Pachydrobiella brevis

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
Genus:	Pachydrobiella; Thiele, 1928
Species:	P. brevis
Binomial name
	Pachydrobiella brevis; (Bavay, 1895)
Synonyms
	Pachydrobia brevis Bavay, 1895

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

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]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o 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.
^ ^a ^b Thiele (1928). Zool. Jahrb., Syst. 55: 379.
^ ^a ^b 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.

[Davis_1979-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o 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.

[Thiele_1928-2] Thiele (1928). Zool. Jahrb., Syst. 55: 379.

[Bavay_1895-3] 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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