FIGURE 5. Acutihumerus patagoniensis. A, male II in Acutihumerus patagoniensis (Sieg, 1986) (Tanaidacea: Kalliapseudidae): supplementary description and remarks on its taxonomic status

FIGURE 5. Acutihumerus patagoniensis. A, male II carapace and first pereonite in dorsal view (MACN-In. 39641c); B, male III pereonites 6–7 and pleonites 1–2 (MACN-In. 39641g); C, male III pleonites 1–5 in lateral view (MACN-In. 39641h); D–F, cephalothoracic hyposphenium of a female with rudimentary oostegites (MACN-In. 39641i), a male II (MACN-In. 39641j), and a male III (MACN-In. 39641k), respectively. Abbreviations: acp, anterior crest projection; ap, acute projection; ph, pleonal hook-like teeth; pcp, posterior crest projection; P, pereonite; pe, penis; Pl, pleonite. Scale bars: A–C: 0.5 mm; D–F: 0.2 mm (D–F, share the same scale).