Pachydrobiella brevis

Pachydrobiella brevis is a species of freshwater snail, an aquatic gastropod mollusk in the family Pomatiopsidae.

Pachydrobiella brevis
Drawing of apertural view of the shell of Pachydrobiella brevis
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily:
Rissooidea
Family:
Pomatiopsidae
Subfamily:
Triculinae
Tribe:
Jullieniini[1]
Genus:
Pachydrobiella

Thiele, 1928[2]
Species:
P. brevis
Binomial name
Pachydrobiella brevis
(Bavay, 1895)[3]
Synonyms[1]

Pachydrobia brevis Bavay, 1895

Pachydrobiella brevis is the only species in the genus Pachydrobiella.[1]

Distribution

The distribution of Pachydrobiella brevis includes Khong Island in the Mekong River, southern Laos.[1] The type locality is Khong Island.[1] This species is probably endemic to the Khong Island region.[1]

Drawing of abapertural view of the shell of Pachydrobiella brevis

Description

The shape of the shell is ovate-conic.[1] The shell is thick and smooth.[1] The smooth shell is unique in the tribe Jullieniini.[1] The outer lip is thick with growth lines.[1]

The width of the shell is 2.5 mm.[3] The height of the shell is 2.2–3.6 mm.[1]

Thiele (1928)[2] and Brandt (1970) made a drawing showing smooth teeth in the radula, but Davis (1979) showed multiserrate teeth in the radula.[1]

Ecology

Pachydrobiella brevis lives primarily in freshwater habitats that lack a current or have only a slight current.[1] However this species sometimes or rarely also lives also in places where the current is moderate or strong all the way to whitewater.[1]

This snail probably feeds on algae on stones.[1]

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References
  1. Davis G. M. (1979). "The origin and evolution of the gastropod family Pomatiopsidae, with emphasis on the Mekong river Triculinae". Academy of natural Sciences of Philadelphia, Monograph 20: 1-120. ISBN 978-1-4223-1926-0.
  2. Thiele (1928). Zool. Jahrb., Syst. 55: 379.
  3. Bavay A. (1895). "Coquilles nouvelles, provenant de récoltes de M. L. Levay, dans les rapides de Haut-Mékong, pendant la campagne du Massie, 1893-1894-1895". Journal de Conchyliologie 43: 82-94. Plates 5-6.
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