Euhadra peliomphala

Euhadra peliomphala is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae.

Euhadra peliomphala
Euhadra peliomphala from Yokohama, Kanagawa Prefecture
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Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily:
Helicoidea
Family:
Bradybaenidae
Genus:
Euhadra
Species:
E. peliomphala
Binomial name
Euhadra peliomphala
(Pfeiffer, 1850)

This species is endemic to Japan. The species exhibits exceptional geographical variation in its mitochondrial DNA.[2]

Subspecies

Euhadra peliomphala has 4 subspecies:

  • Euhadra peliomphala kunoensis Kuroda in Masuda & Habe, 1989
  • Euhadra peliomphala nimbosa (Crosse, 1868)
  • Euhadra peliomphala peliomphala (Pfeiffer, 1850)
  • Euhadra peliomphala simodae (Jay, 1856)

Hormonal control

As Euhadra peliomphala matures sexually, it develops a "head-wart" between the optic tentacles. The development of the "head-wart" parallels the development of the snail's reproductive system. The "head-wart" releases the steroid hormone, testosterone, throughout the body before mating.[3]

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References
  1. IUCN 2008. 2008 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 18 November 2008.
  2. Hayashi, M. & S. Chiba. 2000. Intraspecific diversity of mitochondrial DNA in the land snail Euhadra peliomphala (Bradybaenidae). Biological Journal of the Linnean Society 70(3): 391–401. doi:10.1006/bijl.1999.0376
  3. Naokuni Takeda. 1980 Hormonal control of head-wart development in the snail, Euhadra peliomphala. Embryol. exp. Morph. Vol. 60, pp. 57-69.
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