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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Connor, J.P. and O'Grady, M.F. | 1990 | Observations on the distribution of Sialis nigripes Pictet (Megaloptera) in Ireland | Journal | Ent. Gaz. | Details... |
| O'Connor, J.P., Ashe, P., O'Neill, L., Bond, K.G.M. & Murray, D.A. | 1990 | Records of some insect pests which recently caused public concern in Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| O'Connor, J.P., Good, J.A. & Bond, K.G.M. | 1990 | Leptocerus tineiformis Curtis: a caddisfly new to Ireland from Pollardstown Fen, Co. Kildare | Journal | Entomol. Rec. J. Var. | Details... |
| Rippey, I. | 1990 | Excursion: South Donegal: Zoological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Rippey, I. | 1990 | Excursion: Peatlands Park, Co. Armagh | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Rippey, I. | 1990 | Excursion: Crawfordsburn Country Park and Clandeboye Estate | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Shaw, M.R. | 1990 | More Trigonalis hahnii Spinola (Hymenoptera: Trigonalyidae) in Norfolk | Journal | Ent. Monthly Mag. | Details... |
| Sleeman, D.P. | 1990 | Bat flea Ischnopsyllus elongatus (Curtis) (Siphonaptera) new to Ireland | Journal | Ir. Nat. J. | Details... |
| Sleeman, D.P. | 1990 | Review: 'Provisional atlas of the ticks (Ixodoidea) of the British Isles' by K.P. Martyn | Journal | Ir. Nat. J. | Details... |
| Speight, M.C.D. | 1990 | Platycheirus occultus and P. ramsarensis in Ireland and correct citation of the original descriptions of these species and the original description of P. europaeus (Diptera: Syrphidae) | Journal | Ir. Nat. J. | Details... |
| Speight, M.C.D. | 1990 | Review: 'Identification chart of British and Irish dragonflies' | Journal | Ir. Nat. J. | Details... |
| Speight, M.C.D. | 1990 | Pyropterus nigroruber (Degeer) in Ireland (Coleoptera: Lycidae), with a key to distinguish this beetle from related European species | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Speight, M.C.D. | 1990 | Hippodamia 13-punctata (Coleoptera: Coccinellidae) and other insects from All Saints Bog, Co. Offaly, Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Speight, M.C.D. & Goeldlin, P. de Tiefenau | 1990 | Keys to distinguish Platycheirus angustipes, P. europaeus, P. occultus and P. ramsarensis (Diptera: Syrphidae) from other clypeatus group species known in Europe | Journal | Dipterists Dig. | Details... |
| Speight, M.C.D., Blackith, R.E. & Blackith, R.M. | 1990 | Antichaeta brevipennis, Leocophenga maulata, Plyorivora picta and Tephrochlamys tarsalis (Diptera): insects new to Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Sterling, D.H. | 1990 | The Leckford Survey. Lepidoptera. Leckford record No.4 (rewritten December 1989) | Report | | Details... |
| Vockeroth, J.R. | 1990 | Revision of the Nearctic species of Platycheirus (Diptera: Syrphidae) | Journal | Can. Ent. | Details... |
| Wallace, I.D., Wallace, B. & Philipson, G.N. | 1990 | A key to the case-bearing caddis larvae of the British Isles | Book | | Details... |
| Wright, A. | 1990 | British sawflies (Hymenoptera: Symphyta). A key to the adults of genera occuring in Britain | Journal | Field Stud. | Details... |
| Allen, M.D.B. | 1991 | Excursion: Milford Nature Reserve and Thompson's Quarry, Armagh | Journal | Proc. Belf. Nat. Fld. Club | Details... |
4097 references found.