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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Newman, L.W. | 1919 | Melitaea aurinia | Journal | Proc. Trans. S. Lond. Entomol. Nat. Hist. Soc. | Details... |
| Northridge, H.J. | 1983 | Impartial Reporter 1.12.1983. Overwintering butterflies | Newspaper article | | Details... |
| Northridge, H.J. | 1983 | Impartial Reporter 8.12.1983. Refinding of the purple hairstreak | Newspaper article | | Details... |
| O'Connor, J.P. | 1983 | Review: 'Leaves from a moth-hunter's notebooks' by P.B.M. Allan | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 1985 | Review: 'The moths and butterflies of Great Britain and Ireland vol. 10' eds. J. Heath & A.M. Emmet | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 1988 | Review: 'British pyralid moths' by B. Goater | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 1990 | Review: 'Butterflies of the British Isles: the Lycaenidae' by M. Easterbrook | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 1991 | Review: 'Local lists of Lepidoptera' by J.M. Chalmers-Hunt | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 1998 | A 1997 Irish record of the oleander hawk-moth (Daphnis nerii (L.)) (Lepidoptera: Sphingidae) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 2003 | Review: 'The moths and butterflies of Great Britain and Ireland. Volume 4 (Parts 1 and 2): Oecophoridae to Scythrididae edited by A. M. Emmet & J.R. Langmaid | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Nash, R. | 1982 | Further records of insects (Dictyoptera, Lepidoptera, Coleoptera, Diptera) imported into Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Nash, R. | 1984 | Insects imported into Ireland 6. Records of Orthoptera, Dermaptera, Lepidoptera and Coleoptera | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Nash, R. | 1986 | Insects imported into Ireland 8. Records of Hemiptera, Coleoptera, Diptera and Lepidoptera | Journal | Ir. Nat. J. | Details... |
| O'Farrell, A.F. | 1943 | The striped hawk-moth, Celerio lineata livornica Esp., in County Down | Journal | Ir. Nat. J. | Details... |
| O'Farrell, A.F. | 1947 | Lepidoptera in Northern Ireland, 1943-5 | Journal | Ir. Nat. J. | Details... |
| O'Flynn, H. | 1931 | Further Irish records for convolvulus hawk moth, 1930 | Journal | Ir. Nat. J. | Details... |
| O'Grady, M. | 1931 | Further Irish records for convolvulus hawk moth, 1930 | Journal | Ir. Nat. J. | Details... |
| O'Mahony, E. | 1931 | Further Irish records for convolvulus hawk moth, 1930 | Journal | Ir. Nat. J. | Details... |
| O'Mahony, E. | 1934 | An Irish record for goldtail moth, Porthesia similis Fues. | Journal | Ir. Nat. J. | Details... |
| O'Meara, M. | 1974 | Passage of insects near Dunmore East, Co. Waterford | Journal | Ir. Nat. J. | Details... |
1515 references found.