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Diversity within the southern Africa Lacustricola and species redescription
Diversity within the southern Africa Lacustricola and species redescription Diversity of the southern Africa Lacustricola Myers, 1924 and redescription of Lacustricola johnstoni (Günther, 1894) and Lacustricola myaposae (Boulenger, 1908) (Cyprinodontiformes, Procatopodidae)
Authors
Pedro H.N. Bragança1, Ryan M. van Zeeventer1, Roger Bills1, Denis Tweddle1, Albert Chakona1,2 1 South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, 6140, South Africa 2 Department of Ichthyology and Fisheries Science, Rhodes University, Grahamstown, South Africa
Figure 4. “Lacustricola” johnstoni colouration in life: A male SAIAB 118776, 31.0 mm SL B female SAIAB 118776, 26 mm SL; from Shire River at Liwonde Barrage, Malawi.
Abstract
Trough the analysis of a comprehensive database of COI sequences, with the sequencing of 48 speci- mens, a frst insight into the genetic diversity, distribution and relationships between the southern Africa “Lacustricola” species is presented. Species from “Lacustricola” occur mainly in freshwater systems within the arid savanna, and are considered to be widely distributed in southern Africa, but most of them are data defcient taxa. Two species are redescribed, “Lacustricola” johnstoni (Günther, 1894) and “Lacustri- cola” myaposae (Boulenger, 1908), based on specimens collected at their respective type localities. Detailed osteological and life colouration information is presented for the frst time. “Lacustricola” johnstoni was described from the Upper Shire River in Mangochi, Lake Malawi but is herein considered as widespread in the Okavango, Zambezi, southern Africa east coastal drainages and the Bangweulu in the Congo Sys- tem. A sympatric similar species occurring in the Okavango is also identifed. “Lacustricola” myaposae (Boulenger, 1908), was described from the Nseleni River in KwaZulu-Natal Province, South Africa and is herein considered to be endemic to the small coastal river drainages within this region. Lectotypes for both “L.” johnstoni and “L.” myaposae are designated. A new species from the Lualaba River in the Congo System, sister to “L.” macrurus is identifed, and the deep bodied “L.” jubbi is considered sister taxon to a clade including “L.” johnstoni and “L.” myaposae.
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