SPHENELLA MARGINATA
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DESCRIPTION: An easily overlooked gall caused by a Tephrid Fly. The gall is found at the base of the flowerhead and is seen as a cone-shaped to elongated swelling which, in most cases, cases a widening of the bracts. DISTRIBUTION: Primarily found in southern Britain with the odd record noted from further North. HABITAT: On Various Ragworts.
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