Friday 28 January 2000

Western Tiger Swallowtail (Papilio rutulus)

OTHER NAMES: N/A
Latin Etymology: Papilio ("butterfly") rutulus ("red headed")

Adult Western Tiger Swallowtail (Papilio rutulus) at San Francisco, California - September 2022

Featured Subspecies: ?
Weight: ?  /  Length: 5.5cm  /  Wingspan: 7-10 cm
NO UK STATUS IUCN Red List: Not Yet Evaluated 

A large and common swallowtail of the Western half of the USA and and small parts of Mexico and Canada. Their primary host plants are trees, in particular cottonwood, aspen, poplar, alder, ash and willow and as such they are often found in forest and parkland.

Related Species:
Order: Lepidoptera
Family: Papilionidae
Genus: Papilio
SUBSPECIES: none - monotypic 

 - Sighting Locations -

UNITED STATES 
Breeds in the West including Alaska, Winters in South, Resident in thin strip along Pacific Coast
 - CALIFORNIA 2022 TRIP: Seen at  San Francisco 

Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto

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