GOBIID FISHES OF THE GENUS GLOSSOGOBIUS IN THE LIMPOPO SYSTEM: A FIRST RECORD AND A RANGE EXTENSION OF G. CALLIDUS (SMITH, 1937)

Summary

Recently, a specimen of Glossogobius callidus was collected in the Marico Oog, a major source of the Limpopo River in the western Transvaal. This locality is some 1500 km from the river mouth. Earlier taxonomic confusion of Glossogobius giuris and G. callidus has resulted in the omission of G. callidus from identification keys published before 1979. As a result, that species has not been recorded from the Limpopo system. A previously published record of G. giuris from that system, at a locality about 950 km from the sea, is now shown to be based on a misidentification of G. callidus specimens.