Western White (Pontia occidentalis) wildspecies.ca

Secure

Present in regions

Migratory species: Unknown

Taxonomic group:

Butterflies

Learn more about all species of Butterflies in Canada.

The General Status ranks do not have legal weight. They are meant to identify the species that may be at risk in Canada.

Access other data on this species on the NatureServe Explorer.

Common Names

English common name:

Western White

In English, species in the subfamily Pierinae are named "White", except for genera Anthocharis and Euchloe.

French common name:

Piéride de l'Ouest

In French, species in the subfamily Pierinae are named "Piéride" (feminine), except for genera Anthocharis and Euchloe.

Year	English common name	French common name
2000	Western White	Piéride de l'Ouest
2010	Western White	Piéride de l'Ouest
2015
2020

Source: iNaturalist

Scientific Names

Higher Classification:

Superkingdom

EUKARYOTA

Kingdom

ANIMALIA

Subkingdom

BILATERIA

Infrakingdom

PROTOSTOMIA

Superphylum

Ecdysozoa

Phylum

Arthropoda

Subphylum

Hexapoda

Class

Insecta

Subclass

Pterygota

Infraclass

Neoptera

Superorder

Holometabola

Year	Scientific name	Family	Order
2000	Pontia occidentalis	Pieridae	Lepidoptera
2010	Pontia occidentalis	Pieridae	Lepidoptera
2015	Pontia occidentalis	Pieridae	Lepidoptera
2020	Pontia occidentalis	Pieridae	Lepidoptera

Priority Score

This species is not designated as may be at risk

Trends in rounded national ranks

Year	Rounded National Rank	Description of the change	Reason for change	Notes
2000	Secure
2010	Secure
2015	Secure
2020	Secure

Original Ranks:

Canada
2000	Secure - 4
2010	Secure - 4
2015	Secure - N5
2020	Secure - N5

Yukon
2000	Secure - 4
2010	Secure - 4
2015	Secure - S5
2020	Secure - S5

Northwest Territories
2000	Secure - 4
2010	Secure - 4
2015	Apparently Secure - S4S5
2020	Apparently Secure - S4S5

Nunavut
2000	Sensitive - 3
2010	Sensitive - 3
2015	Apparently Secure - S4
2020	Apparently Secure - S4

British Columbia
2000	Secure - 4
2010	Secure - 4
2015	Secure - S5
2020	Secure - S5

Alberta
2000	Secure - 4
2010	Secure - 4
2015	Unranked - SNR
2020	Secure - S5?

Saskatchewan
2000	Secure - 4
2010	Secure - 4
2015	Secure - S5
2020	Secure - S5

Manitoba
2000	Secure - 4
2010	Secure - 4
2015	Secure - S5
2020	Secure - S5

Ontario
2000	Sensitive - 3
2010	Sensitive - 3
2015	Vulnerable - S3
2020	Vulnerable - S3

Quebec
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

New Brunswick
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Nova Scotia
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Prince Edward Island
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Newfoundland and Labrador
2000	Not Present
2010	Not Present
2015
2020

Labrador
2000
2010
2015	Not Present
2020	Not Present

Newfoundland
2000
2010
2015	Not Present
2020	Not Present

Pacific Ocean
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Western Arctic Ocean
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Eastern Arctic Ocean
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Atlantic Ocean
2000	Not Present
2010	Not Present
2015	Not Present
2020	Not Present