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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Copeman, J.L. | 1899 | Colias edusa in Co. Cork | Journal | Ir. Nat. | Details... |
| Cuthbert, H.K.G. | 1899 | Macroglossa stellatarum in Co. Dublin | Journal | Ir. Nat. | Details... |
| Flemyng, W.W. | 1899 | Colias edusa in Co. Waterford | Journal | Ir. Nat. | Details... |
| Gleeson, M. | 1899 | Phenological notes from Co. Tipperary | Journal | Ir. Nat. | Details... |
| Gleeson, M. | 1899 | Notes on Lepidoptera | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Entomological notes from Poyntzpass, etc. | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Macroglossa stellatarum and M. bombyliformis at Poyntzpass | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1899 | Entomological notes from Ulster | Journal | Ir. Nat. | Details... |
| Kane, W.F. de Vismes | 1899 | Noteworthy Lepidoptera | Journal | Ir. Nat. | Details... |
| Limerick Field Club | 1899 | Limerick Field Club | Journal | Ir. Nat. | Details... |
| Moffat, C.B. | 1899 | Macroglossa stellatarum in 1899 | Journal | Ir. Nat. | Details... |
| Reynell, H.E. | 1899 | Colias edusa in Co. Westmeath | Journal | Ir. Nat. | Details... |
| Scharff, R.F.& Carpenter, G.H. | 1899 | Some animals from the Macgillycuddy's Reeks | Journal | Ir. Nat. | Details... |
| Thompson, K. | 1899 | Colias edusa in Co. Donegal | Journal | Ir. Nat. | Details... |
| Wolfe, J.J. | 1899 | Migratory butterflies in south-west Cork | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Abundance of Colias edusa in Connemara | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Zelleria phillyrella, Milliere, introduced in Connemara | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Lepidoptera of Co. Cork | Journal | Ir. Nat. | Details... |
| Anon. | 1900 | Belfast & Dublin Naturalists' Field Clubs | Journal | Ir. Nat. | Details... |
| Barrington, R.M. | 1900 | Acherontia atropos off the Wexford coast | Journal | Ir. Nat. | Details... |
1515 references found.