Phallocryptus

Rogers, D. Christopher, 2003, Revision of the thamnocephalid Genus Phallocryptus (Crustacea; Branchiopoda; Anostraca), Zootaxa 257, pp. 1-14 : 11

Key to the known species of Phallocryptus

1 Females: second antennae unsegmented, brood pouch present .................................... 2

1’ Males: second antennae two segmented, brood pouch absent ..................................... 4

2 Brood pouch with a basal dorsal lobe and two lateral lobes ..... Phallocryptus sublettei

2’ Brood pouch without basal lobes ................................................................................. 3

3 Brood pouch sub­cylindrical, projecting to the second abdominal segment................... ..................................................................................................... Phallocryptus spinosa

3’ Brood pouch sub­globular, projecting over the first abdominal segment ....................... ...................................................................................................... Phallocryptus wrighti

4 Frontal appendage present........................................................... Phallocryptus spinosa

4’ Frontal appendage absent............................................................................................. 5

5 Second antennal distal segments curving medially.................... Phallocryptus sublettei

5’ Second antennal distal segments curving posteriorly .................. Phallocryptus wrighti