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botany branch brown canipid closeup cup cynipidae damage disease europe forest gall galls gallwasp german germany green growth hymenoptera infected infection insect knopper leaf leaves natural nature neuroterus oak parasite pedunculate plant quercus quercuscalicis robur summer tree wasp wasps wild wildlife woodland woods

Acorn Gall Wasp, Andricus Quercuscalicis, On Acorn Of A Pedunculate Oak, Quercus Robur, Bavaria, Germany, Europe Royalty-Free Stock Photo

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe Stock Photo

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Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe #137433993

Description

Gall wasps are insects that lay their eggs in plant tissue. This is where growths, known as Gqallen, develop. The larvae of the gall wasps grow in these growths. Most species of gall wasps occur in the Mediterranean region and on the Black Sea, there are no gall wasps in the tropics.

Acorn with Knopper Gall

Acorn with Knopper Gall

Acorn oak gall

Acorn oak gall

Acorn oak gall

Acorn oak gall

gall growing on acorn of oak tree

gall growing on acorn of oak tree

Knopper gall of the gall wasp Andricus quercuscalicis.

Knopper gall of the gall wasp Andricus quercuscalicis.

Knopper gall of the gall wasp Andricus quercuscalicis.

Knopper gall of the gall wasp Andricus quercuscalicis.

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Abnormal structure on acorn of oak tree Quercus family called Acorn Knopper Gall

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe

Acorn gall wasp, Andricus quercuscalicis, on acorn of a pedunculate oak, Quercus robur, Bavaria, Germany, Europe