Main: (Geometridae / Sterrhinae)
70.005 [B&F: 1704] Silky Wave (Idaea dilutaria) (Hübner, [1799])


A vulnerable Red Data Book species, on grassy slopes and south-facing hillsides in parts of western England, a priority species under the UK Biodiversity Action Plan. Not recorded in Hampshire or on the Isle of Wight to date. Wingspan 20-22 mm. The most likely confusion species are Satin Wave I. subsericeata and Dotted Border Wave I. sylvestraria from which distinguished by the lack of dots in centre of wings and, usually, by lack of dots along border of wings. Larva feeds on Common Rock-rose.

Flightime guide

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
Click for distribution map

Web Hosting from Vision Internet Limited