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FIGURE 2 in A new genus and species of primary freshwater crab and a new species of Artopotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from western Yunnan, China
FIGURE 2. Semicirculara lincangensis gen. & sp. nov., holotype, male, 18.8 ×14.4 mm, NNU 160562. A, dorsal view; B, frontal view of cephalothorax; C, ventral view of pleon.
FIGURE 1 in A new genus and species of primary freshwater crab and a new species of Artopotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from western Yunnan, China
FIGURE 1. Sampling sites for Semicirculara lincangensis gen. & sp. nov. (■) and Artopotamon latopeos sp. nov. (●) in western Yunnan Province, China.
FIGURE 1 in A new species of freshwater crab of the genus Phallangothelphusa Pretzmann, 1965, from the foothills of the Serranía Yariguíes of Colombia (Crustacea: Decapoda: Pseudothelphusidae)
FIGURE 1. Phallangothelphusa tangerina sp. nov., male holotype (cl 16.1 mm, cb 25.8 mm), IAvH-3212. A, habitus, dorsal view; B, frontal view of carapace; C, chela of large cheliped, external view; D, opening of left efferent branchial channel, external view; E, left third maxilliped, external view.
FIGURE 3 in A new species of freshwater crab of the genus Phallangothelphusa Pretzmann, 1965, from the foothills of the Serranía Yariguíes of Colombia (Crustacea: Decapoda: Pseudothelphusidae)
FIGURE 3. Phallangothelphusa tangerina sp. nov., non-type male (cl 14.9 mm, cb 24.9 mm), ICN-MHN-CR 3384, photo of a living specimen.
FIGURE 2 in A new species of freshwater crab of the genus Phallangothelphusa Pretzmann, 1965, from the foothills of the Serranía Yariguíes of Colombia (Crustacea: Decapoda: Pseudothelphusidae)
FIGURE 2. Phallangothelphusa tangerina sp. nov., male holotype, IAvH-3212, left first (A–E) and second (F, G) gonopods. A, left first gonopod, caudal view; B, same, lateral view; C, same, cephalic view; D, same, mesial view; E, apex distal view; F, left second gonopod, caudal view; G, distal part of second gonopod. 1, mesial process; 2, lateral process; 3, meso-cephalic spine; 4, spermatic channel.
FIGURE 1. Strengeriana quindiensis n in A new species of freshwater crab of the genus Strengeriana Pretzmann, 1971, from El Jardín Natural Reserve, Quindío, Colombia (Crustacea: Decapoda: Pseudothelphusidae)
FIGURE 1. Strengeriana quindiensis n. sp., holotype, male (cl 12.7 mm, cw 19.6 mm), ICN-MHN-CR 3392. A, habitus, dorsal view; B, frontal view of carapace; C, chela of large cheliped, external view; D, opening of left efferent branchial channel, external view; E, left third maxilliped, external view.
FIGURE 2. Strengeriana quindiensis n in A new species of freshwater crab of the genus Strengeriana Pretzmann, 1971, from El Jardín Natural Reserve, Quindío, Colombia (Crustacea: Decapoda: Pseudothelphusidae)
FIGURE 2. Strengeriana quindiensis n. sp., holotype, male, ICN-MHN-CR 3392, left first gonopod. A, complete structure, caudal view; B, same, lateral view; C, same, cephalic view; D, same, mesial view; E, apex, distal view. Legend: 1, mesial process; 2, mesial lobe; 3, lateral process; 4, lateral bulge; 5, caudal lobe; 6, cephalic spines; 7, lateral cephalic projection; 7, internal spines of mesial process; 9, distal portion of caudal lobe; 10, spermatic channel.
FIGURE 4 in Description of a new species of freshwater crab of the genus Arcithelphusa Pati & Sudha Devi, 2015 (Decapoda: Brachyura: Gecarcinucidae) from the Western Ghats, Kerala, India
FIGURE 4. Arcithelphusa tumpikkai sp. nov., paratype, male (ZSI-WRC C.1818) (A–C), paratype, female (ZSI-WRC C.1818) (D–F). A, D, dorsal view; B, E, frontal view; C, F, ventral view. Scale bar = 10 mm.
FIGURE 5 in Description of a new species of freshwater crab of the genus Arcithelphusa Pati & Sudha Devi, 2015 (Decapoda: Brachyura: Gecarcinucidae) from the Western Ghats, Kerala, India
FIGURE 5. Live colouration and habitat of Arcithelphusa tumpikkai sp. nov. A, live crab in situ at Makkimala (type locality); B, small boulders (indicated by red arrow) at Makkimala; C, shallow burrow under small and moist boulder at Makkimala; D, burrows (indicated by red arrow) along water channels of rice fields at Varayal.
FIGURE 2 in Description of a new species of freshwater crab of the genus Arcithelphusa Pati & Sudha Devi, 2015 (Decapoda: Brachyura: Gecarcinucidae) from the Western Ghats, Kerala, India
FIGURE 2. Arcithelphusa tumpikkai sp. nov., holotype male (ZSI-WRC C.1816) (A–C); A. cochleariformis, holotype male (ZSI-WRC C.1188) (D–F). A, D, dorsal view; B, E, frontal view; C, F, ventral view. Scale bar = 10 mm.
FIGURE 1 in Description of a new species of freshwater crab of the genus Arcithelphusa Pati & Sudha Devi, 2015 (Decapoda: Brachyura: Gecarcinucidae) from the Western Ghats, Kerala, India
FIGURE 1. Map showing distribution of Arcithelphusa tumpikkai sp. nov. and A. cochleariformis. Collection/observation sites (1–17): 1, Makkimala (type locality); 2, Kambamala; 3, Puthiyidam; 4, Kappikalam; 5, Varayal; 6, Thirunelly; 7, Bavali; 8, 9, Ondayangadi; 10, Pakkom; 11, Mananthavady; 12, Chettapalam; 13, Ellumannam; 14, Panamaram; 15, Padinjarathara; 16, Kambalakkad; 17, Muthanga.
FIGURE 3 in Description of a new species of freshwater crab of the genus Arcithelphusa Pati & Sudha Devi, 2015 (Decapoda: Brachyura: Gecarcinucidae) from the Western Ghats, Kerala, India
FIGURE 3. Arcithelphusa tumpikkai sp. nov., holotype, male (ZSI-WRC C.1816) (A–I), paratype, male (ZSI-WRC C.1818) (J, K), paratype, female (ZSI-WRC C.1818) (L); A. cochleariformis, holotype, male (ZSI-WRC C.1188) (M–P). A, M, posterior margin of carapace; B, N, left third maxilliped; C, anterior thoracic sternites (s1–s4); D, pleon; E, J, dorsal view of left G1; F, ventral view of left G1; G, mesial view of left G1; H, K, left G2; I, ventral view showing sternopleonal cavity with G1 in situ; L, ventral view showing sternopleonal cavity with vulvae; O, dorsal view of right G1; P, right G2. Scale bars = 5 mm (A, M), 2 mm (B–D, I, L, N), 1 mm (E–H, J, K, O, P).
Fig. 2. Aegla brevipalma n in Three New Species Of Aegla (Anomura) Freshwater Crabs From The Upper Uruguay River Hydrographic Basin In Brazil
Fig. 2. Aegla brevipalma n. sp. Bond-Buckup Santos (male holotype, MZUSP 23465, scale: 5 mm: A, dorsal view; B, anterior portion of carapace (lateral view); C, basis-ischium of cheliped (ventral view); D, third and fourth thoracic sternites (ventral view); E, epimeron 2 (lateral view).
Fig. 3. Aegla leachi n in Three New Species Of Aegla (Anomura) Freshwater Crabs From The Upper Uruguay River Hydrographic Basin In Brazil
Fig. 3. Aegla leachi n. sp. Bond-Buckup Buckup (male holotype, MZUSP 23466, scale: 5 mm: A, dorsal view; B, anterior portion of carapace (lateral view); C, basis-ischium of cheliped (ventral view); D, third and fourth thoracic sternites (ventral view); E, epimeron 2 (lateral view).
Fig. 4. Aegla oblata n in Three New Species Of Aegla (Anomura) Freshwater Crabs From The Upper Uruguay River Hydrographic Basin In Brazil
Fig. 4. Aegla oblata n. sp. Bond-Buckup Santos (male holotype, MZUSP 23467, scale: 5 mm: A, dorsal view; B, anterior portion of carapace (lateral view); C, basis-ischium of cheliped (ventral view); D, third and fourth thoracic sternites (ventral view); E, epimeron 2 (lateral view).
Fig. 5 in Three New Species Of Aegla (Anomura) Freshwater Crabs From The Upper Uruguay River Hydrographic Basin In Brazil
Fig. 5. Maximum likelihood tree. Bootstrap proportions (if>50%) are indicated for each clade. Branch lengths are shown proportional to the amount of change along the branches.
Data from: Roads to isolation: similar genomic history patterns in two species of freshwater crabs with contrasting environmental tolerances and range sizes
Freshwater species often show high levels of endemism and risk of extinction owing to their limited dispersal abilities. This is exemplified by the stenotopic freshwater crab, Johora singaporensis which is one of the world's 100 most threatened species, and currently inhabits less than 0.01 km2 of five low order hill streams within the highly urbanized island city‐state of Singapore. We compared populations of J. singaporensis with that of the non‐threatened, widespread, abundant, and eurytopic freshwater crab, Parathelphusa maculata, and found surprisingly high congruence between their population genomic histories. Based on 2,617 and 2,470 genome‐wide SNPs mined via the double‐digest restriction‐associated DNA sequencing method for ~90 individuals of J. singaporensis and P. maculata, respectively, the populations are strongly isolated (FST = 0.146–0.371), have low genetic diversity for both species (also for COI), and show signatures of recent genetic bottlenecks. The most genetically isolated populations for both species are separated from other populations by one of the oldest roads in Singapore. These results suggest that anthropogenic developments may have impacted stream‐dependent species in a uniform manner, regardless of ubiquity, habitat preference, or dispersal modes of the species. While signs of inbreeding were not detected for the critically endangered species, the genetic distinctiveness and low diversity of the populations call for genetic rescue and connecting corridors between the remaining fragments of the natural habitat.
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.
Figure 3 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 3. Potamonautes rwenzori sp. nov., holotype, adult male, CW 24.3 mm, Maya Moto, Rwenzori Mountains, Democratic Republic of the Congo (NHMUK 2018. 6). (a) Whole animal, dorsal view; (b) whole animal, ventral view. Photographs by Phillip Crabb, Natural History Museum, UK.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.