As caterpillars, Glanville fritillaries enter a stage of diapause, which is a period of suspended development, during the winter time.

[4] The spiked speedwell and ribwort plantain are the Glanville fritillary's preferred plants to lay eggs and to eat as larvae.

Though widespread, populations in Finland are at risk because they are not able to travel great distances as easily as other species, such as monarchs, if their environment should suddenly become unsuitable.

Some relations that was disappointed by her Will, attempted to let it aside by Acts of Lunacy, for they suggested that none but those who were deprived of their senses, would go in Pursuit of butterflies.The Glanville fritillary is found across Europe and temperate Asia.

It is most commonly found on Åland (Finland), which host a network of about 4,000 dry meadows, the fritillary's ideal habitat.

The Glanville fritillary is a highly restricted species within the UK, being confined to the Isle of Wight and even there being largely limited to the southern coast.

There are small introduced populations on the Somerset coast and two in Surrey: one near Wrecclesham, and one at a nature reserve in Addington, near Croydon.

Above uniformly pale yellowish red, marked with black, somewhat recalling a chess-board, the white fringes being checkered.

Excepting the pale yellow black-dotted apex, the forewing beneath uniformly reddish leather-yellow, with dispersed blackspots, which vary in number.

[14] Caterpillars are about 25 mm long with a reddish-brown head and a spiny black body with small white dots.

They feed on their host plant, either Plantago lanceolata (ribwort plantain) or Veronica spicata (spiked speedwell).

[15] As an attempt to fend off predators and parasitoids, the spiked speedwell emits volatile organic compounds (VOCs) when threatened.

The oviposition of the butterfly on this plant was able to induce the increase of two ketones (6-methyl-5-hepten-2-one and t-geranylacetone) and the suppression of green leaf volatiles (GLVs).

These clutches can range in size from 50 up to 300 eggs and are laid on the underside of the larval food plant of either Plantago lanceolata (ribwort plantain) or Veronica spicata (spiked speedwell).

The Pgi-f allele contributes to a higher metabolic rate and the ability for females to take advantage of the climate of the early day - both of which factors allow for increased clutch size.

[20] A selection of previously designated Subspecies include: As the global temperature of the Earth warms each year, many butterfly species are forced to shift northward in order to keep living in their preferred climates.