2023

TQ7161 : Biorhiza pallida - Oak apple gall

taken 2 years ago, near to Snodland, Kent, England

Biorhiza pallida - Oak apple gall
Biorhiza pallida - Oak apple gall
Oak apple galls are found between May and June on oak trees, where a female gall-causer wasp (Biorhiza pallida) has laid her eggs in a leaf bud, causing it to form an oak apple gall. Inside the gall, there are a number of chambers, each housing a larva that develops into a gall wasp which emerges in June or July.

Seen here on a pedunculate oak tree (Quercus robur) in the country park at the former gravel pits known as Leybourne Lakes, near Snodland in Kent. Ref:P5020098ag.
Cecidology - the study of Galls

Cecidology is the name for the study of the world of galls.
A gall or a cecidium (plural: cecidia) is an abnormal growth in a plant caused by specific gall-causing insects, mites, or fungi.
Examples include the Oak Apple, that looks like a small round fruit but is actually a plant deformity caused by a wasp.

for info see: The British Plant Gall Society: LinkExternal link


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TQ7161, 91 images   (more nearby 🔍)
Photographer
Phil Brandon Hunter   (more nearby)
Date Taken
Tuesday, 2 May, 2023   (more nearby)
Submitted
Thursday, 4 May, 2023
Subject Location
OSGB36: geotagged! TQ 7144 6128 [10m precision]
WGS84: 51:19.4871N 0:27.5488E
Camera Location
OSGB36: geotagged! TQ 7143 6128
View Direction
East-northeast (about 67 degrees)
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Image Type (about): close look 
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