Giesbrecht, 1888
Females: Posterior corners of Pr asymmetrical, prolonged on right into lobe extending nearly to CR. P5 vestigial, lamelliform, one-segmented. More characters can be accessed by backtracking the key:
Page 735: Copepoda: Genus Scolecithrix females
Males: Right P5 Exp terminal segment divided into 2 subequal branches. More characters can be accessed by backtracking the key:
Page 1154: Copepoda: Genus Scolecithrix males