The tadpole attains a size of 33 mm (10+23) and has a tooth formula of 1/3.
This species is called Hyperolius acuticeps (Channing et al. 2002) or Hyperolius igbettensis in some recent literature. Due to nomenclatorial uncertainty, the well established name H. nasutus is used here (Schiøtz 2006).
Several subspecies have been described, but our understanding of the variation within this species is not sufficient to establish such subspecies. Furthermore the complex may contain several cryptic species. Thus in southern Africa, the very similar H. benguellensis has recently been recognized as a separate species.
Channing has stated that the South African populations differ, e.g. in voice, from more northern populations of H. nasustus and should be recognised as H. poweri Loveridge 1938.
There is a form in south-western Cameroun southwards at least as far as R. Congo, probably to Kinshasa in R. D. Congo, which is probably a distinct species. It is similar to H. nasutus but differs in morphology, having a briefer snout and a broader body, and has a somewhat different voice and habitat preference (bushland and humid savanna). This species is being studied by Amiet, and has been recorded as Hyperolius sp. aff. nasutus by Largen and Dowsett-Lemaire (1991) from R. Congo.
This account was taken from "Treefrogs of Africa" by Arne Schiøtz with kind permission from Edition Chimaira publishers, Frankfurt am Main.
- Schiøtz, A. (1999). Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.
- Largen, M. J. and Dowsett-Lemaire, F. (1991). ''Amphibians (Anura) from the Kouilou River Basin, République du Congo.'' Tauraco Research Report, 4, 145-168.
- Schiøtz, A. (2006). ''Reflections on the Hyperolius nasutus group.'' Alytes, 24(1-4), 61-71.
- Channing, A., Moyer, D., and Burger, M. (2002). ''Cryptic species of sharp-nosed reed frogs in the Hyperolius nasutus complex: advertisement call differences.'' African Zoology, 37(1), 91-99.