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1,558 results for “southern Africa”
Fig. 80 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 80. Capitina calcicola sp. n. (all NMSA): (A–C) holotype, Cape Agulhas (W6265/T2262), diameter 28.0 mm; (D, E) boldly patterned specimen, Bantamsklip (paratype, W5998/T2266), diameter 28.4 mm; (F) elevated specimen, Cape Agulhas (paratype, W3360/T2270), diameter 28.0 mm; (G) Bredasdorp (paratype, BMNH 1937.12.30.1311–13), diameter 29.5 mm (photo courtesy of J. Ablett and P. Hurst); (H, I) weakly patterned specimen, Cape Agulhas (paratype, W3365/T2267), diameter 29.4 mm; (J) typical pattern, subadult specimen, Grootbos Private Nat. Res. (paratype, W5670/T2265), diameter 27.5 mm.
Fig. 83 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 83. Distribution of Afrorhytida and Capitina species in relation to biome type (Mucina & Rutherford 2006). The dashed line represents the approximate boundary between the western and eastern Cape Floristic Region.
Fig. 76 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 76. Capitina calcicola sp. n., spermatophore, straightened length 8.2 mm (paratype, NMSA W5670/ T2265): (A) spermatophore in situ in dissected lower part of free oviduct; (B) two views of extracted spermatophore, scale bar = 3.0 mm. Abbreviations: bd – bursa copulatrix duct, fo – free oviduct wall with longitudinal folds, o – oviduct, obd – opening of bursa copulatrix duct, sh – spermatophore head, st – spermatophore tail, v – vagina, vd – vas deferens.
Fig. 77 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 77. Capitina schaerfiae (Pfeiffer, 1861): (A, B) lectotype of Helix schärfiae Pfeiffer, 1861, here designated (Polish Academy of Sciences 4295), diameter 31 mm (photographs courtesy of Dominika Mierzwa); (C–E) Oubos, Riviersonderendberge (NMSA W5672), diameter 29.7 mm.
Fig. 75 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 75. Distal genitalia of Capitina schaerfiae, Oubos, Riviersonderendberge (NMSA W5672): (A) epiphallus–penis junction with penis dissected to show penis papilla and micropapillate lumen wall (in situ the epiphallus lies beside the penis and is joined to it by a connective tissue web – not shown); (B) epiphallus cut open longitudinally to shown internal pilaster and ridges; (C) female tract with upper part of vagina and swollen free oviduct cut open to show internal structure. Abbreviations: bd – bursa copulatrix duct, ep – epiphallus, epp – epiphallus pilaster, epr – internal epiphallus ridge, fod – free oviduct, obd – opening of bursa copulatrix duct, p – penis, pl – penis lumen with micropapillate lining, pp – penis papilla, pr – penial retractor muscle, v – vagina, vd – vas deferens.
Fig. 72 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 72. Distribution of Afrorhytida trimeni (Melvill & Ponsonby, 1892). Triangles with a white centre indicate localities for specimens used in DNA analyses (Moussalli et al. 2009). Contours at 1000 and 1500 m.
Fig. 71 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 71. Afrorhytida trimeni (Melvill & Ponsonby, 1892), radula: (A–C) Kap River Nat. Res. (NMSA W4206): (A) entire width of radula, scale bar = 0.5 mm; (B) rachidian and inner lateral teeth, scale bar = 150 µm; (C) inner lateral teeth, scale bar = 50 µm; (D) Umtiza, Nat. Res., East London (NMSA W5253), outer lateral base-plates and marginal teeth, scale bar = 100 µm.
Fig. 74 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 74. Capitina calcicola sp. n., reproductive tract (paratype, NMSA W5670/T2265), scale bar = 5.0 mm. Abbreviations: ag – albumen gland, bc – bursa copulatrix, bd – bursa copulatrix duct, ep – epiphallus, fod – free oviduct, gp – genital pore, hd – hermaphrodite duct, oc – oviduct caecum, ot – ovotestis, p – penis, pr – penial retractor muscle, sod – spermoviduct, v – vagina, vd – vas deferens.
Fig. 67 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 67. Afrorhytida burseyae sp. n., radula (holotype, NMSA W5228/T2257): (A) half width of radula, scale bar = 250 µm; (B) rachidian and inner lateral teeth, scale bar = 100 µm; (C) lateromarginal transition zone, scale bar = 100 µm (l – outer lateral; m – inner marginal); (D) marginal teeth [7], scale bar = 50 µm.
Fig. 73 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 73. Capitina species, radula: (A, B) Capitina schaerfiae (Pfeiffer, 1861), Oubos (NMSA W5672), scale bars = 300 µm and 100 µm; (C, D) Capitina calcicola sp. n., Cape Agulhas (paratype, NMSA W3360/T2270), scale bars = 200 µm and 100 µm.
Fig. 82 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 82. Distribution of genera within Natalina s.l.: Capitina (triangles), Afrorhytida (squares), Natalina (circles).
Fig. 69 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 69. Distribution of Afrorhytida burseyae sp. n. Triangles with a white centre indicate localities for specimens used in DNA analyses (Moussalli et al. 2009); contours at 1000 m and 1500 m.
Fig. 65 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 65. Afrorhytida kraussi (Pfeiffer, 1846) (all NMSA): (A–C) A. k. oraria subsp. n., holotype (fresh specimen, V6780/T2361), De Hoop Nat. Res., diameter 22.3 mm; (D) A. k. kraussi, protoconch, Wilderness (V6578); (E) A. k. oraria subsp. n., protoconch, De Hoop Nat. Res. (paratype, W3292/ T2363). Scale bars = 2.0 mm; arrows mark protoconch/teleoconch junction.
Fig. 64 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 64. Afrorhytida kraussi (Pfeiffer, 1846), radula (all NMSA): (A–D) A. k. kraussi: (A–C) Diepwalle, Knysna (W4845): (A) entire width of radula, scale bar = 0.5 mm; (B) rachidian and inner laterals, scale bar = 250 µm; (C) outer lateral base-plates and marginals, scale bar = 200 µm (l – outer lateral; m – inner marginal); (D) Grootvadersbosch (W3351), half-row, scale bar = 0.5 mm; (E, F) A. k. oraria subsp. n., De Hoop (paratype, W3292/T2363); (E) half-row, scale bar = 100 µm; (F) outer lateral base-plates and marginals, scale bar = 100 µm.
Fig. 68 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 68. Afrorhytida burseyae sp. n., spermatophore (paratype, NMSA W5231/T2260): (A) in situ in dissected upper portion of vagina and lower free oviduct, (B) extracted spermatophore, total length 10.5 mm. Abbreviations: bd – bursa copulatrix duct, fo – free oviduct, m – mid-piece of spermatophore, s – spermatophore, sh – spermatophore head, sp – spines on outer surface of mid-piece, st – spermatophore tail, v – vagina.
Fig. 66 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 66. Afrorhytida burseyae sp. n.: (A–C) holotype (NMSA W5228/T2257), diameter 21.1mm; (D) Engcobo, paratype (SAMC 11289), diameter 23.8 mm; (E) Kei Pass, paratype (NMSA W5484/T2347), diameter 21.8 mm.
Fig. 62 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 62. Afrorhytida kraussi kraussi (Pfeiffer, 1846) spermatophore (NMSA W5803): (A) in situ in upper portion of vagina and free oviduct (wall opened); (B) extracted spermatophore, total length 20 mm (straightened). Abbreviations: bd – bursa copulatrix duct, fo – free oviduct, od – oviduct, pr – prostate, s – spermatophore, sh – head of spermatophore, sp – spines on anterior region of spermatophore, st – tail of spermatophore, v – vagina, vd – vas deferens.
Fig. 70 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 70. Afrorhytida trimeni (Melvill & Ponsonby, 1892): (A–C) lectotype of Helix (Aerope) trimeni Melvill & Ponsonby, 1892 (BMNH 1911.8.8.3), diameter 23.8 mm; (D–F) holotype of Natalina arguta Melvill & Ponsonby, 1907 (BMNH 1911.8.8.6), diameter 20.5 mm; (G) low-spired specimen, Hamburg (NMSA W5254), diameter 25.5 mm; (H) deep-whorled specimen, Kap River Nat. Res. (NMSA W4206), diameter 23.9 mm; (I) high-spired specimen, Umtiza Nat. Res. (NMSA W4182), diameter 20.5 mm.
Fig. 61 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 61. Afrorhytida kraussi kraussi (Pfeiffer, 1846): (A–C) holotype of Natalina liliacea Preston, 1912, Knysna Forest (ISNB MT/525059), diameter 20 mm; (D–F) Diepwalle, Knysna Forest (NMSA W4845), diameter 21.7 mm; (G–I) Grootvadersbosch (NMSA W5803), diameter 25.9 mm; (J) Wilderness area (NMSA V6580), diameter 24.1 mm; (K) holotype of Helix sturmiana Pfeiffer, 1853 (BMNH 20080064), diameter 20.8 mm; (L) Formosa Peak Trail, Tsitsikammaberge (NMSA W3212), diameter 24.0 mm; (M) Cloetespas, Herbertsdale area (NMSA W3207), diameter 23.7 mm; (N) Engelseberg summit, Outeniekwaberge (NMSA W3211), diameter 22.8 mm.
Fig. 60 in Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae)
Fig. 60. Afrorhytida knysnaensis (Pfeiffer, 1846), plot of height/diameter measurements, showing differing shell proportions in different populations. The diagonal dashed line corresponds to the line drawn between St Francis Bay and Molteno in the distribution map (Fig. 59).
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