butler, 1897) | species | Accepted | ||
| Idaea aperta | (Prout L. B., 1916) | species | Accepted | ||
| Idaea apoa | (Fletcher D. S., 1958) | species | Accepted | ||
| Idaea arcuata | (Fletcher D. S., 1958) | species | Accepted | ||
| Idaea ascepta | (Prout L. B., 1915) | species | Accepted | ||
| Idaea associata | (Warren, 1897) | species | Accepted | ||
| Idaea auriflua | (Warren, 1902) | species | Accepted | ||
| Idaea auriflua auriflua | (Warren, 1902) | subspecies | Accepted | ||
| Idaea auriflua oenozonata | (Warren, 1902) | subspecies | Accepted | ||
| Idaea banghaasi | (Prout L. B., 1934) | species | Accepted | ||
| Idaea basicostalis | (Warren, 1900) | species | Accepted | ||
| Idaea benescripta | (Prout L. B., 1922) | species | Synonym | ||
| Idaea brevissimipes | (Herbulot, 1955) | species | Accepted | ||
| Idaea buchanani | (Prout L. B., 1932) | species | Accepted | ||
| Idaea bura | (Prout L. B., 1932) | species | Accepted | ||
| Idaea burtti | (Fletcher D. S., 1958) | species | Accepted | ||
| Idaea carneilinea | (Prout L. B., 1922) | species | Accepted | ||
| Idaea circumsticta | (Warren, 1904) | species | Accepted | ||
| Idaea cochlearia | (Herbulot, 1956) | species | Accepted | ||
| Idaea consectatrix | Krüger, 2007 | species | Accepted | ||
| Idaea consericeata | (Prout L. B., 1913) | species | Accepted | ||
| Idaea contrastata | Hausmann, 2006 | species | Accepted | ||
| Idaea controversata | (Prout L. B., 1922) | species | Accepted | ||
| Idaea coronata | Hausmann, 2006 | species | Accepted | ||
| Idaea crassisquama | (Warren & Rothschild, 1905) | species | Synonym |