Bioacoustics of Hyperolius lupiroensis

Diagnosis . The advertisement call ( Fig. 11 ) consists of a single unpulsed note, with a duration of 0.06 s . It can be distinguished from the species with calls consisting of a few initial pulses, followed by a number of pulses at a much slower pulse rate, such as H. benguellensis , H. friedemanni , H. howelli , H. igbettensis , H. inyangae , H. rwandae sp. nov . , H. viridis , and H. poweri . It is different from the longer calls consisting of a number of pulses at a more or less constant rate, such as H. acuticeps , H. dartevellei , H. jacobseni , and H. nasutus . See Table 3 for a summary of call parameters. The snout is sharply rounded in profile, which distinguishes it from those species with truncated, shark-like, or bluntly rounded snouts: H. benguellensis , H. howelli , H. igbettensis , H. inyangae , H. jacobseni , H. poweri , H. dartevellei and H. viridis . The toes are webbed with one phalanx of the third and fourth toes free, and the fifth toe webbed to the disc. This pattern distinguishes it from those species that do not have the fifth toe webbed to the disc: H. acuticeps , H. benguellensis , H. dartevellei , H. howelli , H. igbettensis , H. inyangae , H. nasutus , H. poweri and H. viridis . It differs from H. friedemanni which has all the toes webbed to the disc, from H. rwandae sp. nov . which has two phalanges of the third toe free, and from H. adspersus which has the fourth toe webbed nearly to the disc.