A new species of Oncocypris (Ostracoda) from a crater lake in West Cameroon

Abstract

A new species, Oncocypris debundshae, is described from the crater lake on Cape Debundsha.

Ecological studies on crater lakes in West Cameroon. Debundsha Lake

“…Measurements of 17 eggs from four females gave mean diameters of 72.1 x64.3 pm. These eggs are distinctly smaller than eggs of the same species from Barombi Mbo (Green, 1972), although the females are slightly larger than those from Barombi Mbo.…”

“…When the number of setae in the mandibular fan (ten for the third-instar larva and 14 for the fourths) was plotted against the antennal length these specimens lay along the same line as specimens from Lakes Kotto and Soden. Their position intermediate between specinicns from these two lakes confirms the conspecificity of the larvae from the three sites (see Green, 1972). The larvae from Barombi Mbo are quite distinct (Green, 1972) and should not be included in c'.…”

“…Their position intermediate between specinicns from these two lakes confirms the conspecificity of the larvae from the three sites (see Green, 1972). The larvae from Barombi Mbo are quite distinct (Green, 1972) and should not be included in c'. c~c r~i t o p o~o n e~.~ without examination of adults as has recently been done by McGowan (1972).…”

“…Such pools are usually acid and poor in dissolved salts. This rotifer has also been recorded from water of low conductivity in the Mato Grosso, Central Brazil (Green, 1972).…”

“…Cliuohorus c'c'rcitopogonc's T heo ba I d Cliaoborus larvae taken in Il-m vertical plankton hauls were identified as c'. cwutopogoncs by comparison with Verbecke's (1957) Kotto that were associated with an adult of that species (Green, 1972). The Debundsha larvae were mostly in their third and fourth instars and had antennal lengths of 233 pm and 360-390 pm respectively.…”