Redescription of Potamonautes walderi (Colosi, 1924) from the lower Congo River basin in Central Africa (Brachyura, Potamoidea, Potamonautidae)

in Crustaceana
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Potamonautes walderi (Colosi, 1924), is redescribed from the lectotype and the male gonopods, abdomen, mouthparts, chelipeds, and sternum are illustrated. Photographs of the lectotype are provided and its distribution and conservation status is discussed. Potamonautes walderi is also compared to the other species of this genus that are found in the Congo River basin in Central Africa.

Redescription of Potamonautes walderi (Colosi, 1924) from the lower Congo River basin in Central Africa (Brachyura, Potamoidea, Potamonautidae)

in Crustaceana

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References

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Figures

  • View in gallery

    Potamonautes walderi (Colosi, 1924). Lectotype, adult male, CW 36 mm, from the Congo River at Kingoyo, D. R. Congo (SMNH 6386), whole animal. A, dorsal view; B, frontal view; C, ventral view. Scale bar: 12 mm (A-C).

  • View in gallery

    Potamonautes walderi (Colosi, 1924). Lectotype, adult male, CW 36 mm, from the Congo River at Kingoyo, D. R. Congo (SMNH 6386). A, right cheliped, frontal view; B, left cheliped, frontal view; C, merus, carpus, fingers of left cheliped, dorsal view; D, merus, carpus and fingers of right cheliped, dorsal view; E, ventral view with abdomen pulled back showing right first gonopod (right), and right second gonopod (left). Scale bar: 10.2 (C-D), 7.8 (A-B), 8.48 mm (E).

  • View in gallery

    Potamonautes walderi (Colosi, 1924). Lectotype, adult male, CW 36 mm, from the Congo River at Kingoyo, D. R. Congo (SMNH 6386). A, carapace, frontal view; B, dorsal view; C, anterior thoracic sternum; D, pleon (abdomen). Scale bar: 8.4 mm (A-D).

  • View in gallery

    Potamonautes walderi (Colosi, 1924). Lectotype, adult male, CW 36 mm, from the Congo River at Kingoyo, D. R. Congo (SMNH 6386). A, third maxilliped frontal view; B, mandible frontal view; C, mandibular palp superior view; D, G1 ventral view; E, superior view of terminal article; F, G1 dorsal view; G, G2 ventral view. Scale bar: 8.4 mm (A), 2.1 mm (B-G).

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    Map of the Congo Republic and D. R. Congo in Central Africa showing the known localities of Potamonautes walderi (Colosi, 1924) (black circles).

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