FIGURE 1. A 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

• Main Authors: GUINOT, DANIÈLE, TAVARES, MARCOS, CASTRO, PETER
• Format: Still Image
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Inachidae; Oregoniidae; Xenograpsidae; Marcos; Chionoecetes opilio
• Online Access: https://dx.doi.org/10.5281/zenodo.5276391; https://zenodo.org/record/5276391

FIGURE 1. A, Anatomical relationships of penis and gonopods in Brachyura exemplified by Chionoecetes opilio (Fabricius, 1788) (Oregoniidae) (modified from Beninger et al. 1991: fig. 1C; G1 basal setae not figured); B–D, schematic representation of the dispositions of male gonopore, penis, and ejaculatory duct (indicated by dotted line) in Brachyura: B, C, perforation of P5 coxa by the ejaculatory duct: B, coxal gonopore, with penis emerging from P5 coxa (Podotremata and Heterotremata pro parte); C, coxo-sternal condition, with coxal gonopore and penis emerging at level of thoracic sternal suture 7/8 (Heterotremata pro parte); D, E, perforation of thoracic sternum by ejaculatory duct: D, sternal gonopore at the suture 7/8 level; E, sternal gonopore far from suture 7/8, in posteriormost location in relation to sternite 8. a1, abdominal somite 1; cx5, P5 coxa; g, gonopore; G1, first gonopod; G2, second gonopod; p, penis; p5, fifth pereopod; 7, 8, thoracic sternites 7, 8; 7/8, thoracic sternal suture 7/8. Scale bar: 1 mm (A). : Published as part of GUINOT, DANIÈLE, TAVARES, MARCOS & CASTRO, PETER, 2013, 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, pp. 1-414 in Zootaxa 3665 (1) on page 22, DOI: 10.11646/zootaxa.3665.1.1, http://zenodo.org/record/5276390