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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Connor, J.P. & Ashe, P. | 1999 | A record of Drosophila funebris (Fabr.) (Diptera: Drosophilidae) from Carlow | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Ashe, P. | 2003 | Agromyza pseudoreptans Nowakowski (Diptera: Agromyzidae) discovered in a Co. Dublin garden | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Ashe, P. | 2004 | New records of Irish Culicidae and Dixidae (Diptera) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Ashe, P. | 2006 | A second Irish record of Metriocnemus cavicola Kieffer (Diptera: Chironomidae) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Chandler, P.J. | 2000 | Distributional records of Irish Diptera | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P. & Chandler, P.J. | 2006 | Records of Irish Agromyzidae (Diptera) including two species new to Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Chandler, P.J. | 2006 | Some records of Irish Lonchaeidae (Diptera) with corrections to the Irish list of this family | 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. | 1986 | Insects imported into Ireland 8. Records of Hemiptera, Coleoptera, Diptera and Lepidoptera | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & O'Connor, M.A. | 1987 | A third Irish record of Paykullia maculata (Fallen) (Diptera: Rhinophoridae) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Ronayne, C. | 2003 | Oebalia minuta (Diptera) new to Ireland and second Irish records of Pteromalus apum and Torymus armatus (Hymenoptera) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., O'Connor, M.A. & Ashe, P. | 1992 | Records of Thaumalea verralli Edwards (Diptera) from Co. Waterford | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., O'Connor, M.A. & Ashe, P. | 1998 | Drosophila repleta Wollaston (Diptera: Drosophilidae) in south-east Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., O'Connor, M.A., Wallace, I.D. & Wallace, B. | 1986 | Thaumastoptera calceata Mik. (Diptera: Limoniidae) new to Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., Wistow, S., Ashe, P. & O'Connor, M.A. | 1998 | A review of the Irish gall-inducing Cecidomyiidae (Diptera) and their inquilines | Journal | Ir. Nat. J. | Details... |
| O'Gorman, F. | 1965 | Argas vespertilionis (Latreille), a tick previously unrecorded in Ireland | Journal | Ir. Nat. J. | Details... |
| O'Mahony, E. | 1925 | The fauna of a tank | Journal | Ir. Nat. J. | Details... |
| O'Mahony, E. | 1931 | A dipterous parasite of woodlice | Journal | Ent. Monthly Mag. | Details... |
| O'Mahony, E. | 1936 | Stratiomys furcata Fab. in North Dublin | Journal | Ir. Nat. J. | Details... |
| O'Rourke, F.J. | 1945 | Method used by wasps of the genus Vespa in killing prey | Journal | Ir. Nat. J. | Details... |
593 references found.