FIGURE 3. Male gnathopod 1 in A phylogeny and classification of the Talitroidea (Amphipoda, Senticaudata) based on interpretation of morphological synapomorphies and homoplasies

FIGURE 3. Male gnathopod 1 propodus anterior margin; 24.1 with 1–2 groups of robust setae (after Morino 2014); 24.2 with 3–4 groups of robust setae (after Marsden & Fenwick 1984); 24.3 with 5–9 groups of robust setae (after Lowry & Myers 2019a); 24. 4 with scattered groups of very short setae (after Bousfield 1982). Male gnathopod 1 propodus 25.1 subrectangular (after Stock & Martin 1988); 25.2 enlarged subrectangular (after Hurley 1957); 25.3 subovoid (after Jo 1988); 25.4 subtriangular with well developed posterodistal lobe (after Marsden & Fenwick, 1984)); 25.5 subrectangular tapering distally (after Shoemaker 1936). Male gnathopod 1 palm 26.1 transverse (White et al. 2013); 26.2 acute or obtuse (Friend 1982); 26.3 absent (after Lowry & Myers 2019a)