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Its food plant is the stinging nettle (Urtica dioica), and on this the eggs are laid in April by females that have hybernated during the winter.
The caterpillar is full grown at the end of June or beginning of July. It is black, with numerous minute white wart-like projections. Its spines also are black, and its claspers brown.
The chrysalis may be found suspended by the tail on some object in the neighbourhood of the food plant, or sometimes on the food plant itself. It is of a greenish colour, with yellowish patches, but turns darker as the time approaches for the emerging of the perfect insect.
This event takes place in August, and the butterfly, after a brief period on the wing, seeks out a sheltered spot for its winter nap.
The Camberwell Beauty (Vanessa Antiopa)The reader will be fortunate if he succeeds in netting a specimen of this highly prized British butterfly. It derives its popular name from the fact that a few were taken in Camberwell about a hundred and fifty years ago; and since that time it has been seen and taken in variable numbers in several parts of England. So widely distributed, indeed, are its localities, and so few, comparatively, its appearances, that it would be useless to attempt to give any hints as to where it may be looked for. It is, however, a very common butterfly in many continental countries, and foreign specimens may be obtained from any dealer in entomological wares for a few pence each.
This rare British gem is illustrated in fig. 2 of Plate IV. Here it will be seen that nearly the whole of the surface is covered with a rich velvety purple brown, bordered with a black band containing blue spots; and outside this is a border of white, finely dotted and streaked with black. The continental specimens may be easily distinguished from the genuine Britishers by a darker border with a decidedly yellow tinge.
The eggs of this species are generally laid on the young leaves of the willow (Salix alba), in the spring, by females that have hybernated, but sometimes the nettle (Urtica dioica) and the birch (Betula alba) are selected for the food of the larvæ.
The caterpillar is black and spiny, and has a row of seven rather large reddish-brown spots on the back, commencing at the fifth segment.
The chrysalis, like those of the other members of this family, is angular and suspended by the 'tail.' The perfect insect appears in August, and may be seen from that month till October.
The Red Admiral (Vanessa Atalanta)There seems to be a tendency with many to under-estimate the beauty of certain natural objects because they happen to be so very common, and this is particularly the case with some of our most familiar butterflies. The beautiful Red Admiral (Plate IV, fig. 3) may possibly suffer in this respect; for, not only is it one of the commonest of our butterflies, but it fearlessly hovers among the flowers of our gardens, often venturing into the very heart of thickly populated towns.
The bright scarlet bands and white blotches of this gorgeous insect stand out boldly on the rich velvety black ground of the wings, and the additional touches of blue in the anal angles of the hind wings add to the effect. The under side of the fore wings is somewhat similar to the upper surface, but is relieved by brown and blue; and this side of the hind wings presents most beautiful and indescribable blendings of various shades of brown, grey, and pink. The female may be distinguished by the presence of a small white spot on the scarlet band of the fore wing.
The eggs are deposited singly on the nettle (Urtica dioica) in spring by females that have hybernated through the winter.
The caterpillar always feeds under the cover of a tent made by drawing leaves together. It is spiny, and its colour is usually a greenish or yellowish grey, spotted with black, and striped along the sides with white or yellow. When fully grown it bites the stem of the nettle nearly through a few inches from the top, so that the upper part of the plant bends over the withers. It then constructs a commodious tent by binding the leaves of this drooping portion together, and suspends itself from the roof of this strange home to undergo its metamorphoses.
The change to the chrysalis state takes place in July or August, and the perfect insect may be seen during August, September, and October in almost every part of the British Isles.
The Painted Lady (Vanessa Cardui)Although the time of appearance of this butterfly generally corresponds with that of the last species, yet it is exceedingly variable, so much so that it is impossible to give any fixed period as its season. It is, moreover, very capricious with regard to its localities and its numbers. Sometimes it will turn up unexpectedly in positive abundance in certain localities where previously it had been a mere straggler; and then, for some unaccountable reason, become comparatively scarce for several successive seasons.
The upper surface of this beauty (Plate IV, fig. 4) is adorned with pale red, orange, and black, and with five white spots near the tip of each fore wing. The under side of the fore wings is marked something like the upper, but much of the black is replaced by shades of brown. The hind wings are beautifully variegated beneath with greys and browns, and have a row of eye-like spots near the hind margin.
The eggs of this butterfly are laid singly on various species of thistles, particularly the common field thistle (Cnicus arvensis), generally in the month of June.
The caterpillar, which is black above and red beneath, with yellowish stripes along the back and sides, feeds under the cover of a silken web which it constructs among the leaves. It is full grown in July or August, when it suspends itself after the manner of the other Vanessas previous to undergoing its changes.
The chrysalis is angular, coloured with brown and grey, and adorned with brilliant gold spots.
The perfect insect may be seen at large throughout late summer and the autumn, and the eggs are laid by females that survive the winter.
The White Admiral (Limenitis Sibylla)The White Admiral (Plate IV, fig. 5) is neither so pretty nor so common as its red namesake, but it is nevertheless a fine insect, although the chief beauty is reserved for the under surface. Above, the ground colour is a very dark rusty brown, relieved by bands and spots of white. The under surface is beautifully marked with silvery blue, bright orange brown, and white, the latter being arranged just like the corresponding colour on the upper side.
It will be observed that this butterfly does not belong to the Vanessa genus; so, while we may look for family resemblances, we shall observe a few features in which it differs from the preceding species.
It is not by any means abundant, being unknown in Scotland and Ireland, and confined in England almost exclusively to the oak woods of the south, where its food plant – the honeysuckle (Lonicera Periclymenum) – abounds. Here it may be seen during July, gracefully sailing among the trees and across the open spaces.
The caterpillar is very different from those of the Vanessas. Its colour is dark green, with a narrow white stripe along each side. There are very conspicuous branched spines on the third and two following segments, also on the eleventh and twelfth; and smaller spines on most of the others. All the spines are of a brownish colour, with pink tips. While it is yet very small it prepares its winter quarters by bending round the remains of a leaf on which it has been feeding, securing the edges by silken threads, and then binding it to the stem of the plant. Soon after, the petiole becomes detached from the stem, and the little caterpillar then rests suspended in its snug swinging cradle, where it remains perfectly secure till the following April, when the warm sun calls it out to feed on the opening leaves. It continues at this till about the beginning of June, and then changes to a beautiful angular and eared chrysalis, of a bright green colour, marked with brown, and having brilliant silvery spots and streaks.
Family – ApaturidæThe Purple Emperor (Apatura Iris)This grand insect is the only British member of its family, and richly deserves its popular title. The male, which is figured on Plate V (fig. 1), exhibits a most gorgeous imperial purple, which is reflected at certain angles only from the upper surface of his large and powerful wings. His flight is lofty and vigorous, and among the topmost branches of majestic oaks, where he defies the efforts of would-be capturers. Unlike our other butterflies, he is also a very quarrelsome creature, and will not hesitate to fiercely attack a brother Emperor who dares approach the branch he has selected for his throne.
Many attempts have been made to capture this prized creature by means of a large net mounted on the end of a pole twenty or thirty feet in length, but the wielding of such a cumbersome implement against so powerful an insect is no mean task, and but few fall a prey to such a snare. But it so happens that this imperial personage has a very depraved appetite, the indulgence in which has often brought him to ruin. Instead of searching out the sweets so bounteously supplied by the blossoms that are so attractive to other lepidopterous insects, he delights in sipping the waters of the filthiest puddles, and imbibing the odoriferous moisture of dung and the decomposing carcases of animals. So deeply seated is this depravity of taste that the Emperor may be netted with ease while indulging in his sumptuous feast, and is even to be taken at times with the fingers.
The knowledge of this peculiarity of the imperial palate has led entomologists to abandon the awkward net, and to bait the woods with viands that alone can entice his highness from his lofty seat; and many a splendid specimen has been easily captured while enjoying the luxurious juice of a dead cat, stoat, or rabbit, or of a seething mass of pig's dung.
The female is larger than her mate, and does not display the beautiful purple reflections that adorn the male. She is very different, too, in her habits, for she sits nearly all day on high branches of trees, giving her attention to the graver duties of an imperial mother, and is consequently but seldom seem. She lays her eggs in July on the sallow (Salix Caprea) or the poplar (Populus), and in less than a fortnight the young caterpillars are hatched. They feed on till the leaves are falling, and then fix themselves by their claspers to a silken carpet which they construct on a twig. Here they remain, exposed to all the wintry blasts and frosts, till the new leaves are out in the spring, when they again commence feeding, and continue to do so till they are full grown – in May or June.
Fig. 76. – The Purple Emperor – Under Side.
The under side of this species is shown in fig. 76, in which will also be observed the eye-like spots of the fore wings which have given rise to its specific name (Iris).
The caterpillar (Plate VIII, fig. 5) is a very peculiar creature. Its body is green, with seven oblique yellowish stripes on each side, and it has a pair of horns attached to its head.
The chrysalis (Plate VIII, fig. 10) may be found in June, suspended to the under side of a leaf. It is of an apple-green colour, and still exhibits the oblique stripes which we observed in the caterpillar.
This insect is not to be found in either Scotland or Ireland, but is more or less abundant in many of the oak woods of the midland and southern counties of England. Among the numerous favoured localities, we may mention Colchester, Forest of Dean, Northamptonshire, Ipswich, Huntingdonshire, Buckinghamshire, Epping, Lyndhurst, and the Isle of Wight.
CHAPTER XIV
THE BROWNS AND HEATHS
Family – SatyridæThis family contains eleven British species, often spoken of collectively as the 'Browns,' since in most of them the prevailing tints are various shades of brown. They are decidedly dingy in comparison with the beautiful butterflies we have been previously observing; but to this statement we must allow one marked exception, for the family includes the beautiful Marbled White, which stands out prominently among its fellows for brilliancy and boldness of colour.
The caterpillars of the 'Satyrs' have no spines, but their bodies are covered with very minute hair-bearing warts that give them a soft velvety appearance. The hinder extremity tapers off considerably, and terminates in two points.
The chrysalides are not angular like those of the preceding species, and though generally suspended by the tail, are sometimes found quite free among leaves and grasses on the ground.
The perfect insects are rather feeble fliers, and generally take so little notice of intruders that they are easily caught in the hand. Their wings are devoid of angles, and they have only four perfectly developed legs.
The Marbled White (Melanargia Galatea)Our first member of this family is the exception to which we have already alluded as a relief to the general dinginess of the 'Browns.' Its colours above are cream and black, arranged as shown in Plate V, fig. 2. The under side (fig. 77) is marked with white, black, and greenish grey, with a row of eye-like spots parallel with the hind margin of the hind wings.
Fig. 77. – The Marbled White – Under Side.
This butterfly is not known in Scotland or Ireland, nor is it to be found in several of the northern counties of England. Its chief haunts are the waste cliffy grounds of the southern and some of the midland counties of England, where it is usually restricted to certain small districts. In some places it is really a common insect, and among these may be mentioned Brighton, Horsham, Dover, Folkestone, Margate, Gravesend, New Forest, parts of Gloucestershire, Cambridgeshire, and Devonshire, also in the Isle of Wight and South Wales.
The perfect insect is out in July, during which month the eggs are deposited on various grasses, or indiscriminately on leaves and stems in grassy spots.
The caterpillar feeds on grasses; and, being still small at the end of the autumn, hybernates during the winter among the stems of grass. It feeds again in April, and is fully grown by the end of May. Its colour is a dull green or brownish, with a darker stripe down the back, and lighter stripes along the sides. Its spiracles are black.
The chrysalis is pale brown, marked with lines of a slightly darker shade. It may be found among grass stems, without any attachment, during the month of June.
The Small Ringlet (Erebia Epiphron)On account of the very limited range of this butterfly, only those who have the opportunity of visiting its haunts can have any practical acquaintance with its natural history. It is almost exclusively confined to the lake district in England, to a few mountainous localities in Scotland, and to one or two similar localities in Ireland. Its strong partiality for elevated situations has earned for it the popular name of Mountain Ringlet.
The colour of the upper surface (Plate V, fig. 3) is a dark brown, with a broad band of rusty brown, parallel with the hind margin of each wing, and broken by the wing rays. Each division of these bands has often a black central spot, but frequently these are entirely absent. The colouring of the under side is very similar but less defined, and the rusty spots of the hind wings are very small.
The butterfly is out in June and July. The caterpillars, which are green, with white stripes along the sides, feed on various grasses. They hybernate during the winter, and change to the chrysalis state in the following May or June.
The Northern Brown (Erebia Æthiops)The colour of this species (Plate V, fig. 4) is a rich dark brown, with rust-coloured and black spotted bands arranged something like those of the last. The markings, however, are very variable. There are usually four black spots on the band of the fore wings, but the first two of these are always united, and centred with white. The third is often very small or entirely wanting.
The under side of the fore wings is marked something like the upper, but the hind wings on this side are grey, with two broad bands of a darker colour.
As its popular name implies, this butterfly is a northerner. It is common in Scotland, where it flies in elevated spots. In England it is confined to the mountainous districts of the north.
The perfect insect is at large in July and August, during which time the eggs are deposited on various grasses or on low-growing herbage in grassy spots.
The caterpillar is of a brown colour, and has a narrow black stripe down the middle of the back, and two other stripes, lighter than the ground colour, one on each side. At about the end of June it turns to a chrysalis of a brownish colour.
The food plants of this species include a number of common grasses.
The Speckled Wood or Wood Argus (Pararge Egeria)Most of our butterflies delight in the hot sun, and are to be seen on the wing only when it is shining brightly. This fact is particularly noticeable on a bright day with occasional heavy clouds. While the sun's rays are pouring uninterruptedly on the landscape, numbers of these light-lovers are to be observed flitting about; but when the dense shadow of a passing cloud creeps over the ground they rapidly disappear from view, having settled down to rest on leaves and stems. Then, as soon as the shadow passes away, the air is again enlivened with their sports and flittings.
The Wood Argus is a marked exception to this rule. It delights in the cool shade of the narrow paths of woods, where it slowly flies up and down the lonely footpath, taking but little heed of strangers that intrude on its haunts, and seldom venturing into the full blaze of the sun unless pursued. Even on dull days it continues its solitary flight, and may even be seen on the wing while a soft rain is bathing the dripping foliage.
Fig. 78. – The Wood Argus – Under Side.
The upper surface of this pretty butterfly is shown on Plate V, fig. 5, and the under side in the accompanying woodcut. Both sides are prettily marked with various shades of brown and buff, and adorned with white-centred dark eye-spots which have earned for it the name of Argus.
It first appears on the wing in April, and may be seen from this month continuously to the end of August.
The food plants probably consist of many species of grasses, the cock's-foot (Dactylis glomerata) and couch grass (Agropyron repens) being among the number, and the eggs are laid on or in the neighbourhood of these during the summer months.
The caterpillar of this species is of a dull greenish or brownish colour, and it has two whitish stripes (sometimes three) down the middle of the back, and similar stripes along each side. It hybernates during the winter, and is full grown in March, when it changes to a dull green or brownish chrysalis, which is streaked with black, and has a few white dots on the back.
It has been stated that the butterfly is on the wing from April to August, and, according to some authorities, there are no less than three broods during this time, following each other in rapid succession. It is common throughout England and Ireland, and is known in parts of Scotland.
The Wall Butterfly (Pararge Megæra)Belonging to the same genus is another very familiar butterfly – the Wall – which receives its popular title from its peculiar habit of frequently resting on walls and stony banks. It is one of the first, if not the first, to take to the wing in the morning, and is generally the last to seek its hiding place in the evening. I have seen it actively flying about during August, as early as 7.30 in the morning, and found it still flitting from one spot to another along the western side of a wall as late as 8 in the evening, as if in search of a convenient shelter for the fast approaching night.
This pretty 'Brown' must be familiar to the reader, and the coloured drawing on Plate V (fig. 6) will at once serve for purposes of identification without the necessity of a wordy description. It may be mentioned, however, that the male (the sex figured) is smaller than the female, and is further distinguished by a broad dark oblique band passing across each fore wing.
The Wall is a double-brooded butterfly, the first brood appearing in May, and the second in August. The caterpillars which produce the latter may be found on the cock's foot (Dactylis glomerata) and other grasses in June, while those of the former are hybernators; and the chrysalides of the two broods may be found in April and July respectively.
The colour of the caterpillar is green, with a slightly darker stripe down the middle of the back, a pale stripe along each side, and another similar stripe about midway between these two.
The chrysalis is green with the exception of the more prominent parts of its surface, which are almost white.
This species is very common in almost every locality in Britain.
The Grayling (Satyrus Semele)The Grayling is the largest of our 'Browns,' and, although a powerful flier, it seldom takes long flights. The female, which is shown in fig. 7, Plate V, is really a beautiful creature, the light markings of which stand out in bold contrast with the deep brown ground colour; but the male is comparatively dingy, there being much less contrast between the ground and the markings. He is also smaller than his mate.
Fig. 79. – The Grayling – Under Side.
The under side of both sexes is similar (fig. 79), the pattern of the fore wings being much like that of the other side, but considerably lighter, and the hind wings are beautifully marbled with various greys and browns.
This species is not nearly so common as the two preceding, but it is very widely distributed, and is exceedingly abundant in some parts. On some of the heathery cliffs and downs of the south and south-west coasts it is so plentiful that the butterflies are started into the air at almost every step, for it seldom flies except when disturbed. It is a common insect in Ireland, and also in parts of Scotland.
The caterpillar is a hybernator, and may be found feeding on grasses in the autumn and the spring. It changes to the chrysalis in June, and the perfect insect is on the wing from June to the beginning of September.
The colour of the caterpillar is pinkish drab above, and greenish drab beneath. A dark brown stripe, edged with a lighter colour, passes down the middle of the back, and a dark line on each side. It changes to a dark reddish-brown chrysalis on the surface of the ground, or, according to some observers, a little beneath the surface.
The Meadow Brown (Epinephele Janira)Although this very common butterfly is usually considered to be the dingiest of its family, yet it must be admitted that the colour of a freshly emerged specimen is really very rich.
The male is of a dark brown colour, with an indistinct patch of a lighter tawny brown near the outer margin of the fore wings, and a white-centred black eye-spot near the costal angle of the same wings. The female (Plate V, fig. 8) is of a lighter colour, the eye-spot on her fore wings is larger and far more conspicuous, and an irregular patch of light orange brown occupies a large area of each of the same wings. She is, moreover, larger than her mate, and in every way a more attractive insect.
The Meadow Brown abounds everywhere, from June to September, and may be seen on grass land and waste grounds where other butterflies are seldom found.
The caterpillar is green, and is rendered slightly rough by a number of minute warts. There is also a white stripe on each side. It feeds on various grasses in the autumn, hybernates during the winter, and is full grown in May.
The chrysalis is apple green, spotted with a lighter green, and has several black markings.
The Large Heath (Epinephele Tithonus)This butterfly is sometimes called the 'Small Meadow Brown,' and is certainly much like the last species, both in colouring and habits.