Bioacoustics of Hyperolius viridis

Diagnosis . The advertisement call ( Fig. 15 ) consists of a brief initial note consisting of 26 pulses followed by five slower pulses, with a duration of 0.41 s . It can be distinguished from species producing only a single note, and those producing only a buzz: H. acuticeps , H. adspersus , H. dartevellei , H. jacobseni , H. lupiroensis , and H. nasutus . It can be distinguished from the other species producing a two-part call, which have a duration less than 0.4 s : H. friedemanni , H. howelli , H. igbettensis , H. inyangae , H. poweri and H. rwandae . It differs from H. benguellensis which only has five pulses in the initial note. See Table 3 for a summary of call parameters. The snout is bluntly rounded, distinguishing it from those with truncated, shark-like or sharply rounded snouts: H. acuticeps , H. benguellensis , H. dartevellei , H. friedemanni , H. howelli , H. inyangae , H. lupiroensis , H. nasutus , and H. rwandae . The webbing has one phalanx free on the first to third toes, just more than one free on the fourth toe, and half a phalanx free on the fifth toe. It can be distinguished from the species that are webbed to the disc on the fifth toe: H. adspersus , H. friedemanni , H. jacobseni , H. lupiroensis , and H. rwandae . It differs from the species that have more than half a phalanx free of web on the fifth toe: H. acuticeps , H. benguellensis , H. dartevellei , H. howelli , and H. inyangae . It can be distinguished from the remaining species that are webbed to the disc on the third or fourth toes: H. adspersus and H. nasutus . Our specimens show the stocky build noted by Schiøtz (1975).