The Small Fan-foot (Zanclognatha grisealis).
This species (Plate [35], Fig. 3) is somewhat similar to the last in colour, but it is smaller, and the submarginal line is rather curved, and runs to the tip of the fore wing. The caterpillar is obscurely greyish, with a pinkish tinge; three darker lines along the back, the central one broadest, but not distinct on the first three rings; head, brown, freckled with darker brown, plate of first ring of the body, blackish brown. It feeds on oak, and may be beaten from the foliage in August and September. Buckler states that this species passes the winter in the chrysalis state, and this has been confirmed by Plum. (Plate [34], Fig. 1; after Hofmann.)
The moths emerge in June and July, and may frequently be dislodged from trees, hedges, and undergrowth in the daytime. Pretty generally distributed over the southern half of England, plentiful in many parts, and widely spread over the northern half of the country. It is not scarce in some parts of Wales, but seems to be uncommon in Scotland, and has been recorded from the south only. In Ireland it has a wide range, but does not appear to be noted as common in any locality.
The Olive Crescent (Zanclognatha (Sophronia) emortualis).
The species depicted on Plate [36], Fig. 8, from a continental specimen, is exceedingly rare in England, in fact, apart from the specimens mentioned by early authors, only three authentic British examples appear to be known. These are—one captured at Brighton, Sussex, in June, 1858; one in June, 1859, in Epping Forest, Essex; and one taken at sugar by the Rev. B. H. Binks, of Stonor, Henley-on-Thames, in July of the year last mentioned.
Stephens (1834), who gives a very unsatisfactory description
of the species, refers to two specimens, of which one was in his collection, from Devonshire. Wood's figure (768) of emortualis, in the Westwood edition of the Index Entomologicus, does not represent this species, but is far more like Herminia derivalis, Hübner.
Abroad, the range extends to Amurland.