Dr. Éva Murai szerk.: Miscellanea Zoologica Hungarica 4. 1987 (Budapest, 1987)
Stifter, P.: Ilyocryptus verrucosus Daday, 1905: a junior synonym of I. spinifer Herrick, 1882 (Crustacea: Cladocera)
Figs 6-7 Ilyocryptus spinifer Herrick, 1882, sexual female, Paraguay, Daday* s collection (D III50; II/P-404) (6= ephippium, 7= details of the ephippium) Fig. 8 Ilyocryptus spinifer Herrick, 1882, sexual female, Trinidad (South(, Waterloo Road, 23.2.1979, leg. T. Gopee, part of the ephippium (a= chitinized part of carapace. Scale equals 0.05 mm)
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