Yellow-tail

The yellow-tail, goldtail moth or swan moth (Sphrageidus similis) is a moth of the family Erebidae. The species was first described by Johann Kaspar Füssli in 1775, and has commonly been placed within the related genus Euproctis. It is distributed throughout Europe to the Urals, then east across the Palearctic to Siberia and south to India and Sri Lanka.

Yellow-tail
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Erebidae
Genus: Euproctis
Species:
E. similis
Binomial name
Euproctis similis
(Füssli, 1775)
Synonyms
  • Phalaena similis Fuessly, 1775
  • Bombyx auriflua Denis & Schiffermüller, 1775
  • Porthesia nyctea Grum-Grshimailo, 1891
  • Porthesia rebeli Haberhauer, 1902
  • Porthesia similis (Fuessly, 1775)
  • Porthesia similis var. xanthocampa Dyar, 1905
  • Porthesia similis ab. trimaculata Strand, 1913
  • Porthesia similis ab. quadrimaculata Strand, 1913
  • Porthesia similis f. coreaceola Matsumura, 1933
  • Porthesia similis sjöquisti Bryk, 1942
  • Porthesia similis variabilina Bryk, [1949]
  • Euproctis similis (Fuessly, 1775)

This species has a wingspan of 35–45 mm, the female usually noticeably larger than the male. All parts of the adults are pure white, apart from a bright yellow tip to the abdomen (larger in the female) and a small black or brown tornal mark on the forewing of the male.

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