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248 results for “spermatheca”
FIG. 17 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 17. — Sphaerodromia lamellata Crosnier, 1994, ovigerous female 36.4 × 36.2 mm, New Caledonia, Norfolk Ridge (MNHN- B 28389). See Guinot & Tavares (2003: fig. 21C as S. ducoussoi McLay, 1991) for the peculiar location of the spermathecae; A, axial skeleton, with connections by fusion; B, detailed view of posterior part. Abbreviations: br1, anterior transverse bridge; br2, posterior transverse bridge; cx3, P3 coxae; i.p., intertagmal phragma. Scale bar: A, 1 cm.
FIG. 2 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 2. — The three main internal parts of a typical dromiacean spermatheca, after the removal of the skeleton, median view, Dromia marmorea Forest, 1974 (Dromiidae, Dromiinae), female 57 × 72 mm, Azores (MNHN-B 21900). Abbreviations: a, communication with exterior by spermathecal aperture; b, bulb; c, chamber; t, spermathecal tube. Scale bar: 0.5 cm.
FIG. 26 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 26. — Raninoides bouvieri (Capart, 1951) (Raninoidinae), female approximately 17 mm width, Senegambia (MNHN-B 16179); A, thoracic sternum; B, axial skeleton. Abbreviations: a.c.2, arthrodial cavity of P2; cx1, cx3, P1, P3 coxae; l.m., median line; s, approximate location of the paired spermathecae; 1-3, thoracic sternites 1-3; 4-6, thoracic sternites 4-6. Scale bars: 5 mm.
FIG. 9 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 9. — [Dromia] dormia (Linnaeus, 1763), female 88 × 105.8 mm, New Caledonia (MNHN-B 26438); A, anterior part of thoracic sternum (see Fig. 8A), showing terminal part of sutures 7/8 forming two pits; B, detailed view of pits; C, schematic section at level of the pits. Abbreviations: cx1, P1 coxa; e4, episternite 4; l, weakly calcified lateral parts of the pits; p, pit; r, ridge between the two pits; t, location of spermathecal tube; 4, sternite 4; 7/8, thoracic sternal suture 7/8. Scale bars: 5 mm.
FIG. 20 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 20. — Poupinia hirsuta Guinot, 1991, female 54 × 41 mm, allotype, French Polynesia (MNHN-B 24346), thoracic sternum. Abbreviations: cmxp1-mxp3, articular condyles of mxp1-mxp3; cu, cupule; cx1-cx4, coxae of P1-P4; g, female gonopore; s, spermathecal membranous part; p, prominence on each side of suture 6/7; s.p., inflated supra-condylar area of the coxa; 2-8, thoracic sternites 2-8; 3/4-7/8, sternal sutures 3/4 to 7/8. Scale bar: 1 cm.
FIG. 3 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 3. — Homolodromia kai Guinot, 1993, female 12.4 × 8.3 mm, Indonesia, Kai Islands (MNHN-B 22704); A, thoracic sternum; B, axial skeleton, with spermathecal bulb visible but short spermathecal tube not discernible; C, detail of A, left posterior part; D, detail of B, left posterior part. Abbreviations: a, spermathecal aperture at extremity of sternal suture 7/8; b, bulb; i, connections by interfingering; i.p., intertagmal phragma; 4-8, sternites 4-8; 7/8, thoracic sternal suture 7/8. Scale bars: A, B, 4 mm; C, D, 2 mm.
FIG. 15 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 15. — Sternodromia spinirostris (Miers, 1881); A, female 40 × 41 mm, Gulf of Guinea (MNHN-B 22052), thoracic sternum showing sperm plug around slits of the spermathecae; B, female 34 × 37.2 mm, Gulf of Guinea (MNHN), detailed view of anterior sternal plate. Abbreviations: a, spermathecal aperture; cx1, cx5, P1, P5 coxae; e5, episternite 5; g, female gonopore; sl, slit; s.p., sperm plug; t, tubercle; 4-8, sternites 4-8; 5/6-7/8, thoracic sternal sutures 5/6 to 7/8. Scale bar: A, 2.5 mm.
FIG. 6 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 6. — Details of the spermatheca of Dromia marmorea Forest, 1974 (Dromiidae, Dromiinae), female 57 × 72 mm, Azores (MNHN- B 21900); A, posterior part of axial skeleton in median view to show spermatheca in situ; B, details of foldings at level of the spermathecal bulb; C, lateral view, skeletal parts removed; D, vertical view of spermathecal chamber, cut to show sperm inside. Abbreviations: a, communication of the spermatheca with exterior; b, bulb; c, chamber, uneven surface of inner wall; e5, episternite 5; en 6/7, endopleurite 6/7; is 6/7, interosternite 6/7; t, spermathecal tube. Scale bars: A, C, 1 cm.
FIG. 19 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 19. — Moloha majora (Kubo, 1936), ovigerous female 43.8 × 38.6 mm, Japan, Sagami Bay (MNHN-B 24798), thoracic sternum (median junction of the two symmetrical parts of sternite 8 not visible). Abbreviations: cx1-cx5, coxae of P1-P5; e6, episternites 6; g, female gonopore; m7, poorly calcified part belonging to sternite 7; m8, membranous part of inclined sternite 8; p, denticulate process of lateral part of suture 6/7; t7, thinly calcified anteromedian part of sternite 7; 4-8, thoracic sternites 4-8; 4/5-7/8, sternal sutures 4/5 to 7/8. Scale bar: 1 cm.
FIG. 5 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 5. — Thoracic sternum in two species of Dromia Weber, 1795 (Dromiidae, Dromiinae); A, D. personata (Linnaeus, 1758), female 47 × 58 mm, France, Island of Yeu (MNHN); B, D. marmorea Forest, 1974, female paratype 57 × 73 mm, near Dakar (MNHN) (Courtesy of J. Forest). Abbreviations: a, spermathecal aperture at extremity of sternal suture 7/8; cx1-cx3, P1-P3 coxae; e4, e5, episternites 4, 5; g, female gonopore; r, ring encircling spermathecal aperture; 4-8, sternites 4-8; 6/7-7/8, thoracic sternal sutures 6/7 to 7/8.
FIG. 8 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 8. — [Dromia] dormia (Linnaeus, 1763), female 107 mm carapace length, New Caledonia (MNHN-B 26439); A, thoracic sternum; B, detailed part view of spermatheca, skeletal parts removed. Abbreviations: b, bulb; b.t., basal thickening; c1, soft part of spermathecal chamber; c2, rigid part of spermathecal chamber; cx3, P3 coxa; e4, e5, episternites 4, 5; g, female gonopore; p, pit; r, ridge between the two pits; 4-8, sternites 4-8; 4/5-7/8, thoracic sternal sutures 4/5 to 7/8. Scale bar: A, 1 cm.
FIG. 16 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 16. — Hypoconcha panamensis Smith, 1869, female approximately 30 mm width, Mexico, Cabo San Miguel (MNHN-B 20865); A, thoracic sternum; B, detail of posterior part; C, axial skeleton, not dissected so that spermathecae are not visible. Abbreviations: a, spermathecal aperture; br, transverse bridge; c, crest surrounding spermathecal aperture; cx1, cx3, P1, P3 coxae; e4, e5, episternites 4, 5; g, female gonopore; i.p., intertagmal phragma; m, membranous zone separating the flat anterior sternal part from tilted last sternites; 4, 8, sternites 4, 8; 7/8, thoracic sternal suture 7/8. Scale bars: A, C, 4 mm.
FIG. 1 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 1. — Modified thoracic sternum and long sutures 7/8 of the female of an unidentified dromiid (probably Lauridromia sp.) (Dromiidae, Dromiinae) (MNHN) (see Tavares 1994: fig. 37C, D); A, external view, with spermathecal aperture at level of P1; B, internal view, most of interosternites 4/5-7/8 removed, showing internally closed tube. Abbreviations: a, aperture of the spermatheca at extremity of sternal suture 7/8; a.c., arthrodial cavity of P3; i4/5-i7/8, interosternites 4/5-7/8; s, location of the spermathecal pocket or chamber; t, spermathecal tube; 4-8, sternites 4-8; 6/7, 7/8, thoracic sternal sutures 6/7, 7/8. (Courtesy of S. Secretan and M. Tavares).
FIG. 14 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 14. — Lauridromia dehaani (Rathbun, 1923), female 52 mm length, Madagascar (MNHN-B 6868), spermatheca in lateral view, skeletal parts removed. Abbreviations: a, location of the spermathecal aperture on sternum; b, bulb; b.t., basal thickening; c, spermathecal chamber; s8, internal surface of sternite 8; t, spermathecal tube. Scale bar: 1 mm.
FIG. 18 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 18. — Homola ranunculus Guinot & Richer de Forges, 1995, female 41.4 × 38.1 mm, New Caledonia (MNHN-B 19869), axial skeleton. Abbreviations: br, transverse bridge; cx3, P3 coxae; i, connections by interfingering; i.p., intertagmal phragma; l.m., median line; s, location of the spermathecal chamber. Scale bar: 1 cm.
FIG. 22 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 22. — Poupinia hirsuta Guinot, 1991, female 54 × 41 mm, allotype, French Polynesia (MNHN-B 24346); A, thoracic axial skeleton, oblique view to show exclusively lateral location of phragmae; B, detailed view to show surface of endopleurites covered by digitations. Abbreviations: d, digitations; e, empty part of the body, without median connections; i.p., intertagmal phragma; P1-P5, pereopods P1-P5. Scale bar: A, 1 cm.
FIG. 29. — A in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 29. — A, Bathypluma forficula Saint Laurent, 1989 (Retroplumidae), female 12 × 14 mm, Makassar Strait, Corindon Expedition (MNHN-B 11229), vulvae at the extremities of sutures 5/6; B, Hexapus? sexpes (Fabricius, 1798) (Hexapodidae), female 10.5 × 18 mm, Persian Gulf (MNHN-B 10209), vulvae just below the extremities of sutures 5/6. Abbreviations: pr, projection from sternite 5 for abdominal maintaining, still present in mature females; v, vulva; 4-7, sternites 4-7; 4/5-6/7, thoracic sternal sutures 4/5 to 6/7. Scale bars: 5 mm.
FIG. 11. — A in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 11. — A, Takedromia cristatipes (Sakai, 1969), ovigerous female 19.8 × 21.6 mm, New Caledonia (MNHN-B 26420), axial skeleton; B, Epigodromia areolata (Ihle, 1913), female 12.2 × 13.3 mm, New Caledonia (MNHN-B 26336), thoracic sternum. Abbreviations: a, spermathecal aperture; br, transverse bridge; cx3, P3 coxa; e4, e5, episternites 4, 5; g, female gonopore; i.p., intertagmal phragma; s, spermathecal chamber; 4, 8, sternites 4, 8; 7/8, thoracic sternal suture 7/8. Scale bars: A, 4 mm; B, 1 mm.
FIG. 28 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 28. — Neocorycodus stimpsoni (Rathbun, 1937) (Cyclodorippidae, Cyclodorippinae), ovigerous female 3.5 × 5 mm, holotype, thoracic sternum, with all sutures extended anteriorly and spermathecal slits at level of P1 coxae (redrawn from Tavares 1994: fig. 22D; 1996: fig. 23D). Abbreviations: b, unpaired bump; cx3, P3 coxa; g, female gonopore; sl, slit; 4-8, sternites 4-8; 4/5-7/8, thoracic sternal sutures 4/5 to 7/8. Notice that the suture 6/7 is perhaps longer and even complete.
FIG. 12 in The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications
FIG. 12. — Frodromia? atypica (Sakai, 1936), ovigerous female 10.6 × 9.9 mm, New Caledonia, McLay det. (MNHN-B 26360); A, thoracic sternum; B, thoracic axial skeleton, with endopleurites cut away at left to expose spermatheca. Abbreviations: a, spermathecal aperture at extremity of sternal suture 7/8; b, bulb; bo, flat bottom of the sterno-abdominal depression; br, transverse bridge; cx1, cx3, P1, P5 coxae; e4, e5, episternites 4, 5; g, female gonopore; i.p., intertagmal phragma; sr, spur on P3 coxa; s8, internal surface of sternite 8; tb, tubular process on P3 coxa; 4, 8, sternites 4, 8; 7/8, thoracic sternal suture 7/8. Scale bars: 1 mm.
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