Abstract
Measurements of volar (hand) pad area were made for 244 specimens, representing 12 species and 4 genera of galagos (sub-family Galaginae). When corrected for body weight, statistically significant differences were identified, at both the genus and species levels in the areas of the volar pads. Most informative, in terms of taxonomic differences, were measurements of two of the five pads; interdigjtal pad number 4 and thenar pad number 5. Closely related species were distinguishable on the basis of these measurements. The thick-tailed galago (Otolemur crassicaudatus) was separate from Garnett's galago (O. garnettii) and the specific status of the silver greater galago (O. argentatus) was supported. Likewise, the two needle-clawed galagos (Euoticus elegantulus andE. pallidus), recently separated on mitochodrial DNA grounds, were found to differ significantly in their volar pad morphology. These studies show that comparative studies of volar hand pad morphology provide a novel approach to the re-assessment of galago taxonomy, and may be applicable also in taxonomic studies of other prosimian groups.
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