Geletin, 1976
Subeucalanus longiceps
Subeucalanus subtenuis
Subeucalanus crassus
Subeucalanus pileatus
Subeucalanus monachus
Males of Subeucalanus are poorly known morphologically, and their morphology is also highly variable. The following males cannot be separated in the identification key, but their sizes and figure references are as follows:
Subeucalanus pileatus total length 1.80-2.25 mm (Fig. Co.7.63.1)
Subeucalanus monachus total length 2.2 mm (Fig. Co.7.62.1)
Subeucalanus longiceps total length about 3.2 mm (Fig. Co.7.61.1)
Subeucalanus crassus total length 2.9-3.1 mm (Fig. Co.7.60.1)