Nettle leaf gall

Nettle leaf gall

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Caption: Nettle leaf gall, artwork. Three views of a leaf gall (red) on a stinging nettle leaf (Urtica dioica). The gall is caused by the parasitic larva of the nettle gall midge (Dasineura urticae). The larva is seen in the cross-section at bottom. The larva emits a chemical which stimulates growth and feeds on the juices and tissue produced inside the gall cavity. A slit in the top of the gall (red) provides an exit point.

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Keywords: abnormal, abnormality, artwork, biological, biology, botanical, botany, cross-section, damage, damaged, dasineura urticae, developing, development, diagram, disease, diseases, drawing, entomology, gall, galls, growth, illustration, larva, leaf, life cycle, nature, nettle gall midge, parasite, parasitic, parasitism, pathogens, pathology, plant, stinging nettle, three, trio, urtica dioica, zoological, zoology

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