Keeping woodlands in Wales and Ireland healthy

Most damaging Forest insects


The following table is based on information in "Forestry Commission Handbook 1, Forest Insects: - a guide to insects feeding on trees in Britain" by D Bevan, published by HMSO 1987

It is restricted to those insects with a damage rating of 4 (XXXX) [Severe. Causing severe loss of crop increment, death of individual trees, severe degrade of produce, of young stock or of amenity value.] and 5 (XXXXX) [Very severe. Causing death of crop]

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Bibio spp. Geoffroy, 1762

St. Mark's fly (Bibio spp.  Geoffroy, 1762)
St. Mark's fly / Gwybedyn Marc bongoch

Type of trees: NURSERY
Damage rating: Damage level 4

Using nature's weapons to battle current and future threats

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