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Oak leaf with galls of Gall wasp, close-up.
Two attached oak leaves isolated on white with a clipping path.
Oak galls on an oak leaf close-up
The Valley Oak, can sometimes be riddled with large growths along the stem. Small wasps produce these oak apples or galls. The large oak apples, are induced by the gallwasp Andricus californicus. Shollenberger Park; Petaluma Wetlands; Petaluma; Sonoma County; California. Quercus lobata.
Oak branch with acorns and oak leaves isolated on white.
Oak leaf with galls caused by Neuroterus quercusbaccarum insect (family Cynipidae), isolated on white background, copy space
Oak galls, ink nuts on oak. Cynips quercusfolii
An oak is a tree or shrub in the genus Quercus. Oaks have spirally arranged leaves, with lobate margins in many species; some have serrated leaves or entire leaves with smooth margins. The fruit is a nut called an acorn or oak nut borne in a cup-like structure known as a cupule; each acorn contains one seed (rarely two or three) and takes 6–18 months to mature, depending on their species.
Plant Galls on a Oak Leaf, Sierra de Guadarrama National Park, Segovia, Castile Leon, Spain, Europe
Horizontal closeup photo of a group of three ripe brown acorns hanging by the stem on an Oak tree with green leaves in late Summer. New England high country NSW.
Bur Oak Acorn Cluster (Quercus macrocarpa) just starting to ripen. They were photographed in the â??sweet lightâ?? of the late afternoon sun.
A tiny acorn growing on an oak tree in a forest.
Oak gall
Small Acorns of Holm Oak (Quercus Ilex)
Oak branch isolated on white background. Oak apples on the undersides of oak leaves, are caused by chemicals injected by the larva of certain kinds of gall wasp.
Sessile Oak (Quercus petraea) - Küre Mountains National Park
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.
Acorns and oak leaves in Colorado, USA, North America
Leaf i found with some interesting creatures on the underside.
Colorful autumn leaves.
Acorn on white background
oak tree branch with acorns
Oak branch with acorns and leaves closeup
Autumn leaf colors against a black background
Biorhza pallida on Quercus robur
Quercus durata, the California scrub oak, or leather oak, is an oak endemic to California. Acorn. Fagaceae.
Oak gall
A single fruit capsule of a Coliguay Tree (Colliguaja odorifera) in late winter in central Chile, near the capital Santiago. The developing fruit has been invaded by the tiny Chalcid wasp, Aprostocetus colliguayae, that has caused a swollen gall to develop and protect the growing wasp larvae, effectively sterilising the fruit capsule of the Coliguay plant.
The Folii gall ball is formed by the fertilized larva of the oak gall wasp (Cynips quercusfolii).
Vertical closeup photo of brown acorns hanging on an Oak tree with green leaves in late Summer. New England high country NSW. Soft focus background.
Free Images: "bestof:Galla di quercia 3.jpg oak leaf and galls Own Enciclopedico Unidentified Quercus"
Giallo e Blu (Strisce) con tondo Rosso e ramo di quercia Verde.svg
Blason de la ville de Cabries (13).svg
Blason de la ville de Charrey-sur-Seine (21).svg
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Common Spangle gall.JPG
Common Spangle gall - detail.JPG
Oyster Gall on Oak leaf.JPG
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Quercus cerris Andrei1.JPG
Villa Doria Pamphili quercia grande.JPG
Gagulu ozols.JPG
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Andricus lignicola - Cola-nut Gall.JPG
Red-Pea Gall Cynips divisa.JPG
Red-Pea gall Cynips divisa on Oak.JPG
Gallfly galls.jpg
Common Spangle Gall - leaf upper.JPG
Andricus quercuscalicis galls on Sessile Oak.jpg
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Developing Oak Marble gall.JPG
Foloi oak forest.JPG
Oak-apple-and-acorn.JPG
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Oak park autumn.JPG
Developing artichoke gall.JPG
Quercus myrsinifolia ( shi ra ka shi ).jpg
Sughera di Pomezia.JPG
Lime leaf veination.JPG
Zapis u Malom Pozarevcu.jpg
Andricus foecundatrix (gallwasp) induced Artichoke gall on Quercus (oak).jpg
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Unknown plant 2015-12-15 20-11-28.JPG
Bare Oak Tree.jpg
Bois de Vaires chêne.jpg
Neuroterus numismalis (gall wasp) induced Silk button spangle galls on oak, Arnhem, the Netherlands.jpg
DabWlasta-zima.jpg
Knopper gall on oak (Quercus robur) induced by Andricus quercuscalicis (gall wasp), Arnhem, the Netherlands.jpg
Knopper gall on oak (Quercus robur), induced by Andricus quercuscalicis (gall wasp), Arnhem, the Netherlands.jpg
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Platano Napoleone.jpg
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