In Europe this species has a less northerly range than D. conspersa, and its eastward range extends to Japan. The caterpillar feeds on the seeds of Dianthus.
In his list of the lepidoptera of Ireland (Ent. Mo. Mag., 1866), Birchall remarks: "A pair of this well-known species, taken in Ireland by Mr. Tardy, are in the collection of Trinity College, but I am unable to indicate the exact locality of their capture." This is probably all the evidence we have of the occurrence of this species in the British Isles. The specimen represented on Plate [124], Fig. 2, is from the Continent.
The Lychnis (Dianthœcia capsincola).
Except that the brown ground colour is sometimes of a reddish shade, or greyish in tone, there is not much to notice in the variation of this species. Occasionally the outlines of the reniform and orbicular marks are usually white and distinct, and now and then the black markings are intensified. Two specimens are shown on Plate [124], Figs. 3 ♂, 4 ♀. The caterpillar is brownish ochreous freckled with darker, and with a pale central line and a series of dusky V-shaped marks on the back; a paler stripe along the whitish spiracles; head pale reddish brown, marked with darker brown. It feeds in July, sometimes in September, on campion, ragged robin, catchfly, and sweet-william and pinks. Fig. 3, Plate [130], is from a coloured drawing
by Mr. A. Sich, and represents the caterpillar, as seen when making the sketch, holding a seed between its front pair of legs and up to its mouth. The moth is out in May and June, and in some years there is a second flight in the autumn. The species is more or less common over the greater part of the British Isles.
The Campion (Dianthœcia cucubali).
This moth (Plate [124], Figs. 5 ♂, 6 ♀) is very similar to the last, but it has a distinct violet tinge, the orbicular mark is lengthened, and its lower edge touches, or almost touches, the reniform; the second line is distinct and straighter above the inner margin. The caterpillar is greenish, tinged with orange-brown on the front rings; the central line is greyish-brown, and the V-marks on the back and oblique stripes low down on the sides are orange-brown. It feeds on the leaves as well as the unripe seeds of campion, ragged robin, and catchfly in July, August, and September. The moth is out in June, and examples of a second generation in August. Like the rest of the species of the genus, it is most partial to flowers, but it occasionally puts in an appearance at the sugar patch. Pretty generally distributed over the British Isles. The range abroad extends to Amurland, China, and Japan.
The Tawny Shears (Dianthœcia carpophaga).
This species ranges in the colour of the fore wings from almost white, through various shades of ochreous brown.
The white and ochreous-tinted specimens are found in Kent and Sussex chiefly, whilst the ochreous-brown forms are more generally distributed in England. Barrett states that in the south of Scotland a form occurs in which the ground colour is very pale dull brown with all the darker markings and cloudings deep umberous, the cloudings more extended. Var. capsophila