Black-veined white

Appearance

The black-veined white has a wingspan of 51 to 70 mm. Females are commonly larger than males. The upperside of both forewings and hindwings is a translucent white boldly veined with black.

The underside is similar in the male but the female has brown veining. Moreover, the female loses most of her scales by rubbing her wings together, resulting almost-transparent.

This butterfly can be distinguished from other members of white butterflies of the genus ''Pieris'' by its distinctive veined wings.

The eggs are yellow at first, darkening with age. The caterpillars are greenish grey with transverse banding. The pupa is creamy white, marked with black, attached by a silken girdle to a twig.

Naming

Subspecies include:
⤷  ''Aporia crataegi adherbal'' Japan
⤷  ''Aporia crataegi augusta'' Sicily
⤷  ''Aporia crataegi augustior'' – Jordania, Israel
⤷  ''Aporia crataegi banghaasi''
⤷  ''Aporia crataegi basania'' Alps
⤷  ''Aporia crataegi colona'' – Russia
⤷  ''Aporia crataegi crataegi'' Scandinavia
⤷  ''Aporia crataegi fert'' Greece
⤷  ''Aporia crataegi hyalina'' Asia Minor
⤷  ''Aporia crataegi iranica''
⤷  ''Aporia crataegi karavaievi''
⤷  ''Aporia crataegi mauretanica'' Northern Africa
⤷  ''Aporia crataegi meinhardi'' Siberia- Kamchatka Peninsula
⤷  ''Aporia crataegi pellucida'' Kopet-Dagh
⤷  ''Aporia crataegi rotunda''
⤷  ''Aporia crataegi rutae''
⤷  ''Aporia crataegi sachalinensis'' Sakhalin
⤷  ''Aporia crataegi shugnana'' Pamir
⤷  ''Aporia crataegi tianschanica''
⤷  ''Aporia crataegi transitoria''

Distribution

It occurs in open forest, grazing land, orchards. lanes, gardens, meadows and thickets throughout most of Europe, temperate Asia, Korea, and Japan. This species is extinct in the British Isles.

Behavior

The flight period of the black-veined white is between April and July. The adults are quite social and their abundance varies greatly from year to year. The eggs are laid on the food plant, usually a member of the rose family Rosaceae and often on trees and bushes.

The eggs are laid in groups of 30 to 100. They take about three weeks to hatch. The caterpillars tend to remain in a group with a communal larval web. This species has one generation each year. The caterpillars overwinter communally in a webbing tent with entwined leaves. Caterpillars feed close together on the leaves of the food plant at first, before dispersing in the later developmental stages to other parts of the tree.

The pupal stage lasts about three weeks.

Habitat

It occurs in open forest, grazing land, orchards. lanes, gardens, meadows and thickets throughout most of Europe, temperate Asia, Korea, and Japan. This species is extinct in the British Isles.