Canary Islands large white

The Canary Islands large white (Pieris cheiranthi) is a species of butterfly in the family Pieridae. It is endemic to the Canary Islands (Spain).^[1]

Pieris cheiranthi female showing the very large black spots characteristic of this species.

Canary Islands large white
Conservation status
Endangered  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Pieridae
Genus:	Pieris
Species:	P. cheiranthi
Binomial name
Pieris cheiranthi (Hübner, 1808)

Description

Very similar to Pieris brassicae, but the black discal patches are much larger and fused together. It reaches a size of 57 to 66 millimeters.

Distribution

The Canary white is widespread^{[dubious – discuss]} on La Palma, in Tenerife it is limited to the northern coastal areas. The last records from La Gomera dates back to 1975 and the species is probably extinct on that island. There are also unconfirmed reports from Gran Canaria.

Subspecies

• Pieris cheiranthi cheiranthi (Hübner, 1808)
• Pieris cheiranthi benchoavensis Pinker, 1969, La Palma (Canary Islands)

Habitat

The Canary White inhabits wet and moist shady gorges in laurel forests . It also occurs outside the laurel forest zone, for example, wet cliffs with a corresponding microclimate.

Biology

The female lays the eggs on the underside of leaves in piles of 5 to 50 . The larvae have a light green base color and are dotted black. At the top and sides they show a light yellow stripe. Among the food plants of the caterpillars are include Canary silverwort (Lobularia canariensis) and nasturtium ( Tropaeolum majus ). Crambe strigosa, endemic to the Canary Islands, seems to be the only natural food plant. The species flies in seven to eight consecutive generations, which partially overlap. The imago occurs throughout the year, a diapause is not known.

Threats

Threatened by habitat loss.