. The butterflies of the British Isles. Butterflies. THE SMALL TORTOISESHELL. 69 exposure to the action of ammonia. The black markings vary in size, and sometimes those on the costal area are more or less connected or even confluent (Fig. 22) ; a greater or lesser amount of blackish suffusion on the hind wings (Fig. 23) generally accompanies confluence of the costal spots on fore wings. The two black spots between veins 2 and 4 occasionally enlarge and unite, or, on the other hand, they decrease in size to vanishing point. Some specimens have black scales between the second costal spot and the
. The butterflies of the British Isles. Butterflies. THE SMALL TORTOISESHELL. 69 exposure to the action of ammonia. The black markings vary in size, and sometimes those on the costal area are more or less connected or even confluent (Fig. 22) ; a greater or lesser amount of blackish suffusion on the hind wings (Fig. 23) generally accompanies confluence of the costal spots on fore wings. The two black spots between veins 2 and 4 occasionally enlarge and unite, or, on the other hand, they decrease in size to vanishing point. Some specimens have black scales between the second costal spot and the black spot on the inner margin, and the space between these two spots may be entirely covered with black and so form a. central transverse band (var. polarts). A modification of this form is shown on Plate 38, lower figure. The yellow patch between the second and third costal black spots is some- times continued right across the wings to the yellow spot on the inner margin, and in this respect resembles an Indian form of the species named ladakensis. Dwarf specimens result, in most cases, when the caterpillars have fed on hop (Humulus) ; at least, this is so in confinement. The egg is at first green, but after a time becomes tinted with yellow and the ribs stand out clear and transparent. The eggs are laid in a cluster on the under side of a terminal leaf of a nettle plant in May and again in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South, Richard. London : F. Warne
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbutterf, bookyear1906
