Abstract
Two new species of potamonautid freshwater crabs are described from the Imatong Mountains and Mount Moroto in northern Uganda, East Africa, and a third highland species, Potamonautes amalerensis (Rathbun, 1935) stat. rev. from Mount Kadam is re-diagnosed based on examination of the holotype. All three species are endemic to a different mountain range and their collection localities indicate a distinct preference for higher altitudes. Diagnoses, illustrations and distribution maps are provided for these taxa, and they are compared to similar species from the region. The conservation status of all three species is discussed.
Highlights
Freshwater crabs from the highland regions of northern Uganda collected by Trefor R
The two new species were collected from streams and rivers draining the slopes of mountain ranges in the Acholi and Karamajo Provinces of northern Uganda during a survey aimed at a better understanding of the transmission of river blindness (Onchocerciasis) to humans (Barnley & Prentice 1958; McMahon et al 1958; Hynes et al 1961; Williams et al 1964; Williams 1968, 1991; European Journal of Taxonomy 182: 1–18 (2016)
Abbreviations a = abdominal somite a7/a6 = sutures between abdominal somites CW = carapace width measured at widest point CL = carapace length measured along median line from anterior to posterior margin CH = carapace height measured at maximum height of cephalothorax e = thoracic episternite FW = front width measured along anterior frontal margin between orbits G1 = first gonopod G2 = second gonopod IUCN = International Union for the Conservation of Nature MCZ = Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA NHM = Natural History Museum, London, UK NMU = Northern Michigan University, Marquette, MI, USA
Summary
Freshwater crabs from the highland regions of northern Uganda collected by Trefor R.
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