Cynips divisa
Red Pea Gall Wasp
Cynips divisa, Red Pea Gall Wasp. A small parasitic wasp that lays eggs on the undersides of Oak, Quercus robur & Quercus petraea, leaves. The tree responds by forming abnormal growth called galls. Each gall houses a developing wasp larva.
Photograph detail
Slide 1: Cynips divisa, Red Pea Gall Wasp. Mature galls on English Oak leaf underside, Quercus robur. Collected from disused railway. Hargill, Redmire. August.
Slide 2: Cynips divisa, Red Pea Gall Wasp. Section of mature gall showing wasp larva inside. Collected from disused railway. Hargill, Redmire. August.
Slide 3: Cynips divisa, Red Pea Gall Wasp. Immature galls on English Oak leaf underside, Quercus robur. Collected from disused railway. Hargill, Redmire. August.
Slide 4: Cynips divisa, Red Pea Gall Wasp. Section of immature gall on English Oak leaf underside, Quercus robur. Collected from disused railway. Hargill, Redmire. August.
Slide 5: Cynips divisa, Red Pea Gall Wasp. Galls on English Oak leaves, Quercus robur. Disused railway. Hargill, Redmire. August.