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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| O'Connor, J.P. | 1990 | Review: 'Butterflies of the British Isles: the Lycaenidae' by M. Easterbrook | Journal | Ir. Nat. J. | 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... |
| Sterling, D.H. | 1990 | The Leckford Survey. Lepidoptera. Leckford record No.4 (rewritten December 1989) | Report | | Details... |
| Bland, K.P. | 1991 | Discovery of the larvae of Pselnophorus heterodactyla (Muller,1764) (Lepidoptera: Pterophoridae) on a new food-plant in Scotland | Journal | Ent. Gaz. | Details... |
| Bond, K.G.M. | 1991 | Review: 'Breeding butterflies and moths' by E. Friedrich | Journal | Ir. Nat. J. | Details... |
| Bond, K.G.M. | 1991 | A preliminary survey of the Lepidoptera of Pollardstown Fen, Co. Kildare, including a record of Cosmopterix lienigiella (Lienig and Zeller, 1839) (Cosmopterigidae), a species new to Ireland | Journal | Bull. Ir. biogeog. Soc. | Details... |
| Bond, K.G.M. | 1991 | Extension of the known range of Rhigognostis incarnatella (Steudel, 1873) (Lepidoptera: Yponomeutidae) records from Ireland and the Isle of Man | Journal | Ent. Gaz. | Details... |
| Bond, K.G.M. & Early, J.K. | 1991 | Thera juniperata Thunberg in Easter Ireland | Journal | Entomol. Rec. J. Var. | Details... |
| Boyd, T.D. | 1991 | Excursion: North Antrim Weekend: zoological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Emmet, A.M. | 1991 | Life history and habits of the British Lepidoptera | Chapter | | Details... |
| Emmet, A.M. | 1991 | The scientific names of the British Lepidoptera. Their history and meaning. | Book | | Details... |
| Heckford, R.J. & Langmaid, J.R. | 1991 | Lepidoptera in Ireland, 1989 | Journal | Ent. Gaz. | Details... |
| Mentzer, E. von, Moberg, A. & Fibiger, M. | 1991 | Noctua janthina (D. & S.) sensu auctum complex of three species (Lepidoptera: Noctuidae) | Journal | Nota Lepid. | Details... |
| O'Connor, J.P. | 1991 | Review: 'Local lists of Lepidoptera' by J.M. Chalmers-Hunt | Journal | Ir. Nat. J. | Details... |
| Rippey, I. | 1991 | Records of moths (Lepidoptera) in Northern Ireland, 1990 | Journal | Ir. Nat. J. | Details... |
| Rippey, I. | 1991 | 1990 Butterfly and moth report for Northern Ireland | Report | | Details... |
| Scoble, M.J. | 1991 | Classification of the Lepidoptera | Chapter | | Details... |
| Thomas & Lewington | 1991 | Large Copper | Book | | Details... |
1515 references found.