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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Meara, M. | 1975 | Occurrence of convolvulus hawk moth (Herse convolvuli L.) in Co. Waterford in 1974 | Journal | Ir. Nat. J. | Details... |
| O'Rourke, F.J. | 1942 | Irish records for death's-head hawk-moth, 1940 | Journal | Ir. Nat. J. | Details... |
| Oldham, C. | 1933 | Painted lady and red admiral on the Mullet Peninsula | Journal | Ir. Nat. J. | Details... |
| Orr, H.L. | 1903 | Convolvulus hawk-moth near Belfast | Journal | Ir. Nat. | Details... |
| Pack-Beresford, D.R. | 1903 | The pine-bud moth | Journal | Ir. Nat. | Details... |
| Pack-Beresford, D.R. | 1931 | Further Irish records for convolvulus hawk moth, 1930 | Journal | Ir. Nat. J. | Details... |
| Palmer, J.A.J. | 1928 | Clouded yellow butterfly in County Dublin | Journal | Ir. Nat. J. | Details... |
| Palmer, J.A.J. | 1933 | Frequence of the clouded yellow | Journal | Ir. Nat. J. | Details... |
| Palmer, J.A.J. | 1937 | Butterflies on moutain top | Journal | Ir. Nat. J. | Details... |
| Parsons, C.Q. | 1961 | Irish county records (Lepidoptera) | Journal | Ir. Nat. J. | Details... |
| Parsons, C.Q. | 1963 | Irish county records - Lepidoptera | Journal | Ir. Nat. J. | Details... |
| Parsons, M.S. | 1993 | A review of the scarce and threatened pyralid moths of Great Britain | Book | | Details... |
| Parsons, M.S. | 1995 | A review of the scarce and threatened ethmiine, stathmopodine and gelechiid moths of Great Britain | Book | | Details... |
| Parsons, M.S. & Sterling, P. | 1996 | A review of the scarce and threatened Incurvariidae, Heliozellidae, Psychidae, Tineidae and Ochsenheimeriidae moths of Great Britain | Book | | Details... |
| Partridge, C.E. | 1893 | Lepidoptera of Enniskillen | Journal | Ent. Monthly Mag. | Details... |
| Partridge, C.E. | 1894 | Lepidoptera of the districts around Lough Erne | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Partridge, C.E. | 1895 | Further captures of Lepidoptera at Enniskillen, Ireland | Journal | Ent. Monthly Mag. | Details... |
| Partridge, C.E. | 1895 | Supplementary notes on the Lepidoptera of Enniskillen | Journal | Ent. Monthly Mag. | Details... |
| Partridge, C.E. | 1897 | The partial double-broodedness of Plusia festucae | Journal | Entomol. Rec. J. Var. | Details... |
| Paterson, T.G.F. | 1936 | Convolvulus hawk-moth in Co. Armagh | Journal | Ir. Nat. J. | Details... |
1515 references found.