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16 August 2019 First Reported Case of Diphallia in Corynorhinus townsendii
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Abstract

We describe the first reported case of diphallia in a bat, Corynorhinus townsendii, captured during fall swarming at a hibernaculum in northern Utah, USA. Upon examination, we determined that one phallus was functional, as evidenced by production of urine, while the secondary phallus appeared to be overgrown with skin. A review of the medical literature relevant to diphallia suggests that this is a case of pseudodiphallia with a bifid shaft. We hypothesize that this morphological deformity likely has a low impact on the survival of this individual but may act as a physical barrier to copulation. To our knowledge, this is the first reported case of diphallia in bats.

© 2019
Nathan W. Fuller, Catherine G. Haase, Kirk A. Silas, Sarah H. Olson, and Liam P. McGuire "First Reported Case of Diphallia in Corynorhinus townsendii," Western North American Naturalist 79(3), 454-457, (16 August 2019). https://doi.org/10.3398/064.079.0313
Received: 20 December 2018; Accepted: 11 April 2019; Published: 16 August 2019
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