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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Ronayne, C. | 1998 | Ectemnius cephalotes (Olivier) (Hymenoptera: Sphecidae), an aculeate wasp new to Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Cotton, R.F. & Cotton, D.C.F. | 1999 | Some records of social wasps (Hymenoptera: Vespidae) from north-west Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Fursov, V.N. & Pintureau, B. | 1999 | Discovery of Trichogramma cacoeciae Marchal (Hymenoptera: Trichogrammatidae) new to England, at Chelsea Physic Garden, London | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J. , Nash, R. & Van Achterberg, C. | 1999 | A catalogue of the Irish Braconidae (Hymenoptera: Ichneumonoidea) | Journal | | Details... |
| O'Connor, J.P. | 1999 | Review: 'Provisional atlas of the aculeate Hymenoptera of Britian and Ireland' parts 1 & 2 ed. R. Edwards | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P., Nash, R. & Boucek, Z. | 2000 | A catalogue of the Irish Chalcidoidea | Journal | | Details... |
| Nelson, B., Ronayne, C., Nash, R. & O'Connor, J.P. | 2001 | Additions and changes to the Irish aculeate Hymenoptera checklist | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. & Nash, R. | 2001 | Notes on the Irish Torymidae (Hymenoptera) including eleven species new to Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 2002 | Alloxysta pedestris (Curtis) (Hymenoptera: Charipidae) new to county Dublin | Journal | Ir. Nat. J. | Details... |
| Ronayne, C. | 2002 | Ammophila sabulosa (Linnaeus, 1758) and Bombus distinguendus Morawitz, F., 1869 (Hymenoptera: Aculeata) on the Mullet Peninsula, Co. Mayo, Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P. | 2003 | A second Irish record of Oedemopsis scabricula (Gravenhorst) (Hymenoptera: Ichneumonidae) | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 2003 | Notes on Megastigmus dorsalis (Fabricius) and M. suspectus Borries (Hymenoptera: Torymidae) in Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 2003 | Second Irish records of Leptacis laodice (Walker) and L. tipulae (Kirby) (Hymenoptera: Platygastridae) | 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., Boston, M.R. & Nash, R. | 2003 | Notes on the Irish Anomaloninae (Hymenoptera: Ichneumonidae) including seven species new to Ireland | Journal | Ir. Nat. J. | Details... |
| Pintureau, B. | 2003 | Systematics and biogeography of two Trichogramma (Hymenoptera: Trichogrammatidae) species described from the Parisian Region, France | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Ronayne, C. & O'Connor, J.P. | 2003 | Distributional records of some Aculeata (Hymenoptera) collected in Ireland from 1980-2002 | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Knight, G.T. | 2004 | Kaliofenusa pusilla (Serville, 1823) (Hymenoptera: Tenthredinidae), a species of leaf-mining sawfly new to Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P. | 2004 | A checklist of the Irish Eucoilinae (Hymenoptera: Figitidae) including fourteen species new to Ireland | Journal | Ir. Nat. J. | Details... |
| O'Connor, J.P. | 2004 | Records of some rare Irish pimplines (Hymenoptera: Ichneumonidae) | Journal | Ir. Nat. J. | Details... |
599 references found.