Length 2 to 3 mm. Without microscopic examination, the vertex pattern is the best identification feature, consisting of three pairs of dark marks, although these are variably fused in some forms. This species is also noticeably smaller than E. melissae.
On the continent this species uses several foodplants, but in the UK it has been mainly found on sage, and thus requires careful separation from the commoner E. melissae.
Adult: May to October.
E. decemnotata was first recorded from the London area in 2002 and is now probably widespread across southern Britain at least.
Uncommon in Leicestershire and Rutland but may be increasing in our area.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015