FIGURE 9. Acroperus angustatus Sars, 1863 in Discrimination between two sibling species of Acroperus (Baird, 1843) from the Palearctic (Cladocera: Anomopoda: Chydoridae)

FIGURE 9. Acroperus angustatus Sars, 1863 from Germany, Berlin Area, Petersdorfersee Lake. A–E—parthenogenetic female: A—antennule, B—antenna, C–D—outer and inner part of thoracic limb I; E—juvenile male of instar I, inner part of thoracic limb I; F–G—juvenile male of instar II: F—antennule, G—inner part of thoracic limb I; H–I—adult male: H—antenna, I—thoracic limb I (endites not shown). Scale bar 0.05 mm