Deformed L. obtusata.
An individual specimen may have atypical features or be deformed, so it is advisable to examine several specimens. For inspection of penes, eight mature ones give a 99% chance of having both sexes if there is a 50:50 ratio.
The deformity of this specimen commences at a break on an early whorl; its probable cause.
Height 13.9 mm. Kingsbridge Estuary, South Devon, England. September 2016. Leg. S. Taylor.
Full account at: 02 Differentiation L. obtusata/L. fabalis

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