Edinburgh Pug (Eupithecia helveticaria).
The two examples of this species on Plate [96], Figs. 3, 4, are from the Pentland Hills, Scotland, and are referable to anglicata, Millière. In this form, which is smaller than the type, the fore wings are grey brown, more or less tinged with reddish, and sometimes inclining to purplish; the whitish edged dark cross lines, especially the basal first and second, are usually distinct, and the veins are often marked with black and white. Ab. arceuthata, Freyer, a paler grey form, occurs in Buckinghamshire, and has also been reported from Surrey. The specimens from the latter county, at least those from the Dorking district, were subsequently referred to E. satyrata.
The stoutish and rather rough caterpillar is green, with three lines along the back, the central one dark green, and the others white; a broad yellowish stripe low down along the sides. It feeds on juniper, in June and July, and sometimes again in September and October. The moth is out in April, May, and June, and a second brood may appear in August and September. The species seems to occur among juniper, in Scotland, from Roxburghshire to Sutherland. It is local in North Lancashire, has been reported from near Llandudno, North Wales, and, as adverted to above, occurs in Bucks.
Satyr Pug (Eupithecia satyrata).
Four specimens are depicted on Plate [96]. Fig. 5 represents the typical pale brownish grey form, in which the cross lines are indistinct, and the veins are marked with white and dusky. Fig. 6 shows the rather browner, moorland ab. callunaria, Doubleday, and Figs. 7 and 8 depict two forms of the Shetland race, known as var. curzoni, Gregson. A much rarer form than
any of the above is the pale brownish ab. pernotata, Guenée (cauchyata, Meyrick).
The caterpillar is greenish with a series of purplish-brown edged, dusky green, Y-shaped marks along the back; above the yellow spiracular line is a row of slanting purplish blotches; sometimes the general colour is paler, and the markings on the back and sides rosy; occasionally, the whole of the back is rosy (adapted from Crewe). It feeds on the flowers of knapweed (Centaurea nigra), scabious, hawkweed (Hieracium), heath, sallow, etc., etc.: August and September.
The moth is out in May and June, and is found in woodlands, and on heaths and moors. It is widely distributed over the British Isles.