. The moths of the British Isles . ^- 2 A 360. 1-3. Map-winged Swift. 4-6. Common Swift. 7,8. Gold 2 PL 159. 1, irt. Common Swift: cntcrpillar ajid chrysalis. 2, 2«. Ghost Moth : caterpillar and chrysalis (enlarged). 3- Orange Swift: caterpillar. 2 A 361. ORANGE SWIFT. 361 is somewhat similar in appearance to a typical female. Inother male specimens of this insular race the wings are prettymuch of the typical colour, but the markings on the front pairare reduced both in number and size. Mr. H. McArthur, whohas collected a good deal in the Shetland Isles, states that inUnst, the m
. The moths of the British Isles . ^- 2 A 360. 1-3. Map-winged Swift. 4-6. Common Swift. 7,8. Gold 2 PL 159. 1, irt. Common Swift: cntcrpillar ajid chrysalis. 2, 2«. Ghost Moth : caterpillar and chrysalis (enlarged). 3- Orange Swift: caterpillar. 2 A 361. ORANGE SWIFT. 361 is somewhat similar in appearance to a typical female. Inother male specimens of this insular race the wings are prettymuch of the typical colour, but the markings on the front pairare reduced both in number and size. Mr. H. McArthur, whohas collected a good deal in the Shetland Isles, states that inUnst, the most northern island of the group, more or lesstypical humuli wQvt found on the cliffs facing south-east, whilstthe majority of the specimens obtained in boggy meadows, etc.,were of the thuleiisis form. The caterpillar feeds on the roots of plants, such as burdock,dandelion, dead-nettle, etc. It is full grown in May, and themoth is out in June and July. (Plate 159, Fig. 2 ; after Hofmann.)The males may be seen in the evening, sometimes in numbersin grassy places, swaying themselves to and fro without making
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