Now considered to be conspecific (at best, a coastal form of)
Common Wainscot M. pallens
Previous entry:
Nationally scarce (Nb) in saltmarshes in parts of southern England and south-eastern England, predominantly coastal. Very locally common in salt-marshes from southern Suffolk to East Kent and from West Sussex to western Hampshire. There are isolated records from the Isle of Wight and inland from the New Forest, Hampshire, Surrey and East Anglia. In Hampshire and on the Isle of Wight is more or less confined to coastal salterns where it replaces
M. pallens. Wingspan 34-42 mm. The most likely confusion species is
Common Wainscot M. pallens, which is pale straw-coloured to reddish ochreous with the whole wing finely striate, while
M. favicolor is pale buff through shades of fulvous to rich red-brown with forewing smooth and satiny, without striation (MBGBI Vol 9). Larva feeds on common saltmarsh-grass and probably on other grasses, as the female will lay on cock's-foot or annual meadow-grass and larvae can be reared successfully on either.