Achatinella byronii

Achatinella byronii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Achatinellidae. This species is endemic to Oahu, in the Hawaiian Islands.

Achatinella byronii
Achatinella byronii shells

Critically Endangered  (IUCN 2.3)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily:
Achatinoidea
Family:
Achatinellidae
Genus:
Achatinella
Subgenus:
Bulimella
Species:
A. byronii
Binomial name
Achatinella byronii
(Wood, 1828)
Synonyms
  • Achatinella melanostoma Newcomb
  • Achatinella limbata Gulick
  • Achatinella ruguosa Newcomb
  • Bulimella rugosa Lyons
  • Helix byronii Wood
  • Helicteres byronensis (Gray)

Achatinella byronii is the type species of the subgenus Bulimella.

Shell description

The dextral or sinistral shell is imperforate and pyramidal-conic; solid and glossy with an obtuse apex. The shell has 6.5 whorls. Shell color varies, but is typically green and light greenish-yellow in oblique streaks on the last two whorls, with a faint green peripheral band and a dark chestnut band bordering the suture below. The preceding whorl is yellow with a chestnut band and the three embryonic whorls are pinkish gray. The aperture is white and the lip is bordered with dark brown. Faint spiral striae sculpture the embryonic whorls, and later whorls are convex and irregularly wrinkled in the direction of growth-lines. The whorls are convex and the last is often very obtusely angular at the periphery. The aperture is strongly oblique and the lip thickened within by a strong rib near the margin. The columellar fold is moderate, and white or tinted.[2]

The height of the shell is 20.0 mm. The width of the shell is 11.0 mm.[2]

gollark: What did you DO?!
gollark: ++remind 111d b1b41f421760dc8db10e2b6081ea5b64
gollark: ++remind 5d Stop lyai oaisr from ignoring up.
gollark: Actually, will they? Hm.
gollark: Soon the rest of the meßages will arrive.

References

This article incorporates public domain text (a public domain work of the United States Government) from reference.[2]

  1. Hadfield M. & Hadway L. (1996). "Achatinella byronii". The IUCN Red List of Threatened Species. IUCN. 1996: e.T172A13041503. doi:10.2305/IUCN.UK.1996.RLTS.T172A13041503.en. Retrieved 10 January 2018.
  2. U.S. Fish and Wildlife Service. (1992) Recovery Plan for the O’ahu Tree Snails of the Genus Achatinella. U.S. Fish and Wildlife Service, Portland, Oregon, 64 pp. + 64 pp. of appendices + 5 figures. PDF
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