Cyzicus mexicanus ( Claus, 1872 )

Rogers, D. Christopher, 2020, Spinicaudata Catalogus (Crustacea: Branchiopoda)., Zoological Studies 59 (45), pp. 1-44 : 20

Cyzicus mexicanus ( Claus, 1872)

= Estheria mexicanus Claus, 1872

= Estheria culdwelli Baird, 1862 (fide Simon, 1886) = Estheria dunkeri Baird, 1862 (fide Packard, 1883) = Estheria clarki Packard, 1874 (fide Simon, 1886) = Cyzicus seurati Daday, 1914: 265 (fide Maeda-Martínez et al., 2002)

Comments: Central and northern México, central and eastern USA, and Canada in Alberta and Manitoba ( Packard 1874; Daday 1914; Mattox 1957b; Wolfe 1982; Maeda-Martínez et al. 2002). Redescribed by Daday (1914: 252). Maeda-Martínez et al. (2002) state that C. seurati is a junior synonym. However, Daday (1914) states that the egg is covered in spines similar to that observed in C. jonsei . The types of C. seurati are in the Paris Museum and the eggs should be compared with those of C. mexicanus and C. californicus . Packard’s E. clarki description is not useful, but material was deposited at the Chicago Museum, and thus is no longer extant. This species needs to be compared with C. belfragei , C. gynecia and C. morsei .