Petropedetes

Barej, Michael F., Rödel, Mark-Oliver, Gonwouo, Legrand Nono, Pauwels, Olivier S. G., Böhme, Wolfgang & Schmitz, Andreas, 2010, Review of the genus Petropedetes Reichenow, 1874 in Central Africa with the description of three new species (Amphibia: Anura: Petropedetidae), Zootaxa 2340, pp. 1-49 : 41

Key to adult Central African Petropedetes species

1 toes fully webbed .......................................................................................................................................................... 2

1’ toes half-webbed or rudimentary-webbed .................................................................................................................... 3

2 tympanum distinct; in males ¾ of eye diameter or larger, males with tympanic papillae ( Fig. 8 a) and carpal spike in breeding season, tympanum in females up to ¾ of eye diameter; femoral glands large (larger in males) ...... P. perreti

2’ tympanum indistinct in both sexes ( Fig. 8 d), small; males without tympanic papillae, but with carpal spike in breeding season; femoral glands large to very large (larger in males) ................................................................ P. palmipes

3 toes half-webbed ...........................................................................................................................................................4

3’ toes rudimentary-webbed.............................................................................................................................................. 5

4 tympanum distinct; males with tympanic papillae ( Fig. 8 c) and carpal spike in breeding season; femoral gland line shaped in both sexes ( Fig. 9 c) .............................................................................................. P. juliawurstnerae sp. nov.

4’ tympanum indistinct; males without tympanic papillae or carpal spike ( Fig. 8 b); femoral gland ovoid ( Fig. 9 b), larger in males ....................................................................................................................................... P. cameronensis

5 tympanum small but distinct, in males smaller or equal to eye diameter, in females tympanum less than half eye diameter ( Fig. 1 a); males with tympanic papillae and carpal spike in breeding season; femoral gland large................ ..................................................................................................................................................................... P. johnstoni

5’ tympanum of moderate size or large and distinct, in males usually bigger than the eye, in females half the eye diameter or larger; males with tympanic papillae and carpal spike in breeding season; femoral gland very small to moderate .................................................................................................................................................................................. 6

6 femoral gland of moderate size; tympanum in males usually oval shaped or flattened, males with tympanic papillae closer to the centre than upper border, carpal spike present in breeding season; females larger than males; species of moderate size (males: <43 mm; females: <47 mm)........................................................................ P. vulpiae sp. nov.

6’ femoral gland small or very small, shifted to the posterior side of the leg; tympanum in males rounded or flattened; males with tympanic papillae closer to upper border than to centre, carpal spike present in breeding season; large species (males:> 60 mm; females:> 50 mm) .............................................................................................................. 7

7 femoral gland small but distinct ( Fig. 2 c), in males about 22% of femur length; tympanum in males ¾ of eye diameter or larger than eye, occurs in lower altitudes of south-western Cameroon and eastern Nigeria ( Fig. 4 ) .... P. parkeri

7’ femoral gland very small (smallest in genus Fig. 2 d), in males only about 16% of femur length; tympanum in males as large as eye diameter, occurs in higher altitudes at Mt. Kupe and Mt. Nlonako ( Fig. 4 ) ....... P. euskircheni sp. nov.

Figures

FIGURE 1. Life coloration of rudimentary-webbed Central African Petropedetes. a) Petropedetes johnstoni (male and female: Nkoelon, Cameroon), b) P. vulpiae sp. nov. (male and female: Nyasoso, Mt. Kupe, Cameroon), c) P. parkeri (male Nguti, Cameroon; female: Amebishu, Cameroon) d) P. euskircheni sp. nov. (male: Nyasoso, Mt. Kupe, Cameroon; female: Nguengue, Mt. Nlonako, Cameroon).

FIGURE 2. Relation of femoral gland to femur and shape of femoral gland in Central African Petropedetes with rudimentary webbing. a) Petropedetes johnstoni (male and female: MSNG 29890), b) P. vulpiae sp. nov. (male: ZFMK 81623; female: ZFMK 81554), c) P. parkeri (male: PEM A 9125; female: PEM A 9127), d) P. euskircheni sp. nov. (male: ZFMK 75582; female: MHNG 2713.11).

FIGURE 4. Distribution of known Petropedetes species; compare with text. Specimens from localities marked with an asterisk (*) were not available and are added from literature.

FIGURE 8. Life coloration of Central African Petropedetes with developed webbing: a) Petropedetes perreti (male: Mt. Manengouba, Cameroon; female: Nguengue, Mt. Nlonako, Cameroon), b) P. cameronensis (left: Limbe, Cameroon; right: Rhoko-forest, Nigeria), c) P. juliawurstnerae sp. nov. (male and female: Nyasoso, Mt. Kupe, Cameroon, d) P. palmipes (left male: Monte Alen, Equatorial Guinea; photo: I. de la Riva; right male: Bipindi, Cameroon; photo: H. - W. Herrmann).

FIGURE 9. Relation of femoral gland to femur and shape of femoral gland in Central African Petropedetes with developed webbing: a) Petropedetes perreti (male: ZFMK 69215; female: ZFMK 69211), b) P. cameronensis (male: ZFMK 81616; female: ZFMK 81555), c) P. juliawurstnerae sp. nov. (male: ZFMK 67360; female: ZFMK 68134), d) P. palmipes (male: MHNG 1033.28; female: MHNG 1033.5).