Spilosoma pteridis

Spilosoma pteridis, the brown tiger moth, is a moth in the family Erebidae. It was described by Henry Edwards in 1875. It is found in the United States in western Oregon and Washington, British Columbia and northern Idaho. The habitat consists of wet forests west of the Cascades, including coastal rainforests, low elevation mixed hardwood-conifer forests, as well as higher elevation conifer forests in the Cascades.

Brown tiger moth
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Erebidae
Subfamily: Arctiinae
Genus: Spilosoma
Species:
S. pteridis
Binomial name
Spilosoma pteridis
Synonyms
  • Antarctia rubra Neumoegen, 1881

The length of the forewings is 11–13 mm. The forewings are dark reddish grey, with a faint darker grey discal spot and lines. The hindwings are dark smoky grey. Adults are on wing from late spring to early August.

The larvae probably feed on various herbaceous plants.[1]

Subspecies

There are two subspecies:[2]

  • Spilosoma pteridis pteridis
  • Spilosoma pteridis rubra (Neumoegen, 1881)
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References
  1. Pacific Northwest Moths
  2. Spilosoma pteridis at Markku Savela's Lepidoptera and Some Other Life Forms
  • Beccaloni, G.; Scoble, M.; Kitching, I.; Simonsen, T.; Robinson, G.; Pitkin, B.; Hine, A.; Lyal, C., eds. (2003). "Spilosoma pteridis". The Global Lepidoptera Names Index. Natural History Museum.


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