Papilio rutulus (Western Tiger Swallowtail)

Papilio rutulus, also called Western Tiger Swallowtail is a butterfly from Nearctic ecozone (North America). The first description was in 1852 by Lucas. The wingspan is about 9 – 12 cm. Papilio rutulus is a member of the family PAPILIONIDAE. The basic colour of this butterfly is yellow with black stripes. The hind wings have tails.



Photos for easy identification

Photo © by Naturhistorisches Museum Wien; Photographer Thomas Neubauer
Photo © by Naturhistorisches Museum Wien; Photographer Thomas Neubauer
Photo © by Naturhistorisches Museum Wien; Photographer Thomas Neubauer
Photo © by Naturhistorisches Museum Wien; Photographer Thomas Neubauer

Here you can see some photos of Papilio rutulus (Western Tiger Swallowtail) (male above / female below). Papilio rutulus is a member of the family PAPILIONIDAE from Nearctic ecozone (North America).


Description

The forewings are yellow. Four black stripes dominate the wing. The outer edge is black and contains a chain of little, yellow spots.
The underside of Papilio rutulus is very similar to the upside. But, the outer edge is brown and it contains two yellow stripes.

The hind wings of Papilio rutulus are yellow and they have tails. The edge is very wavy. In the middle of the wing there are two black stripe. The inner edge is black. The outer edge is black and contains a chain of little, yellow spots. At the inner edge there is a blue-black-red eye-spot.
The underside is very similar to the upside. But, the stripes and the outer edge are brown. And there are some additional orange spots.

The body (abdomen) is striped in black-yellow. The thorax is striped in black-yellow. The head is striped in black-yellow. The underside of all parts is yellow and has black stripes.

Sex differences: None


Distribution

Papilio rutulus is a butterfly from the Nearctic ecozone (North America). The area of ​​distribution of this butterfly stretches from the Westcoast of USA (Washington, Idaho, Oregon) to Canada (British Columbia).

This world map shows the ecozones in which this butterfly is distributed.

Larval food

 Betulaceae:

Salicaceae:

Rosaceae:

Ulmaceae:

General information

The first description of this butterfly was in 1852 by Lucas. There are no subspecies.

The caterpillar is green with one black strip. This strip has two fake eyes. The pupa is brown and has a silken belt.


Protection provisions / Red List

Similar and closely-related species

Papilio glaucus Linnaeus 1758 (Eastern Tiger Swallowtail)


Scientific name

Papilio rutulus Lucas 1852


Other names

 Western Tiger Swallowtail


Classification / Taxonomy / Family tree

To the family tree (Genus: PAPILIO)...


 

To the top

Back to family Papilionidae from NEARCTIC (NORTH AMERICA)


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