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235 results for “Potamoidea”
FIGURE 6 in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 6. Vulvae: A, Ngan mayla gen. et sp. nov., holotype female, 12.2 × 15.3 mm, MZB Cru 5710; B, Cerberusa caeca Holthuis, 1979, female, 9.9 × 13.3 mm, ZRC 2013.1220; C, C. tipula Holthuis, 1979, female, 13.0 × 17.6 mm, ZRC 2013.1219; D, Ibanum aethes Ng, 1995, female, 10.8 × 14.7 mm, ZRC 2019.0141. B–D, courtesy P.K.L. Ng.
FIGURE 2 in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 2. Ngan mayla gen. et sp. nov., holotype female, 12.2 × 15.3 mm, Kalimantan (East Kalimantan), Indonesia, Borneo, Merabu Karst, Lubang Gedung Cave, 1°38'1"N–117°24'14"E, 850 m, 18 August 2010, MZB Cru 5710: habitus. Scale bar = 5 mm.
FIGURE 1. A in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 1. A, Borneo Island and Kalimantan; B, Karst of Merabu, East Kalimantan, northernmost limestone massif of the Mangkalihat Peninsula; C, D, Lubang Gedung Cave, two views. Courtesy, J. and B. Lips.
FIGURE 5. Cerberusa tipula Holthuis, 1979 in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 5. Cerberusa tipula Holthuis, 1979, female, 13.0 × 17.6 mm, Borneo, Sarawak, Stone Horse Cave, ZRC 2013.1219: A, habitus; B, frontal view; C, left cheliped; D, carapace and chelipeds; E, ventral view. Courtesy P.K.L. Ng.
FIGURE 4. Cerberusa caeca Holthuis, 1979 in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 4. Cerberusa caeca Holthuis, 1979, female, 9.9 × 13.3 mm, Borneo, Sarawak, Stone Horse Cave, ZRC 2013.1220: A, habitus; B, D, frontal views; C, left cheliped; E, ventral view. Courtesy, P.K.L. Ng.
FIGURE 9 in Ngan mayla gen. et sp. nov, a new blind potamid cave crab from Borneo, Kalimantan (Crustacea: Decapoda: Brachyura: Potamoidea, Potamidae), and three other unidentified cave crabs from the same region
FIGURE 9. Ocular regression: A, Ngan mayla gen. et sp. nov., (Potamidae), holotype female, 12.2 × 15.3 mm, MZB Cru 5710; B, Cerberusa caeca Holthuis, 1979 (Potamidae), male, 12.5 × 17.0 mm, RMNH.CRUS.D.31904; C, C. tipula Holthuis, 1979 (Potamidae), male 12.5 × 16.0 mm, female 16.0 × 21.8 mm, RMNH.CRUS.D.33959; D, Holthuisana alba Holthuis, 1980 (Gecarcinucidae), paratype female, 22.0 × 27.0 mm, RMNH.CRUS.D.33302; E, Sendleria genuitei Guinot, 1987 (Gecarcinucidae), holotype male, 22.0 × 29.0 mm, MNHN-IU-2014-11301 (= MNHN-B17968); F, Typhlopseudothelphusa juberthiei Delamare Deboutteville, 1976 (Pseudothelphusidae Ortmann, 1893), female, 21.0 × 32.0 mm, MNHN-IU-2014- 23194 (= MNHN-B18870); G, Trogloplax joliveti Guinot, 1986 (Trogloplacinae Guinot, 1986), paratype male, 16.0 × 21.0 mm, MNHN-IU-2014-10458 (= MNHN-B12794); H, Austinograea alayseae Guinot, 1990 (Bythograeoidea Williams, 1980), allotype female, 21.0 × 32.0 mm, MNHN-IU-2008-11306 (= MNHN-B24022). Scale bar: A = 1 mm.
FIGURE 45 in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURE 45. Summary of the distribution of Erimetopus brazzae (A. MilneEdwards, 1886) (large grey circles) and E. vandenbrandeni (Balss, 1936) (small black circle). Locality data are from the present study and from the literature (Rathbun 1905, 1921; Balss 1936; Bott 1955).
FIGURES 42–44. Erimetopus vandenbrandeni n in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 42–44. Erimetopus vandenbrandeni n. comb. (Balss, 1936), photographs of subadult male lectotype (cw 16.5 mm), MRAC 1273. 42, first gonopod ventral view; 43, first gonopod dorsal view; 44, first gonopod terminal article, dorsal view.
FIGURE 17–21 in Notes on the taxonomy of Potamonautes obesus (A Milne-Edwards, 1868) and Potamonautes calcaratus (Gordon, 1929) (Brachyura: Potamoidea: Potamonautidae) from eastern and southern Africa
FIGURE 17–21. Potamonautes obesus (A. MilneEdwards, 1868), right (major) cheliped of males of different body sizes. 17, juvenile male, (cw 18 mm); 18, subadult male, (cw 24.8 mm); 19, adult male, form I (cw 38.9 mm); 20, f adult male, form I (cw 44 mm); 21, adult male, form II (cw 49.1 mm). Scale bar = 3 cm.
FIGURES 1–8 in Notes on the taxonomy of Potamonautes obesus (A Milne-Edwards, 1868) and Potamonautes calcaratus (Gordon, 1929) (Brachyura: Potamoidea: Potamonautidae) from eastern and southern Africa
FIGURES 1–8. Potamonautes obesus (A. MilneEdwards, 1868), adult male, form II (cw 49.1 mm, NMU TRW 1968.06) from Mlali, near Morogoro, Uluguru Mountains, Tanzania. 1, carapace and eyes, dorsal view; 2, cephalothorax, carapace and eyes, frontal view; 3, right cheliped, frontal view; 4, left cheliped, frontal view; 5, carpus and merus of right cheliped, dorsal view; 6, merus of right cheliped, inferior view; 7, left third maxilliped; 8, sternum and abdomen. Scale = 3 cm, 1–6, 8; 6 cm, 7.
FIGURES 36–38. Erimetopus vandenbrandeni n in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 36–38. Erimetopus vandenbrandeni n. comb. (Balss, 1936), photographs of adult female paratype (cw 29.5 mm), MRAC 252. 36, frontal view; 37, dorsal view; 38, underside, ventral view.
FIGURE 28 in Notes on the taxonomy of Potamonautes obesus (A Milne-Edwards, 1868) and Potamonautes calcaratus (Gordon, 1929) (Brachyura: Potamoidea: Potamonautidae) from eastern and southern Africa
FIGURE 28. Summary of the distribution of Potamonautes obesus (A. MilneEdwards, 1868) (black triangles) and Potamonautes calcaratus (Gordon, 1929) (black circles). Data are taken from the present study and from the literature (Barnard 1950; Pretzmann 1977).
FIGURES 1–11 in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 1–11. Erimetopus brazzae (A. MilneEdwards, 1886), adult female lectotype, cw 23.5 mm, MNHNB5069. 1, carapace and eyes, dorsal view; 2, cephalothorax, carapace and eyes, frontal view; 3, carpus. propodus, and dactylus of right cheliped, frontal view; 4, carpus. propodus, and dactylus of left cheliped, frontal view; 5, carpus of cheliped, superior view; 6, merus of right cheliped, dorsal view; 7, merus of right cheliped, inferior view; 8, left third maxilliped; 9, abdomen; 10, right pereopod 3; 11, right pereopod 5. Scale = 5 mm (1–2, 5, 9–11); 10 mm (3, 6–8).
FIGURES 22–29 in Notes on the taxonomy of Potamonautes obesus (A Milne-Edwards, 1868) and Potamonautes calcaratus (Gordon, 1929) (Brachyura: Potamoidea: Potamonautidae) from eastern and southern Africa
FIGURES 22–29. Potamonautes obesus (A. MilneEdwards, 1868), adult male, form II (cw 49.1 mm, NMU TRW 1968.06) from Mlali, near Morogoro, Uluguru Mountains, Tanzania. 22, left gonopod 1, dorsal aspect; 23, left gonopod 1, terminal article, superior aspect; 24, left gonopod 1, ventral aspect. Potamonautes calcaratus (Gordon, 1929), lectotype, adult male, form I (cw 35.8 mm, NHML 1929.3.5.9–13). 25, left gonopod 1, dorsal aspect; 26, left gonopod 1, terminal article, superior aspect; 27, left gonopod 1, ventral aspect.
FIGURES 15–17 in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 15–17. Erimetopus brazzae (A. MilneEdwards, 1886), photographs of adult female lectotype of Erimetopus spinosus Rathbun, 1894 cw 33.5 mm, USNM 18066. 15, frontal view; 16, dorsal view; 17, underside, ventral view.
FIGURES 9–16 in Notes on the taxonomy of Potamonautes obesus (A Milne-Edwards, 1868) and Potamonautes calcaratus (Gordon, 1929) (Brachyura: Potamoidea: Potamonautidae) from eastern and southern Africa
FIGURES 9–16. Potamonautes calcaratus (Gordon, 1929), lectotype, adult male, form I (cw 35.8 mm, NHML 1929.3.5.9–13). 9, carapace and eyes, dorsal view; 10, cephalothorax, carapace and eyes, frontal view; 11, right cheliped, frontal view; 12, left third maxilliped; 13, carpus and merus of right cheliped, dorsal view; 14, merus of right cheliped, inferior view; 15, sternum and abdomen; 16, right fifth pereiopod (modified from Gordon 1929). Scale bar = 3 cm, 9–11, 13–16; 6 cm, 12.
FIGURES 39–41. Erimetopus vandenbrandeni n in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 39–41. Erimetopus vandenbrandeni n. comb. (Balss, 1936), photographs of subadult male lectotype (cw 16.5 mm), MRAC 1273. 39, frontal view; 40, dorsal view; 41, underside, ventral view.
FIGURES 12–14 in Erimetopus vandenbrandeni (Balss, 1936) n. comb., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa
FIGURES 12–14. Erimetopus brazzae (A. MilneEdwards, 1886), photographs of adult female lectotype of Thelphusa brazzae A. MilneEdwards, 1886, cw 23.5 mm, MNHNB5069. 12, frontal view; 13, dorsal view; 14, underside, ventral view.
Figure 7. G2 in Albertine Rift Valley endemics: three new species of freshwater crabs (Brachyura: Potamoidea: Potamonautidae) from Uganda, the Democratic Republic of the Congo, and Rwanda
Figure 7. G2 ventral view (a–c). (a) Potamonautes bwindi sp. nov., holotype, adult male, CW 20.2 mm, Bwindi Impenetrable Forest, Uganda, total length G2 4.68 mm (terminal article 1.6 mm, subterminal segment 3.08 mm, NHMUK 2018. 1). (b) Potamonautes kivu sp. nov., holotype, adult male, CW 24.9 mm, Gisenyi, Lake Kivu, Rwanda (NHMUK reg. 2018. 5), total length G2 6.52 mm (terminal article 2.2 mm, subterminal segment 4.32 mm (c) Potamonautes rwenzori, adult male, CW 24.3 mm, Maya Moto, Rwenzori Mountains, Democratic Republic of the Congo, total length G2 7.1 mm (terminal article 2.5 mm, subterminal segment 4.6 mm; NHMUK 2018. 6).
Figure 5 in Albertine Rift Valley endemics: three new species of freshwater crabs (Brachyura: Potamoidea: Potamonautidae) from Uganda, the Democratic Republic of the Congo, and Rwanda
Figure 5. Frontal view of left and right chelipeds. (a) Potamonautes bwindi sp. nov., holotype, adult male, CW 20.2 mm, Bwindi Impenetrable Forest, Uganda (NHMUK 2018. 1). (b) Potamonautes kivu sp. nov., holotype, adult male, CW 24.9 mm, Gisenyi, Lake Kivu, Rwanda (NHMUK reg. 2018. 5); (c) Potamonautes rwenzori sp. nov., holotype, adult male, CW 24.3 mm, Maya Moto, Rwenzori Mountains, Democratic Republic of the Congo (NHMUK 2018. 6). Dorsal view of right cheliped carpus. (d) Potamonautes bwindi sp. nov., holotype, adult male, CW 20.2 mm, Bwindi Impenetrable Forest, Uganda (NHMUK 2018. 1). (e) Potamonautes kivu sp. nov., holotype, adult male, CW 24.9 mm, Gisenyi, Lake Kivu, Rwanda (NHMUK reg. 2018. 5). (f) Potamonautes rwenzori sp. nov., holotype, adult male, CW 24.3 mm, Maya Moto, Rwenzori Mountains, Democratic Republic of the Congo (NHMUK 2018. 6). Scale bars: a = 5.48 mm; b = 6.7 mm; c = 4.4 mm. Size of d–f scaled for comparison. Photograph c by Phillip Crabb, Natural History Museum, UK.
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