FIGURE 27. Vestigial P5 in Significance of the sexual openings and supplementary structures on the phylogeny of brachyuran crabs (Crustacea, Decapoda, Brachyura), with new nomina for higher-ranked podotreme taxa

FIGURE 27. Vestigial P5 coxa, penis, and organisation of posterior portion of cephalothorax in Hexapodidae. A, B, Hexaplax megalops Doflein, 1904, male 13.0 × 19.0 mm, Fiji (MNHN-B29154); C,?Hexapus sexpes (Fabricius, 1798), female 10.6 × 18.0 mm, Persian Gulf (MNHN-B10209): exposed, translucent apodeme prolonging into sclerotised P4 platelet (left). a, apodeme; a.p., apodemal platelet; c, coxo-sternal condyle; cx4, P4 coxa; cx5, vestigial coxa of P5; e7, episternite 7; p, penis; p4, pereopod 4; pl7, pleurite of thoracic somite 7; 7, thoracic sternite 7; 8, reduced thoracic sternite 8; 6/7, thoracic sternal suture 6/7. Scale bar: 5 mm (C).