The Distribution of Cercopithecus (Lhoesti) Solatus, an Endemic Guenon of Gabon
Abstract
A new guenon, Cercopithecus (lhoesti) solatus Harrison 1988, was recently discovered in the tropical rain forest of Gabon. Its colour and coat pattern, its karyotype, and its vocal repertoire (Harrison, 1988; Dutrillax et. al., 1988; Gautier, 1988a respectively), indicated that it belonds to the lhoesti superspecies. However, while it appears to be morphologiclly intermediate between C. preussi and C. lhoesti - although possibly closer to preussi (Harrison, 1988) - its vocal repertoire shows greater affinities with lhoesti (Gautier, 1988a). The three species share the same number of chromosomes (2n = 60), but the solatus karyotype differs by three chromosomal rearrangements from both lhoesti and preussi. Their relationships based on morphocline colour patterns are still debated (Harrison, 1988; Grubb, 1990), and the relative affinities between the three species remain unclear.
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