• Each caudal ramus with five setae
• Third segment from the end of the right antenna has a curved process, which is usually pointed. The process is shorter than the second segment from the end
• Both terminal processes of the left fifth exopod digitiform and blunt
• Right fifth endopod triangular
• Lateral spine located proximal to middle of segment
• View entire male 5th leg
• Spine on right antennule segment 11 much shorter than segment 13 (1)
• Males are approximately 1.1 mm long

• Calanoid1.mov - a calanoid swimming (886 KB).
• Calanoid2.mov - a calanoid feeding (831 KB).

(1) Smith, K. E., and C. H. Fernando. 1978. A Guide to the Freshwater Calanoid and Cyclopoid Copepod Crustacea of Ontario. University of Waterloo Biological Series No. 18.