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COPEPODA, Copepods (subclass)
Key to the genera and species of the Philippine copepods.
104 a. First antenna long, about as long as body,
with more than 17 segments.
With one broodsack (broodsack bilobed in
Pseudodiaptomus!).
CALONOIDA orde..................................105
104 b. First antenna short, with 6-17 segments,
never reaching the abdomen.
With two broodsacks.
CYCLOPOIDA (order)..............................108
105 a. Inner branch (endopodit) of first,
second, third and fourth leg with 3 segments.
Caudal branches more than two times
longer than wide.
PSEUDODIAPTOMIDAE (family)
Pseudodiaptomus.................................116
105 b. Inner branch of first leg with 2 segments,
inner branch of second, third and fourth leg
with 3 segments. Caudal branches less than
two times longer than wide.
DIAPTOMIDAE family).............................106
106 a. Left outer branch of male fifth leg bilobed,
distal lobe circular saw-like.
Tropodiaptomus..................................121
106 b. Left outer branch of male fifth leg
without circular saw-like lobe.....................107
To 107a
