Common blue butterfly, Polyommatus icarus, on lavender Credit Hayley Wiswell
Common blue butterfly, Polyommatus icarus, on lavender Credit Hayley Wiswell

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We have published handbooks for the identification of insects since 1949.
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Cover of Keys to adults of the water beetles of Britain and Ireland (Part 2) RES Handbook

Keys to adults of the water beetles of Britain and Ireland (Part 2)

Cover of Pollen Beetles - Coleoptera: Kateretidae and Nitidulidae: Meligethinae RES Handbook

Pollen Beetles – Coleoptera: Kateretidae and Nitidulidae: Meligethinae

Cover of True weevils (Part 1) Coleoptera: Curculionidae (subfamilies Raymondionyminae to Smicronychinae) RES Handbook

True weevils (Part 1) Coleoptera: Curculionidae (subfamilies Raymondionyminae to Smicronychinae)

Cover of Broad-nosed Weevils. Coleoptera: Curculionidae (Entiminae) RES Handbook

Broad-nosed Weevils. Coleoptera: Curculionidae (Entiminae)

Cover of True Weevils (Part II) (Coleoptera: Curculionidae, Ceutorhynchinae) RES Handbook

True Weevils (Part II) (Coleoptera: Curculionidae, Ceutorhynchinae)

Cover of True Weevils (Part III) (Coleoptera: Curculioninae, Baridinae, Orobitidinae) RES Handbook

True Weevils (Part III) (Coleoptera: Curculioninae, Baridinae, Orobitidinae)

Cover of British Scraptiidae RES Handbook

British Scraptiidae

Cover of Symphyta (except Tenthredinidae) - Hymenoptera RES Handbook

Symphyta (except Tenthredinidae) – Hymenoptera

Cover of The Vespoid Wasps (Tiphiidae, Mutillidae, Sapygidae, Scoliidae and Vespidae) of the British Isles RES Handbook

The Vespoid Wasps (Tiphiidae, Mutillidae, Sapygidae, Scoliidae and Vespidae) of the British Isles

Cover of The Banchine Wasps (Ichneumonidae: Banchinae) of the British Isles RES Handbook

The Banchine Wasps (Ichneumonidae: Banchinae) of the British Isles

Cover of Ichneumonid Wasps (Hymenoptera: Ichneumonidae): their Classification and Biology RES Handbook

Ichneumonid Wasps (Hymenoptera: Ichneumonidae): their Classification and Biology

Cover of Tachinid Flies - Diptera: Tachinidae RES Handbook

Tachinid Flies – Diptera: Tachinidae