FIGURE 1 in Cladocerans of Alona affinis group (Cladocera: Anomopoda: Chydoridae) from North America

FIGURE 1. Alona ossiani herricki ssp. nov. from Sebago Lake, Cumberland county, Maine, USA. A–B, juvenile females of instar I and II. C–J, adult parthenogenetic female. C, lateral viev. D, ventral margin of valves. E–F, posteroventral corner of valves. G–H, head shields. I, head pores. J, labrum. K, ephippial female. L, adult male. Scale bar: 0.2 mm for A–C, E–F, K–K, 0.1 mm for D and I–J, 0.05 mm for E–F.