Cynips disticha Hartig, 1840, (a gall wasp)


6 Sep 2008 at OSGR: SU56 in Berks, England

Record Summary4 agamic galls on leaf underside of Pedunculate Oak
Found asAgamic gall
Date6 September 2008
Associated organismQuercus petraea
OS grid refOSGR: SU56
Lat/Lon51° 30’ N, 1° 10’ W
Vice CountyBerks, VC no: 22
CountryEngland
Voucher6 Sep 2008[B]
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Notes:

Group of four hard, pale green galls each with a brown, apical mark, on underside of leaf of Pedunculate Oak.

Galls: 4/5.5mm diam, nearly globular (slightly elongated), apparently minutely warty but this is mostly due to pale spots within the distal half of the wall; chamber divided by thin layer into two halves, larva in proximal half.

The following literature was used to identify this find:

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