Stenotrema barbatum
"The Bristled Slitmouth"
Stenotrema barbatum is defined by a comparison with
Stenotrema stenotrenum, described by Clapp.
The upper half of the outer lip is more noticeable than in Stenotrema
stenotrenum.The upper lip of Stenotrema barbatum, is more concave and flat,
with a pronounced tooth just opposite that of the parietal tooth. In
addition, the width of the
mouth in Stenotrema barbatum is double than that of
Stenotrema stenotrenum (Pilsbry,
1940). The embryonic whorls also differ between these
two species. They are polished
and ribbed in Stenotrema barbatum, while in Stenotrema
stenotrenum they are granulated (Pilsbry,
1940). One of the most noticeable features of Stenotrema barbatum
is the widely spaced hairs about 1/2 cm long, which is why it is
commonly called the bristled slitmouth
(Pilsbry, 1940).
For more information on the classification of Stenotrema barbatum click here.
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