01883nas a2200193   4500008004100000245012300041210006900164260001300233300001200246490000800258520126800266100001901534700002101553700002101574700001701595700002301612700001901635856003501654       2007                        eng d00aLarval morphology of reed frogs, Hyperolius kivuensis and H. viridiflavus, from western Kenya (Amphibia, Hyperoliidae)0 aLarval morphology of reed frogs Hyperolius kivuensis and H virid  cDec 2007  a825-8370 v1143 aWe describe external characters, oral disc and oral cavity structures of larval Hyperolius kivuensis and H. viridiflavus, i.e. exotrophous lentic benthic type IV tadpoles. External morphology of both is comparable and matches descriptions of other Hyperolius species. Differences among the two taxa were noted in the keratinized labial teeth. In H. kivuensis, the spoon-shaped cusped tooth type is frequent and represented by two different subtypes: (i) "cusped" with four cusps, the two distal of which only slightly larger than the lateral cusps; (ii) "pointed" with the two distal cusps larger than the two lateral cusps forming a bifurcation. The latter subtype is rare in H. kivuensis, while most frequent in H. viridiflavus. In this species, also another type occurs, characterized by two long distal cusps, forming a bifurcation, and two small lateral cusps; the cusped type with cusps of the same size as in H. kivuensis is rare. Both species show similar oral cavity structures except for the choanae position, i.e. arranged in a V that is opened posteriorly in H. kivuensis versus a V opened anteriorly in H. viridiflavus. Choanae position and keratinized labial teeth structure may provide diagnostic features for these and other species of Hyperolius.1 aViertel, Bruno1 aLötters, Stefan1 aBaumgart, Andrea1 aOberst, Marc1 aEisenbeis, Gerhard1 aVeith, Michael  u<Go to ISI>://PREV200800120365