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Question 15
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16a.
Medial surface
of caudal ramus haired.
Hyaline membrane
on last segment of antennule strongly toothed.
Macrocyclops fuscus
16b.
Medial surface
of caudal ramus bare.
Hyaline membrane
on last segment of antennule smooth or finely serrated.
Macrocyclops albidus