Question 1
Question 2
Question 3
Question 4
Question 15
Question 17
Question 18
Question 21
Question 22

23a. Inner surface of caudal ramus bare; ramus more than 4.5 times as long as wide; lateral seta inserted in middle third of ramus, large species (>1.5mm).

Acanthocyclops capillatus

23b. Inner surface of caudal ramus with small tufts of hair; ramus less than 4.5 times as long as wide; lateral seta inserted in distal third of ramus.

Acanthocyclops venustoides