

Potyoelis ooronata boreatis Kenk, 1953 



Synonym: Polyoelis horealis Kenk, 1953. 



20 



bd ode 



Fig. 20 after Kenk (1953). 



Not distinguishable from the nominate subspecies by external features. 

 Up to 20 mm long and 2.5 mm wide. Differs from the subspecies ooronata 

 and brevipenis by the anatomy of the bursal duct which is evenly muscular 

 throughout its length and is not divided into glandular and muscular 

 sections. The penis has a well-developed, conical papilla (in brevipenis 

 the papilla is reduced in size, blunt, containing a short ejaculatory 

 duct). Reproduction sexual and asexual. In springs, cold streams, also 

 in mountain lakes, Alaska, northern Wyoming, Idaho. Principal literature: 

 Kenk (1953). 



27 



