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Phrantela conica Ponder & Clark, 1993

Diagnostic features

Differs from other species in shell having a protoconch of about two whorls; radula narrower; male genital system with straight pallial vas deferens and penial duct; female genital system with proximal coiled oviduct with two bends and extends slightly posterior to bursa copulatrix.

Classification

Phrantela conica Ponder & Clark, 1993

Class Gastropoda

Subclass Caenogastropoda

Order Littorinimorpha 

Superfamily Truncatelloidea

Family Tateidae

Genus Phrantela  Iredale, 1943

Original name: Phrantela conica Ponder & Clark, 1993 in Ponder, W. F., Clark, G. A., Miller, A. C and Toluzzi, A. (1993).  On a major radiation of freshwater snails in Tasmania and eastern Victoria - a preliminary overview of the Beddomeia group (Mollusca: Gastropoda: Hydrobiidae). Invertebrate Taxonomy, 7: 501-750.

Type locality: Tributary of Little Henty River, at Zeehan Road, Tasmania (41°52'35" S, 145'22'34" E).

Biology and ecology

Occurs sympatrically with Beddomeia zeehanensis, a species of Austropyrgus, and another (unnamed) species of Phrantela, living under stones and on roots and aquatic vegetation, especially in sheltered parts of the large stream. Egg capsules unknown but probably like those of another species of Phrantela; small, with single embryo, and covered in coarse sand grains. Development direct.

Distribution

Tributary of Little Henty River, at Zeehan Road, western Tasmania.

Notes

This species is on the Tasmanian Threatened species list of Invertebrate Animals as Rare (small population at risk).

Further reading

Ponder, W. F., Clark, G. A., Miller, A. C. & Toluzzi, A. (1993). On a major radiation of freshwater snails in Tasmania and eastern Victoria: a preliminary overview of the Beddomeia group (Mollusca: Gastropoda: Hydrobiidae). Invertebrate Taxonomy 7: 501-750.