Bioacoustics of Hyperolius adspersus

Diagnosis . The advertisement call consists of a brief note, duration 0.04 s , and indistinguishable pulses ( Fig. 5 ). It can be distinguished from the call consisting of a brief note comprising a few initial pulses, followed by a number of pulses at a much slower pulse rate, such as H. benguellensis , H. friedemanni sp. nov . , H. howelli sp. nov . , H. igbettensis , H. inyangae sp. nov . , H. rwandae sp. nov . , H. viridis and H. poweri . It differs from the longer calls consisting of a number of pulses at a more or less constant rate, such as H. acuticeps , H. jacobseni sp. nov . , H. nasutus , H. nasicus and H. dartevellei . See Table 3 for a summary of call parameters. The snout is truncated to bluntly rounded, which differs from the sharp, shark-like profile of H. benguellensis and H. inyangae sp. nov . , and the sharply rounded snout profile of H. acuticeps , H. friedemanni sp. nov . , H. lupiroensis sp. nov . , H. nasutus and H. rwandae sp. nov . The fifth toe has about half a phalanx free of web. This distinguishes it from those species that have one or more phalanges of the fifth toe free, H. benguellensis , H. howelli , H. inyangae , H. lamottei and H. nasicus ; and those with the fifth toe fully webbed, H. friedemanni , H. jacobseni , H. lupiroensis and H. rwandae .It has one phalanx free of webbing on the fourth toe, which distinguishes it from H. dartevellei , which has less than a phalanx free; nasutus which is webbed to the disc at least on one side; and H. poweri and H. viridis which have more than one phalanx free. It has no more than one phalanx free on the second toe, at least on one side, which distinguishes it from H. igbettensis which has more than one phalanx free of the second toe at least on one side