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| Pl. 128. | ||||||
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| Pl. 129. | ||
| 1, 1a. Bright-line Brown Eye: caterpillar and chrysalis. | ||
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| 4. Brindled Green Moth: egg, natural size and enlarged. |
The caterpillar, which is glossy, and the skin much wrinkled, is of a bronzy-brown colour, with black-edged pale lines; there is a brownish plate on the first ring and a blackish one on the last; the spiracles are black and the head is brownish, marked with darker. It feeds from March to June on grasses, and in some years and localities occurs in enormous numbers, denuding considerable areas of grass land. Rooks and other birds devour them readily, and where their feeding places are on hillsides, they are apt to be washed off by heavy rain, so that the drains and ditches become filled up in places by masses of these caterpillars. Even after such wholesale destruction, the moths may still appear in the autumn in countless numbers. The male moths are sometimes seen flying in the sunshine and visiting the flowers of thistles, ragwort, etc. Such flight usually takes place between eight a.m. and noon, but both sexes have been seen flying over grass and heather continuously from just before midday to four p.m. The moths are also on the wing at night, and the male is very susceptible to the attraction of light. The species has occurred in all parts of the British Islands, but its presence in the south of England would appear to be more casual than elsewhere. The range abroad extends through Northern Asia to Siberia.
The Feathered Ear (Pachetra leucophæa).
Stephens, in 1829, figured one of two specimens of this species said to have been taken near Bristol in 1816, a part of England
from which no other specimen has ever been recorded so far as I am aware. In June, 1855, the late Mr. S. Stevens obtained a few specimens at sugar, at Mickleham, Surrey. Between the year last mentioned and 1894 five other specimens have been recorded from the same county, these are Redhill (W. R. Jeffrey), Boxhill (G. Elisha, a pair, and B. A. Bower), Reigate (R. Adkin). In Kent, specimens have been found in the Folkestone and Tunbridge districts, but the chalk downs between Ashford and Wye appear to be the headquarters of the insect in Britain.
A portrait of a male specimen will be found on Plate [128], Fig. 1, but the ground colour is much whiter in the majority of British specimens.
According to Dr. Chapman, the caterpillar varies from a nearly uniform nankeen-yellow with the markings only indicated, to a handsome larva with distinct black stripes. There is a pale dorsal line, quite narrow; thence to the black spiracles is divided into three longitudinal stripes, a dark dorsal, a dark (but less dark) lower one and a pale intermediate. In all these the ground colour is the same, nankeen-yellow, and the darker areas depend on the greater or less darkness of fine black mottlings, generally in fine wavy streaks running more or less longitudinally. The head is rather brown than yellow, mottled in a honey-comb pattern, with some black marking about the mouth parts. It feeds at night from July to March on various grasses, but seems to prefer Poa annua, and P. nemoralis. Dr. Chapman reared some of these caterpillars by keeping each individual in a separate glass jar and supplying it at frequent intervals with a fresh tuft of Poa annua. The moth is out from May to July, and hides during the day among the tufts of grass on chalk hills. It comes freely to sugar, and has been taken at privet blossom.