Trinity bristle snail

Monadenia setosa
Conservation status
	; Vulnerable (IUCN 2.3)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Suborder:	Eupulmonata
Infraorder:	Stylommatophora
(unranked):	clade Heterobranchia; clade Euthyneura; clade Panpulmonata; clade Eupulmonata; clade Stylommatophora; informal group Sigmurethra
Superfamily:	Helicoidea
Family:	Monadeniidae
Genus:	Monadenia
Species:	M. setosa
Binomial name
	Monadenia setosa; (Talmadge, 1952)
Synonyms
	Monadenia infumata setosa

The Trinity bristle snail (Monadenia setosa) is a species of medium-sized land snail, a terrestrial pulmonate gastropod mollusc in the family Monadeniidae.

Description

The Trinity bristle snail attains a body length of approximately 2.5 cm. It is brown or chestnut-colored and covered with minuscule, translucent bristles, which give the species its common name.^[2]

Distribution and habitat

This species is endemic to California. This snail is found only in isolated locales along the Trinity River and nearby small creeks. It can only survive in cool, wet, shady riparian zones, and prefers areas with a deciduous understory.^[3]

Ecology

The Trinity bristle snail is dependent on cool, moist conditions, and therefore it is only active at night. It spends warmer parts of the day stuck to shady areas on tree trunks, and in especially warm parts of the summer it may not move for days. When conditions are cool enough it feeds on lichen and the tender parts of green plants. The snail has a lifespan of over ten years, and may not reach full size for nearly that long. It is subject to predation by beetles and possibly rodents.^[3]

Survival threats

The species appears dependent on moist riparian habitats, and likely to respond poorly to clearing of understory growth.^[3] Human encroachment, mining, and damming, have reduced the snail's habitat significantly.^{[citation needed]}

References

^ Template:IUCN
^ "Monadenia infumata setosa". NatureServe Explorer.
^ ^a ^b ^c Roth, B.; Pressley, P. H. (1986). "Observations on the range and natural history of Monadenia setosa (Gastropoda: Pulmonata) in the Klamath Mountains, California, and the taxonomy of some related species" (PDF). Veliger. 29 (2): 169–182.

External links

"Monadenia setosa". Integrated Taxonomic Information System. Retrieved 26 September 2015.

[iucn-1] Template:IUCN

[2] "Monadenia infumata setosa". NatureServe Explorer.

[roth-3] Roth, B.; Pressley, P. H. (1986). "Observations on the range and natural history of Monadenia setosa (Gastropoda: Pulmonata) in the Klamath Mountains, California, and the taxonomy of some related species" (PDF). Veliger. 29 (2): 169–182.

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