Scientific Classifications explained
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UK Nature > Beetles > Sphaeroderma testaceum
Scientific Name: Sphaeroderma testaceum
Common Name: Flea Beetle
There are two very similar species of Sphaeroderma in Britain and both feed on thistles. This is almost certainly S. testaceum. It is a small (3.5 to 4 mm), broad, oval species with shiny chestnut brown elytra.
It is usually found wherever the foodplants, various species of thistle, and occasionally Common Knapweed, are abundant, including roadsides, wasteland, woodland etc.
Active May/June to September. Pupation occurs in the spring and new generation adults are seen from May. Both larvae and adults feed on leaves. Common and widespread in England and Wales, less so further north.
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