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37 results for “Ptychognathus”
Figure 2 in Description of a new species of brackish-water crab of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from southern Taiwan
Figure 2. Ptychognathus sakaii sp. nov. A–E, G–O: holotype male (CW 6.7 mm, CL 5.5 mm; NCHUZOOL 17047); F, paratype female (CW 5.9 mm, CL 5.2 mm; NCHUZOOL 16503). A, carapace; B, left third maxilliped; C, left carpus of cheliped (dorsal view); D, outer view of male left cheliped; E, inner view of male left cheliped; pleon; F, outer view of female left cheliped; G, left third ambulatory leg; H, left forth ambulatory leg; I, male pleon; J–O, right G1; J, K, dorsal view; L, M, lateral view; N, O, ventral view.
Figure 1 in Description of a new species of brackish-water crab of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from southern Taiwan
Figure 1. Ptychognathus sakaii sp. nov. A, B, E, holotype male (CW 6.7 mm; NCHUZOOL 17047). C, D, F, paratype female (CW 5.9 mm; NCHUZOOL 16503). E, F, color in life.
Figure 3. A in Description of a new species of brackish-water crab of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from southern Taiwan
Figure 3. A, Ptychognathus hachijoensis (male, CW 7.0 mm; NCHUZOOL 15809); B, Ptychognathus insolitus (male, CW 7.5 mm; NCHUZOOL 16047); C, Ptychognathus stimpsoni (paratype male, CW 10.9 mm; NCHUZOOL 16502); D, Ptychognathus takahasii (male, CW 9.3 mm; NCHUZOOL 16507).
FIGURE 4. Ptychognathus insolitus, n in A new species of Ptychognathus Stimpson, 1858 (Crustacea: Decapoda: Brachyura: Varunidae) from the Ryukyu Islands, southwestern Japan
FIGURE 4. Ptychognathus insolitus, n. sp., male holotype, cw 13.9 mm, cl 9.5 mm, CMNHZC 1960 (A–D); Ptychognathus hachijyoensis Sakai, 1955, male, cw 12.7 mm, cl 10.7 mm, CMNH ZC 1471 (E, F). A, left second pereopod, lateral view; B, left third pereopod, lateral view (scattered small pits omitted); C, left fourth pereopod, lateral view (scattered small pits omitted); D, left fifth pereopod, lateral view (scattered small pits omitted); E, carapace and ocular peduncles, dorsal view; F, left fourth pereopod, propodus and dactylus, lateral view (plumose setae illustrated as simplified). Scale bars: 1.0 mm.
FIGURE 1. Ptychognathus insolitus n in A new species of Ptychognathus Stimpson, 1858 (Crustacea: Decapoda: Brachyura: Varunidae) from the Ryukyu Islands, southwestern Japan
FIGURE 1. Ptychognathus insolitus n. sp. Male paratype, cw 9.9 mm, cl 7.1 mm, CMNHZC 1960, dorsal view (left) and ventral view (right).
FIGURE 2. Ptychognathus insolitus n in A new species of Ptychognathus Stimpson, 1858 (Crustacea: Decapoda: Brachyura: Varunidae) from the Ryukyu Islands, southwestern Japan
FIGURE 2. Ptychognathus insolitus n. sp. Male holotype, cw 13.9 mm, cl 9.5 mm, CMNHZC 1960 (A, C–E, G); male paratype, cw 9.9 mm, cl 7.1 mm, CMNHZC 1961 (B); female paratype, cw 11.3 mm, cl 7.8 mm, CMNHZC 1961 (F). A, carapace and ocular peduncles, anterior view (small pits and lateral setae omitted from left side); B, carapace, dorsal view, left; C, anterior part of carapace and left cephalic appendages, frontal view; D, anterior sternum, sixth abdominal somite, and telson, ventral view; E, F, abdomen and telson, posterior view in proximal three abdominal somites, ventral view in distal three abdominal segments and telson; G, left third maxilliped, ventral view. Scale bars: 1.0 mm.
FIGURE 3. Ptychognathus insolitus n in A new species of Ptychognathus Stimpson, 1858 (Crustacea: Decapoda: Brachyura: Varunidae) from the Ryukyu Islands, southwestern Japan
FIGURE 3. Ptychognathus insolitus n. sp. Male holotype, cw 13.9 mm, cl 9.5 mm, CMNHZC 1960 (A–C, E–G); female paratype, cw 11.3 mm, cl 7.8 mm, CMNHZC 1961 (D). A, left cheliped, carpus and chela, dorsal view (plumose setae illustrated simplified); B, same, carpus and chela, outer view (plumose setae illustrated as simplified); C, same, fingers, posterior view; D, same, carpus and chela, outer view; E, left first gonopods, mesial view; F, same, lateral view; G, same, distal part, dorsal view. Scale bars: 1.0 mm.
FIGURE 17 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 17. Ptychognathus aff. similis: A, dorsal view of a specimen from Fatu Hiva Island (Virgin Bay, estuary of Hanavave River, st. MQ16-M, 17–18 January 2012, -10.464033°, -138.666167°, sample accession number LC146); B, ventral view of same specimen; C, front view of same specimen. Photo credits: J. Poupin.
FIGURE 16. Ptychognathus easteranus Rathbun, 1907, MZS Cru 1993 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 16. Ptychognathus easteranus Rathbun, 1907, MZS Cru 1993, Tahiti, reported by Ortmann 1894 as P. intermedius (de Man, 1879): A, frontal view; B, dorsal view. Male syntype (55.2 × 46.9 mm) of Ptychognathus intermedius (de Man, 1879), Moluccas (Indonesia), RMNH.CRUS.D.194: C, dorsal view. Ptychognathus Easteranus Rathbun, 1907, type specimen from Easter Island (Chile), coll. R/V Albatross, shore, 20 December 1904, M 10.8 × 12.6 mm, USNM 32845. Photo credits: M. Meister (A, B), Ng Ngan Kee (C), J. Poupin (D).
FIGURE 14 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 14. Ptychognathus similis sp. nov.: A, carapace; B, epistome, C, left third maxilliped; D, male cheliped; E, female cheliped; F, third pereiopod; G, fifth pereiopod; H, male pleon; I, left first gonopod; J, female pleon. Holotype MNHN-IU-2022- 4125 (A–D, F–I) male; paratype MNHN-IU-2022-4126 (E, J) female, both from Futuna.
FIGURE 13 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 13. Ptychognathus ngankeeae sp. nov.: A, carapace; B, epistome; C, left third maxilliped; D, male cheliped; E, third pereiopod; F, fifth pereiopod; G, male pleon; H, left first gonopod. All from the holotype (MNHN-IU-2019-411).
FIGURE 12 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 12. Ptychognathus barbatus (A. Milne-Edwards, 1868): A, dorsal view of a living specimen from New Caledonia (MNHN-IU-2019-210); B, ventral view of the same; D, typical habitat of the species, Wadjana mouth of waterfall, New Caledonia. Ptychognathus ngankeeae sp. nov.: C, dorsal view of a living specimen from Futuna Island. Photo credits: V. de Mazancourt (A, B, D) and J. Poupin (C).
FIGURE 11 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 11. Ptychognathus barbatus (A. Milne-Edwards, 1873): A, carapace; B, left third maxilliped; C, male cheliped; D, female cheliped; E, third pereiopod; F, fifth pereiopod; G, male pleon; H, female pleon; I, right male first gonopod. MNHN-IU2019-210 (A–C, E–G, I) male from New Caledonia; MNHN-IU-2017-8250 (D, H) female from New Caledonia.
FIGURE 10 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 10. Ptychognathus riedelii (A. Milne-Edwards, 1868): A, dorsal view of a living specimen from Kolombangara Island; B: front view of the same. Photo credits: P. Keith.
FIGURE 15 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 15. Ptychognathus similis sp. nov.: A, B, dorsal view of specimens from Futuna; C, typical habitat of species, Vainifao River, Futuna. Photo credits: J. Poupin (A), P. Keith (B) and A. Dutartre (C).
FIGURE 9 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 9. Ptychognathus riedelii (A. Milne-Edwards, 1868): A, carapace; B, left third maxilliped; C, male cheliped; D, female cheliped; E, third pereiopod; F, fifth pereiopod; G, male pleon; H, female pleon; I, right male first gonopod. MNHNIU-2022-4114 (A–C, E–G) male from Samoa; MNHN-IU-2019-8 (I) male from Samoa; MNHN-IU-2018-2967 (D, H) female from New Britain.
FIGURE 8. Ptychognathus easteranus Rathbun, 1907. A in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 8. Ptychognathus easteranus Rathbun, 1907. A: dorsal view of a specimen from Moorea; front view of a living specimen; C: typical habitat of the species, Papenoo river, Tahiti. Photo credits: J. Poupin, 2009 Moorea Biocode (A), É. Vigneux (B) and V. Mazel (C).
FIGURE 5. Ptychognathus crassimanus Finnegan, 1931 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 5. Ptychognathus crassimanus Finnegan, 1931: A, dorsal view of a living specimen; B, front view of a living specimen; C, ventral view; D, typical habitat of the species, Faakuaa River, Hiva Oa Island. Photo credits: É. Vigneux (A, B), J. Poupin (C) and G. Marquet (D).
FIGURE 4. Ptychognathus crassimanus Finnegan, 1931 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 4. Ptychognathus crassimanus Finnegan, 1931: A, carapace; B, left third maxilliped; C, male cheliped; D, E, female cheliped; F, third pereiopod with inner view of dactylus; G, fifth pereiopod; H, male pleon; I, female pleon; J, male right first gonopod. MNHN-IU-2019-182 (A, B, C, F, G, H) male from Ua Pou Island; MNHN-IU-2019-183 (J) male from Hiva Oa Island; MNHN-IU-2011-9062 (E, D, I) female from Fatu Hiva Island.
FIGURE 3 in Integrative taxonomy study of brackish water crabs of the genus Ptychognathus Stimpson, 1858 (Crustacea: Brachyura: Varunidae) from Polynesia, with description of two new species
FIGURE 3. Phylogenetic tree obtained by Bayesian Inference from the single-locus 16S dataset. Numbers above branches indicate Bayesian posterior probabilities; numbers under branches indicate Maximum Likelihood bootstrap values.
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