taxonID	type	description	language	source
03BB87C010323929403EFAC8FEF5F9F6.taxon	description	Figures 1 (a, b), 4 (a), 5 (a, b), 6 (a, b), 7 (a, d) and 8 (a, d, g ))	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	materials_examined	Comparative material examined Cameroon. Potamonemus mambilorum Cumberlidge and Clark, 1992: Adamawa Region, holotype, adult ♂, CW 34.5, CL 25.5, CH 12.5, FW 11.5 mm, Somié, Bankim, Mayo-Banyo, Tikow Plain, 760 m asl, near border with Nigeria (6.50 ° N, 11.50 ° E), coll. D. Zeitlyn, 1991 (NHM reg. 1991: 183); several specimens, Elak-Oku, North-West region, coll. unknown, 20 October 2013. Potamonemus sachsi Cumberlidge, 1993: Bamenda, holotype, adult ♂, CW 33.1, CL 22.6, CH 10.6, FW 10.6 mm (ZIM K- 30395). Paratypes, 3 ♂♂, CWs 32.8, 29.0, 26.0 mm, 4 ♀♀, CWs 34.4, 33.8, 33.4, 14.9 mm. Nigeria. Cross River State, adult ♂, CW 32, CL 22, CH 10.5, FW 9.5 mm, south-east of Nigeria, Obudu Plateau, Oshie Ridge, Sankwala Mountain range, 1 km north of Obudu Cattle Ranch (6.383209 ° N, 9.386741 ° E), coll. N. Cumberlidge, 8 April 1983 (NMU 8. IV. 1983 A).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	diagnosis	Diagnosis Third maxilliped exopod either lacking, or with extremely reduced flagellum (Figure 8 (d )). Lower margin of cheliped merus with large pointed tooth distally (Figure 5 (a, b )). G 1 TA long (TA / SS 0.86), directed outward, broad at base then narrowing sharply, distal one-third slender, tapering to pointed tip; lateral margin of G 1 TA, SS with long bristles; longitudinal groove not visible when viewed from dorsal aspect (Figure 7 (a, d )); G 1 SS basal margin very wide, 5 × that of distal margin (Figure 7 (a, d )); G 2 TA distinctly short (TA / SS 0.23) with pointed tip (Figure 8 (a )).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	distribution	Distribution Cameroon. Buea gen. nov. is endemic to the rainforest zone of south-western Cameroon (Cumberlidge 1993, 1999).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	type_taxon	Type species Potamonemus asylos Cumberlidge, 1993 by present designation and by monotypy.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	etymology	Etymology The genus is named for the town of Buea in south-western Cameroon which is close to the type locality. The name is used as a noun in apposition and the gender is masculine. Species included Buea asylos (Cumberlidge, 1993) comb. nov.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010323929403EFAC8FEF5F9F6.taxon	discussion	Remarks This new potamonautine genus is established to accommodate B. asylos comb. nov. which was previously considered to be a species of Potamonemus. Work by Daniels et al. (2015, fig. 2) prompted more detailed comparative studies involving the types of all three species currently assigned to Potamonemus. The morphological differences between the mandible and gonopod characters of B. asylos comb. nov. and the other two species of Potamonemus support the establishment of a new genus to accommodate P. asylos Cumberlidge, 1993. The new genus is compared to the holotype of P. mambilorum from Cameroon (NHM reg. 1991: 183), the holotype of P. sachsi, from Bamenda, Cameroon (CW 33.1 mm, ZIM K- 30395), and other specimens of P. sachsi (NMU 8. IV. 1983 A) from Nigeria (Cumberlidge 1993). The main morphological differences that characterise Buea gen. nov. and distinguish it from the two species of Potamonemus are the following: the G 1 TA of Buea gen. nov. is elongate (TA / SS 0.86) and is longer than that of Potamonemus (TA / SS 0.63); the first fourfifths of the G 1 TA are straight and distinctly widened, with long bristle-like setae on the lateral margin (Figure 7 (a, d )) (vs slim along its entire length, and lacking bristle-like setae on the lateral margin in Potamonemus, Figure 7 (b, c, e, f )); although short, the G 2 TA of Buea gen. nov. (TA / SS 0.23, Figure 8 (a )), is still longer than those of the two species of Potamonemus (TA / SS 0.13, Figure 8 (b, c )); and the G 2 TA of Buea gen. nov. has a pointed tip (Figure 8 (a )) (vs G 2 TA of the two species of Potamonemus which has a blunt tip, Figure 8 (b, c )). Buea gen. nov. can be distinguished from the other genera of continental African potamonautines by differences in the carapace, G 1, G 2, third maxillipeds, and mandibles (Cumberlidge 1993, 1994, 1999) (Figures 1 – 3, 7 (a – f) and 8 (a – i )). Each of these genera has been recovered as a well-supported lineage in the most recent molecular studies of this fauna (Daniels et al. 2006, fig. 1, 2015, fig. 2; Mvogo Ndongo et al. 2017 c, fig. 1). Six of these genera are found in West and Central Africa (Sudanonautesı Liberonautesı Potamonautesı Potamonemusı Louisea and Erimetopus), and four have representatives in Cameroon (Table 1) but only Louisea is endemic to that country (Cumberlidge 1999; Mvogo Ndongo et al. 2017 a, 2017 c, 2018). Buea gen. nov. is superficially similar to Louisea, a genus of small freshwater crabs found in south-western Cameroon that also has a third maxilliped exopod lacking a flagellum. These two genera can be distinguished, however, by the length of the G 1 TA: that of Buea gen. nov. is extremely long (TA / SS 0.86, Figure 7 (a, d) (vs significantly shorter (TA / SS 0.31) in Louisea, Mvogo Ndongo et al. 2017 a, fig. 3 a, b; Mvogo Ndongo 2018, fig. 5 a, b). In addition, the G 1 TA of Buea gen. nov. curves outward (Figure 7 (a, d )) (vs S-shaped in Louisea, Mvogo Ndongo et al. 2017 a, fig. 3 a, b; Mvogo Ndongo 2018, fig. 5 a, b), has a broadened mid-section that tapers to a pointed tip (Figure 7 (a, d )) (vs tube-like, ending in a blunt, rounded tip in Louisea, Mvogo Ndongo et al. 2017 a, fig. 3 A, B; Mvogo Ndongo 2018, fig. 5 a, b); the G 1 TA of Buea gen. nov. has long bristle-like setae on its lateral margin (Figure 7 (a, d )) (vs smooth, and lacking bristle-like setae in Louisea, Mvogo Ndongo et al. 2017 a, fig. 3 A, B; Mvogo Ndongo 2018, fig. 5 a, b); and the G 2 TA is relatively short (TA / SS 0.23, Figure 8 (a )) (vs longer, TA / SS 0.64, in Louisea (Mvogo Ndongo et al. 2017 a, fig. 3 C; Mvogo Ndongo 2018, fig. 5 c). Buea gen. nov. is superficially similar to two species of Sudanonautes (S. orthostylis Bott, 1955 and S. tiko Mvogo Ndongo, Schubart, von Rintelen, Tamesse, and Cumberlidge, 2017 b) from south-western Cameroon, but can be distinguished from these two species as follows. The anterolateral margin of the carapace of Buea gen. nov. lacks a distinct intermediate tooth between the exorbital and epibranchial teeth (Figure 1 (a, b )) (vs a distinct intermediate tooth in S. orthostylis and S. tiko, Cumberlidge 1999, fig. 31 C), and the third maxilliped exopod lacks a flagellum (Figure 8 (d )) (vs an exopod with a long flagellum in S. orthostylis and S. tiko, Cumberlidge 1999, fig. 34 H; Mvogo Ndongo et al. 2017 b, fig. 2 d). In addition, both of these genera have a shortened G 2 TA, whereas that of Buea gen. nov. is distinctly longer (TA / SS 0.23, Figure 8 (a )) vs S. orthostylis and S. tiko (both with TA / SS 0.04) (Cumberlidge 1999, fig. 53 V; Mvogo Ndongo et al. 2017 b, fig. 3 c). The absence of a flagellum on the exopod of the third maxilliped can be used to distinguish Buea gen. nov. from Potamonautesı Erimetopus and Platythelphusa, and from most species of Liberonautes (except for L. grandbassa Cumberlidge, 1999, and L. lugbe, Cumberlidge 1999) because these taxa possess a long flagellum on the exopod (Cumberlidge 1999; Cumberlidge et al. 1999; Cumberlidge and Reed 2004; Marijnissen et al. 2004). In addition, the short G 2 TA of Buea gen. nov. (TA / SS 0.23; Figure 8 (a )) can be used to distinguish it from Potamonautesı Erimetopusı Platythelphusa and Liberonautes because all possess a G 2 with a long flagellumlike TA (TA / SS 0.33 – 0.75, Cumberlidge 1999, 2017; Cumberlidge et al. 1999; Marijnissen et al. 2004). The updated freshwater crab species list for Cameroon now comprises 15 species in five genera assigned to the Potamonautinae: Louisea balssi (Bott, 1959), L. edeaensis (Bott, 1969), Potamonautes reidi Cumberlidge, 1999, Potamonemus mambilorum Cumberlidge and Clark, 1992, P. sachsi Cumberlidge, 1993, Buea asylos (Cumberlidge, 1993) comb. nov., Sudanonautes aubryi (H. Milne Edwards 1853), S. africanus (A. Milne-Edwards 1869), S. chavanesii (A. Milne- Edwards 1886), S. faradjensis (Rathbun, 1921), S. floweri (De Man, 1901), S. granulatus (Balss, 1929), S. monodi (Balss, 1929), S. orthostylis Bott, 1955, and S. tiko Mvogo Ndongo et al. 2017 b (Cumberlidge and Clark 1992; Cumberlidge 1993, 1994, 1999; Mvogo Ndongo et al. 2017 a, 2017 b, 2017 c, 2018).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	description	(Figures 1 (a, b), 4 (a), 5 (a, b, g), 6 (a, b), 7 (a, d) and 8 (a, d, g )) Type species. Potamonemus asylos Cumberlidge, 1993, by present designation.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	materials_examined	Material examined Type material. Cameroon: Buea asylos (Cumberlidge, 1993) comb. nov. adult ♂ holotype, CW 27.6, CL 18.3, CH 9.0, FW 7.5 mm, between Buea (4.153484 ° N, 9.299551 ° E) and Kumba (4.638727 ° N, 9.441354 ° E), South-West Region, coll. R. H. L. Disney, 1969 (NHM 1994.587 donation from NMU 1969 / 1991). Paratypes, 3 ♀♀, CWs 25.4, 23.7, 18.7 mm, 3 ♂♂, CWs 22.3, 20.1, 19.8 mm, between Buea (4.153484 ° N, 9.299551 ° E) and Kumba (4.638727 ° N, 9.441354 ° E), South-West Region, coll. R. H. L. Disney, 1969 (NHM 1994.588 – 591), DNA voucher specimens (Daniels et al. 2015, table 1). Adult ♂, CW 22.4, CL 15.8, CH 6.8, FW 6.9 mm, Buea (4.153484 ° N, 9.299551 ° E) Kumba area, South-West Region, coll. R. H. L. Disney, 1969 (NMU TRW 1969.22), specimen photographed here. Other material examined. Adult ♀, CW 23.2, CL 17.2, CH 7.4, FW 7.4 mm, Buea (4.153484 ° N, 9.299551 ° E), Kumba area, South-West Region, coll. R. H. L. Disney, 29 April 1969 (NMU TRW 1969.13 a). Adult ♂, CW 19.8, CL 14.5, CH 6.8, FW 6.9 mm, 3 subadult ♂♂, CWs 16.4, 15.6, 14.9 mm, subadult ♀, CW 15.3 mm, 9 juv., Okia Stream, Kumba area, South-West Region, coll. R. H. L. Disney, 9 May 1969 (NMU TRW 1969.27). Adult ♂, CW 19.0 mm, 3 subadult ♂♂, CWs 18.4, 15.8, 12.6 mm, subadult ♀, CW 17.9 mm, 2 juv., Okia Stream, Kumba area, South-West Region, coll. R. H. L. Disney, 27 March 1969 (NMU TRW 1969.29). Limbé (formerly Victoria), South-West Region, 2 ♂♂, CWs 21.3, 20.1 mm, coll. E. Fickenday, 6 November 1912, ‘ edible land crabs ’ (ZIM K- 3607).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	diagnosis	Diagnosis Exorbital tooth absent where anterolateral margin meets lateral orbital margin (Figures 1 (a, b) and 4 (a )); major cheliped dactylus broad, flattened, not arched (Figures 1 (b) and 5 (a, b )); lower margin of cheliped merus with four large jagged pointed teeth (Figures 1 (b) and 6 (a, b )); anterior corners of carapace surface smooth; carapace grooves shallow to absent (Figures 1 (a) and 4 (a); Cumberlidge 1993, figs. 2 a, 3 a).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	description	Description Same as for the genus and for P. asylos comb. nov. (see Cumberlidge 1993, 1999).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	distribution	Distribution Buea asylos comb. nov. is endemic to the rainforest zone of south-western Cameroon between the towns of Kumba, Buea and Limbé (Cumberlidge 1993, 1999).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	materials_examined	Type locality Between Buea and Kumba, south-western Cameroon.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	biology_ecology	Ecology Buea asylos comb. nov. is restricted to the humid lowland and montane rainforests of south-western Cameroon in the area near Mount Cameroon (4095 m asl) that has an annual average rainfall of more than 5000 mm (Mvogo Ndongo et al. 2017 a, 2017 b).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C010313927438DF8AEFC39F930.taxon	discussion	Remarks Significant morphological differences between B. asylos comb. nov., P. mambilorum and P. sachsi were found in the G 1, G 2 and mandible (Figures 7 (a – f) and 8 (a – c, g – i )) that are used here to define Buea gen. nov. Other noteworthy characters of B. asylos comb. nov. include those of the chelipeds and carapace of that set it apart from the two species of Potamonemus: the cheliped merus lower medial margin has large jagged teeth (Figure 6 (a, b )) (vs small granules in Potamonemus, Figure 6 (c, f )), the cheliped carpus medial margin of B. asylos comb. nov. has a small but distinct pointed proximal tooth (Figure 5 (g )) (vs a small granule-sized tooth in Potamonemus, Figure 5 (h, i )), the cheliped dactylus is distinctly broadened (Figures 1 (b) and 5 (a )) (vs distinctly slim or arched in Potamonemus, Figure 5 (c, e )), and the carapace proportions of B. asylos comb. nov. are wider (CW / FW 3.35, vs 3.08 – 3.12), longer (CW / FW 2.32, vs 2.22 – 2.25), and higher (CW / FW 1.10, vs 0.96 – 1.07) than in Potamonemus. Conservation status The extinction risk status of B. asylos comb. nov. was assessed in 2008 using the International Union for the Conservation of Nature (IUCN) Red List protocols (Cumberlidge 2008 a) as Data Deficient (DD) in view of the lack of information on its extent of occurrence (EOO), ecological requirements, population size, population trends and long-term threats (Cumberlidge 1993, 2011 a, 2011 b; Cumberlidge et al. 2009; IUCN 2012). The three locations available in this study give a recalculated EOO of 142 km 2, and an area of occupancy (AOO) of 12 km 2, using GeoCAT (http: // geocat. kew. org; Bachman et al. 2011), but these are still probably underestimates given the paucity of the locality data (but if taken alone would point to a Red List threatened category). The extinction risk status of P. mambilorum (seven locations, EOO 43,291 km 2; Cumberlidge 2008 b) and P. sachsi (four locations, EOO 24,219 km 2; Cumberlidge 2008 c) were assessed in 2008 (Cumberlidge 2008 b, 2008 c) as Least Concern (LC) and Vulnerable (VU), respectively, (Cumberlidge 1993, 2011 a, 2011 b; Cumberlidge et al. 2009; IUCN 2012). Although the recalculations of the EOO and the AOO for these three species do not in themselves warrant a reassessment of their extinction risk, there is reason to believe that the threat status of these species may have intensified since the last assessment. For example, recent field work in the wetland ecosystems of the South-West and Littoral regions of Cameroon by the second author indicates that these habitats are being impacted by deforestation and by intensive agricultural practices that are severely altering the flow patterns of small streams and impacting the aquatic biodiversity (Mvogo Ndongo et al. 2017 a, 2017 b, 2017 c, 2018). Awareness of these current threats to the habitats of B. asylos comb. nov., P. mambilorum and P. sachsi means that each of these taxa is likely to be reassigned to a more threatened category once new IUCN Red List extinction risk assessments have been carried out. There is a need for further field research specifically aimed at gathering the data needed for an extinction risk assessment of these littleknown endemic species from this understudied biodiversity hotspot.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C0103F393F438EFCC7FB0CFD7A.taxon	description	(Figures 2 (a, b), 3 (a, b), 4 (b, c), 5 (c – f), (h, i), 6 (c – f), 7 (b, c, e, f) and 8 (b, c, e, f, h, i ))	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C0103F393F438EFCC7FB0CFD7A.taxon	description	Mandibular palp 2 - segmented, lacking flap at junction between segments (Figure 8 (h, i )); G 1 TA slim, curving outward, long (TA / SS 0.63), lacking setae, tapering to pointed tip (Figure 7 (b, c, e, f )); G 2 TA distinctly shortened (TA / SS 0.13, Figure 8 (b, c )). Description See Cumberlidge and Clark (1992) and Cumberlidge (1999). The carapace proportions of all known specimens of P. mambilorum have been recalculated in the present study (CW / FW 3.08, CW / FW 2.22, and CW / FW 0.96), and the relative lengths of the TAs of G 1 and G 2 of P. mambilorum (TA / SS of 0.63 and 0.13 respectively) are presented here for the first time.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C0103F393F438EFCC7FB0CFD7A.taxon	type_taxon	Type species Potamonemus mambilorum Cumberlidge and Clark, 1992, by original designation.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C0103F393F438EFCC7FB0CFD7A.taxon	materials_examined	Type locality Somié, Cameroon. Species included Potamonemus mambilorum and P. sachsi Cumberlidge, 1993.	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
03BB87C0103F393F438EFCC7FB0CFD7A.taxon	distribution	Distribution Potamonemus is endemic to the rainforest zone of south-western Cameroon and southeastern Nigeria (Cumberlidge 1993, 1999).	en	Cumberlidge, Neil, Mvogo Ndongo, Pierre A., Clark, Paul F., Daniels, Savel R. (2019): A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993 ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae. Journal of Natural History 53 (11): 659-676, DOI: 10.1080/00222933.2019.1583390
