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FIG. 5 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 5. — Left third maxilliped of Madagascan freshwater crabs, frontal view (J, K based on Ng & Takeda 1994); A, Hydrothelphusa agilis A. Milne-Edwards, 1872; B, H. madagascariensis (A. Milne-Edwards, 1872); C, H. bombetokensis (Rathbun, 1904); D, H. goudoti (H. Milne Edwards, 1853) n. comb.; E, Malagasya antongilensis (Rathbun, 1905) n. comb.; F, M. goodmani (Cumberlidge, Boyko & Harvey, 2002) n. comb.; G, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002; H, Madagapotamon humberti Bott, 1965; I, Skelosophusa gollhardi (Bott, 1965); J, S. prolixa Ng & Takeda, 1994; K, S. eumeces Ng & Takeda, 1994; L, Boreas uglowi n. gen., n. sp. Scale bar: A-D, 5.0 mm; E-L, 3.5 mm.

FIG. 11 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 11. — Summaries of the known distribution of the Madagascan freshwater crabs; A, Hydrothelphusa agilis A. Milne-Edwards, 1872; B, H. madagascariensis (A. Milne-Edwards, 1872); C, H. bombetokensis (Rathbun, 1904); D, H. goudoti (H. Milne Edwards, 1853); E, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002; F, Malagasya antongilensis (Rathbun, 1905) n. comb.; G, M. goodmani (Cumberlidge, Boyko & Harvey, 2002) n. comb.; H, Madagapotamon humberti Bott, 1965; I, Skelosophusa gollhardi (Bott, 1965); J, S. prolixa Ng & Takeda, 1994; K, S. eumeces Ng & Takeda, 1994; L, Boreas uglowi n. gen., n. sp.

FIG. 2 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 2. — Dorsal view of the carapace of adult males of Madagascan freshwater crabs (A-C based on Ng & Takeda 1994); A, Skeleosophusa gollhardi (Bott, 1965), holotype (MNHN B-5165); B, S. prolixa Ng & Takeda, 1994, holotype, (MRSN); C, S. eumeces Ng & Takeda, 1994, holotype, (MRSN); D, Boreas uglowi n. gen., n. sp., holotype (MNHN B- 11292); E, Madagapotamon humberti Bott, 1965; F, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002, holotype, (AMNH 17833). Scale bar: A, 7.2 mm; B, 7.1 mm; C, 6.5 mm; D, 9 mm; E, 9.4 mm; F, 6 mm.

FIG. 10 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 10. — Right first gonopod (dorsal and ventral views) of adult males of Madagascan freshwater crabs; A, B, Boreas uglowi n. gen., n. sp.; C, D, Malagasya antongilensis (Rathbun, 1905) n. comb.; E, F, Skeleosophusa gollhardi (Bott, 1965); G, H, Madagapotamon humberti Bott, 1965; I, J, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002. Scale bar: 4.0 mm.

FIG. 8 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 8. — Last walking leg (pereiopod 5) of adult males of Madagascan freshwater crabs (H based on Ng & Takeda 1994); A, Hydrothelphusa agilis A. Milne-Edwards, 1872; B, H. madagascariensis (A. Milne-Edwards, 1872); C, H. bombetokensis (Rathbun, 1904); D, H. goudoti (H. Milne Edwards, 1853) n. comb.; E, Boreas uglowi n. gen., n. sp.; F, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002; G, Madagapotamon humberti Bott, 1965; H, Skelosophusa prolixa Ng & Takeda, 1994; I, Malagasya antongilensis (Rathbun, 1905) n. comb.; J, M. goodmani (Cumberlidge, Boyko & Harvey, 2002) n. comb. Scale bar: A-D, 5.0 mm; E-L, 2.6 mm.

FIG. 7 in The freshwater crabs of Madagascar (Crustacea, Decapoda, Potamoidea)

FIG. 7. — Superior and inferior views of the merus of the cheliped (pereiopod 1) of adult males of Madagascan freshwater crabs; A, B, Hydrothelphusa agilis A. Milne-Edwards, 1872; C, D, H. madagascariensis (A. Milne-Edwards, 1872); E, F, H. bombetokensis (Rathbun, 1904); G, H, H. goudoti (H. Milne Edwards, 1853) n. comb.; I, J, Malagasya antongilensis (Rathbun, 1905) n. comb.; K, L, Madagapotamon humberti Bott, 1965; M, N, Skelosophusa gollhardi (Bott, 1965); O, P, Marojejy longimerus Cumberlidge, Boyko & Harvey, 2002; Q, R, Boreas uglowi n. gen., n. sp. Scale bar: A-H, 5.0 mm; I-T, 3.0 mm.

Fig. 5 in Gurumon gurumayum, a new genus and new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Arunachal Pradesh, northeastern India

Fig. 5. Map showing India, China and distribution of the species of Gurumon gen. nov., Abormon Mitra, Pati & Ng, 2021, Pararanguna Dai & Chen, 1985, and Potamiscus Alcock, 1909.

Fig. 3 in Gurumon gurumayum, a new genus and new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Arunachal Pradesh, northeastern India

Fig. 3. Gurumon gurumayum gen. et sp. nov., holotype (ZSI-WRC C.2170), ♂ (CW 10.9 × CL 8.8 mm). A. Cephalothorax, dorsal view. B. Third maxilliped (left). C. Thoracic sternites (s1–s7), pleonal somites 3–6 and telson. D. Pleon and telson. E. G1 (left), dorsal view. F. G2 (left). Scale bars: A, C–D = 2 mm; B, E–F = 1 mm.

Fig. 6 in Gurumon gurumayum, a new genus and new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Arunachal Pradesh, northeastern India

Fig. 6. Gurumon gurumayum gen. et sp. nov., paratype (ZSI-WRC C.2171), ♂ (CW 13.3 × CL 9.9 mm), colour in life.

Fig. 2 in Gurumon gurumayum, a new genus and new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Arunachal Pradesh, northeastern India

Fig. 2. Gurumon gurumayum gen. et sp. nov. A–D. Paratype (ZSI-WRC C.2171), ♂ (CW 13.3 × CL 9.9 mm). E–G. Paratype (ZSI-WRC C.2171), ♀ (CW 12.7 × CL 10.0 mm). C. Paratype (ZSI-WRC C.2172), ♀ (CW 12.6 × CL 9.5 mm). A, E, H. Entire animal, dorsal view. B. Mandibular palp, dorsal view. C. Thoracic sternites with G1 and G2 in situ. D. Posterior thoracic sternites (s5–s8). F. Pleonal somites 3–6 and telson. G. Thoracic sternites showing vulvae. Scale bars: A, E, H = 5 mm; C–D, F–G = 2 mm; B = 0.5 mm.

Fig. 4 in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 4. Phricotelphusa aedes (Kemp, 1923). A, F, holotype female (25.8 × 18.6 mm) (ZSI C 602/1), Peninsular Thailand; B–D, male (17.5 × 13.2 mm) (ZRC 2012.0215), Peninsular Thailand; E, G, female (19.5 × 15.3 mm) (ZRC 2012.0215), Peninsular Thailand. A, B, overall dorsal view; C, left third maxilliped; D, E, dorsal view of carapace; F, frontal view of cephalothorax; G, female sternopleonal cavity and vulvae.

Fig. 3. Phricotelphusa sukreei, new species. A–F in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 3. Phricotelphusa sukreei, new species. A–F, holotype male (26.7 × 20.2 mm) (ZRC 2021.0815), Peninsular Thailand; G, H, paratype female (27.1 × 20.3 mm) (ZRC 2021.0824), Peninsular Thailand. A, frontal view of cephalothorax; B, male anterior thoracic sternum and pleon; C, male sternopleonal cavity; D, left third maxilliped; E, male pleon; F, right fourth ambulatory leg; G, female pleon; H, female sternopleonal cavity and vulvae.

Fig. 6 in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 6. Phricotelphusa aedes (Kemp, 1923), observed in Nakhon Si Thammarat Province, Peninsular Thailand. A, male (22.7 × 17.4 mm) (PSUZC-CRU-0102), Khao Ram Rome, Ron Phibun District, live colouration; B–D, crab observed in Khao Wang Hip, Thung Song District. B, forest habitat; C, tree-hole at habitat where specimen was collected, about 2 metres above the ground; D, foraging crab (not collected), after crawling out of hole.

Fig. 2. Phricotelphusa sukreei, new species. A, B, D in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 2. Phricotelphusa sukreei, new species. A, B, D, holotype male (26.7 × 20.2 mm) (ZRC 2021.0815), Peninsular Thailand; C, paratype female (27.1 × 20.3 mm) (ZRC 2021.0824), Peninsular Thailand. A, overall dorsal view; B, C, dorsal view of carapace; D, chelae.

Fig. 5. Gonopods. A–F in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 5. Gonopods. A–F, Phricotelphusa sukreei, new species, holotype male (26.7 × 20.2 mm) (ZRC 2021.0815), Peninsular Thailand; G, H, P. aedes (Kemp, 1923). A, F, left G1 (ventral view); B, G, distal part of left G1 (ventral view); C, H, distal part of left G1 (dorsal view); D, left G2; E, distal part of left G2.

Fig. 1 in Phricotelphusa sukreei, a new species of arboreal freshwater crab (Crustacea: Brachyura: Gecarcinucidae) from Thailand

Fig. 1. Phricotelphusa sukreei, new species, forest in high mountains, Srinagarindra District, Phatthalung Province, Peninsular Thailand. A, habitat at type locality; B, C, paratype male (22.7 × 17.4 mm) (PSUFTM-0001), in natural habitat; D–F, paratype male (23.1 × 18.4 mm) (PSUZC-CRU-0146), live colouration. D, overall dorsal view; E, frontal view of cephalothorax; F, ventral view of cephalothorax, chelae, and ambulatory legs.

Fig. 11. A–D in A new genus and three new species of freshwater crab (Crustacea: Brachyura: Potamidae) from central and northern Vietnam

Fig. 11. A–D, Indochinamon lanae, new species, holotype male (39.0 × 30.0 mm) (ZRC 2022.0049), Quang Ninh Province, Vietnam; E–H, I. signum, new species, holotype male (36.9 × 29.3 mm) (ZRC 2022.0051), Quang Ninh Province, Vietnam. A, E, left G1 (ventral view); B, F, terminal segment of left G1 (ventral view); C, G, terminal segment of left G1 (dorsal view); D, H, left G2. Scales: A, D, E, H = 1.0 mm; B, C, F, G = 0.5 mm.

Fig. 10. A–E, K in A new genus and three new species of freshwater crab (Crustacea: Brachyura: Potamidae) from central and northern Vietnam

Fig. 10. A–E, K, Indochinamon lanae, new species, holotype male (39.0 × 30.0 mm) (ZRC 2022.0049), Quang Ninh Province, Vietnam; F–J, L, I. signum, new species, holotype male (36.9 × 29.3 mm) (ZRC 2022.0051), Quang Ninh Province, Vietnam. A, F, left G1 (ventral view); B, G, left G1 (dorsal view); C, H, terminal segment of left G1 (ventral view); D, I, terminal segment of left G1 (dorsal view); E, J, left G2; K, L, male sternopleonal cavity showing gonopods in situ.

Fig. 8 in A new genus and three new species of freshwater crab (Crustacea: Brachyura: Potamidae) from central and northern Vietnam

Fig. 8. Indochinamon lanae, new species, holotype male (39.0 × 30.0 mm) (ZRC 2022.0049), Quang Ninh Province, Vietnam. A, overall dorsal view; B, dorsal view of carapace; C, frontal view of cephalothorax; D, ventral view of cephalothorax and pleon; E, left third maxilliped; F, male pleon (telson damaged); G, outer view of chelae.

Fig. 9 in A new genus and three new species of freshwater crab (Crustacea: Brachyura: Potamidae) from central and northern Vietnam

Fig. 9. Indochinamon signum, new species, holotype male (36.9 × 29.3 mm) (ZRC 2022.0051), Quang Ninh Province, Vietnam. A, overall dorsal view; B, dorsal view of carapace; C, frontal view of cephalothorax; D, left third maxilliped; E, male pleon; F, ventral view of cephalothorax and pleon; G, chelae.