| Idaea heres (Prout L. B., 1932) |
|
Prout L. B. 1932c. New genera and species of Sterrhinae (Fam. Geometridae). page: 248 |
| Idaea laticlavia (Prout L. B., 1922) |
|
Prout L. B. & Prout A. E. 1922. New South African Heterocera. page: 158 |
| Idaea lilliputaria (Warren, 1902) |
|
Staude H. S., Picker M. & Griffiths Ch. 2023. Southern African moths & their caterpillars. page: 148 (map) |
| Idaea ossicolor (Janse, 1935) |
|
Janse A. J. T. 1933–1935. The Moths of South Africa. Volume II. Geometridae (concluded). page: 246 |
| Idaea pericalles (Prout L. B., 1913) |
|
Prout L. B. 1913b. New South African Geometridae. page: 202 |
| Idaea rufifascia (Prout L. B., 1916) |
|
page: TMSA |
| Idaea sinuilinea (Prout L.B., 1913) |
|
Janse A. J. T. 1933–1935. The Moths of South Africa. Volume II. Geometridae (concluded). page: 229 |
| Idaea squamulata (Warren, 1900) |
|
page: TMSA |
| Idaea sublimbaria (Warren, 1900) |
|
Pinhey E. C. G. 1975. Moths of southern Africa. Descriptions and colour illustrations of 1183 species. page: 101 |
| Idaea subterfundata (Prout L. B., 1922) |
|
Prout L. B. & Prout A. E. 1922. New South African Heterocera. page: 161 |
| Idaea trissosemia (Prout L. B., 1922) |
|
Prout L. B. & Prout A. E. 1922. New South African Heterocera. page: 161 |
| Idaea umbricosta (Prout L.B., 1913) |
|
Janse A. J. T. 1933–1935. The Moths of South Africa. Volume II. Geometridae (concluded). page: 241 |
| Idaea umbricosta umbricosta (Prout L.B., 1913) |
|
Janse A. J. T. 1933–1935. The Moths of South Africa. Volume II. Geometridae (concluded). page: 241 |
| Idiochlora approximans (Warren, 1897) |
|
Janse A. J. T. 1933–1935. The Moths of South Africa. Volume II. Geometridae (concluded). page: 303 |
| Idiodes flexilinea (Warren, 1898) |
|
Fletcher D. S. 1958b. Ruwenzori Expedition 1952. – Geometridae. page: 129 |
| Idiotephra hondensis Krüger, 2000 |
|
Krüger M. 2000d. First record of the tribe Eutoeini Holloway, 1994 (Lepidoptera: Geometridae: Ennominae), from southern Africa, with descriptions of two new species. page: 107 |
| Ilemodes astriga Hampson, 1916 |
|
Pinhey E. C. G. 1975. Moths of southern Africa. Descriptions and colour illustrations of 1183 species. page: 166 |
| Ilemodes heterogyna Hampson, 1900 |
|
Pinhey E. C. G. 1975. Moths of southern Africa. Descriptions and colour illustrations of 1183 species. page: 166 |
| Ilemodes isogyna Romieux, 1935 |
|
Dubatolov V. V. 2011. Arctiinae from African expeditions of V. Kovtunovich & P. Ustjuzhanin in 2009–2011, with description of new taxa and taxonomic notes. page: 129 |
| Illa perquisita (Prout L. B., 1922) |
|
Prout L. B. 1922a. New and little-known Geometridae. page: 356 |
| Imbrasia ertli Rebel, 1904 |
|
Janse A. J. T. 1918a. Some apparently undescribed Heterocera and five species hitherto unrecorded from South Africa. page: 82 |
| Imbrasia obscura (Butler, 1878) |
|
Stoneham H. F. 1962. A provisional check list of the African Saturnidae [sic] in the museum collections. Parts 1–5. page: [14] (as convexa) |
| Indarbela tegula (Distant, 1897) |
|
Pinhey E. C. G. 1975. Moths of southern Africa. Descriptions and colour illustrations of 1183 species. page: 35 |
| Induba nigrescens Kiriakoff, 1975 |
|
Kiriakoff S. G. 1975b. New African Notodontidae XII (Lepidoptera Notodontoidea). page: 8 |
| Interdelta intermedia (Janse, 1937) |
|
page: R. Butler |