Zooplankton of the South Atlantic Ocean
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Zooplankton of the South Atlantic Ocean
Key: Step 1199. Copepoda: Genus Acrocalanus males
Copepoda: Genus Acrocalanus males

P4 Exp3 with about 10-12 teeth on distal part of segment:

Acrocalanus gibber

Acrocalanus gibber

P4 Exp3 with more than 10-12, usually about 15-20 teeth on distal part of segment:

Acrocalanus gracilis

This species is very difficult to distinguish from Acrocalanus longicornis.

Acrocalanus gracilis

P4 Exp3 with more than 10-12, usually about 15-20 teeth on distal part of segment:

Acrocalanus longicornis

This species is very difficult to distinguish from Acrocalanus gracilis.

Acrocalanus longicornis
Decision path