Revision of the thamnocephalid Genus Phallocryptus (Crustacea; Branchiopoda; Anostraca) Author Rogers, D. Christopher text Zootaxa 2003 257 1 14 journal article 10.5281/zenodo.156887 8cc66a63-7b05-4622-8ee1-8db1c5facdd8 1175­5326 156887 Genus Phallocryptus Biraben, 1951 ( Figure 1 a­c) Branchinella Smirnov, 1948 Phallocryptus Biraben, 1951 ; Belk & Brtek, 1995 ; Brtek, 1995 Diagnosis : Fully extended penes short, extending to the base of the second post­genital abdominal segment. Basal portion of penes rigid and may be tuberculate ventrally. Rigid basal portion of penes with a distal­medial patch of recurved spines. Distal eversible portion of penes soft, expanded in the distal third. Eversible portion of penes with medial surface bearing a longitudinal row of papillae like spines, and the ventral surface with a longitudinal ridge bearing large papillae like spines. Dorsal surface of extended penes with a small cluster of spines on the distal fourth. Penal apex a conical projection, directed medially, subtended by three large spines. Brood pouch sub­conic to pyriform, extending to the base of the second or third post­genital segment. Male abdomen spinose ventro­laterally. Male second antennae attached anteriorly on head, partially fused and projecting ventrally. Distal segment of second antennae arcuate. Female second antennae lamellar, with acute apicies, with the basal­medial margins projecting and partially connected. Resting cysts spherical, with shallow subcircular to slit shaped impressions. Phallocryptus wrighti type species. Three species occur in the Americas, Africa, and western Eurasia.