Psyllopsis fraxini

'Psyllopsis fraxini
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hemiptera
Family:	Psyllidae
Genus:	Psyllopsis
Species:	P. fraxini
Binomial name
	Psyllopsis fraxini; (Linnaeus), 1758

Psyllopsis fraxini is a psyllid which lives within a gall on ash (Fraxinus excelsior).

Eggs are laid in the autumn on dormant buds and the nymphs hatch in the spring and feed on the leaves. The host plant reacts by producing extra cells and the affected areas becomes swollen and rolls downwards and encloses the wax covered nymphs. Each gall may contain two or three generations and by the end of summer contain all stages of the insect.[1] The galls are pale-coloured with violet or red markings.[2]

References

Chinery, Michael (2011). Britain's Plant Galls. A photographic guide. Old Basing, Hampshire: WildGuides Ltd. p. 33. ISBN 978 190365743 0.
Redfern, Margaret; Shirley, Peter; Bloxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: FSC Publications. p. 118. ISBN 978 1 85153 284 1.

External links

Plant Parasites of Europe
Media related to Psyllopsis fraxini at Wikimedia Commons

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[1] Chinery, Michael (2011). Britain's Plant Galls. A photographic guide. Old Basing, Hampshire: WildGuides Ltd. p. 33. ISBN 978 190365743 0.

[2] Redfern, Margaret; Shirley, Peter; Bloxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: FSC Publications. p. 118. ISBN 978 1 85153 284 1.