Astylosternus fallax

Description. Long slender tadpole with long, muscular tail (Fig. 4); body oval in dorsal and lateral view; snout rounded in dorsal and lateral view; body length 36.3 + / - 2.6 % of total length; body height 40.3 + / - 3.3 % of body length; body width 56.2 + / - 4.4 % of body length; eyes positioned dorsolaterally, eye diameter 11.4 + / - 0.5 % of body length; nostrils positioned dorsolaterally, closer to snout tip than to eyes; inter-nostril distance 74.1 + / - 7.0 % of interorbital distance; tail fins narrow, dorsal and ventral fin originating from tail base; ventral fin height narrower, 68.9 + / - 11.5 %, than dorsal fin height; highest part of tail approximately in the middle of the tail; body height 96.6 + / - 14.8 % of maximum tail height; tail axis width 45.6 % + / - 10.0 % of body width; tail axis height 69.3 + / - 4.7 % of maximum tail height; tail tip pointed; vent tube dextral; body with large lateral sacs, extending from spiracle to end of body; short spiracle, sinistral; mouth positioned rostroventral, narrower than interorbital distance; keratodont formula 1: 2 + 2 / 2 + 2: 1; anterior lip with lateral papillae and big rostral gap; posterior lip with 2 or 3 rows of app. 20 triangular papillae (Fig. 4 c), papillae of inner row (or rows) shorter than in the marginal row; black jaw sheaths massive and serrated; upper jaw sheath with a small medial fang, lower jaw U-shaped with a broad medial notch. The tadpoles (all Gosner stage 25) ranged from 45 mm to 74 mm total length.

Material examined. ZMB 82868 (GenBank MK 318849), 3 tadpoles, Gosner stage 25, Cameroon, Ebo Forest, Njuma, 373 m, 4 ° 20 ' 54.66 " N, 10 ° 14 ' 24.3 " E, 16 July 2011, leg. M. Dahmen & M. Hirschfeld; ZMB 82869 (GenBank MK 318850), 1 tadpole, Gosner stage 25, Cameroon, Ebo Forest, Njuma, 306 m, 4 ° 20 ' 35.64 " N, 10 ° 14 ' 0.54 " E, 29 September 2010, leg. M. Hirschfeld & M. - O. Roedel. All tadpoles were caught in forest streams. The description is mainly based on ZMB 82868. Genotyped tadpoles have been compared with an adult from Bekop, Ebo forest, Cameroon (ZMB 82787; GenBank MK 318851). The two tadpoles and the adult were genetically identical.

Description. Long slender tadpole with long, muscular tail (Fig. 5); body oval in dorsal view, bullet-shaped in lateral view; snout rounded in dorsal and lateral view; body length 31.7 % of total length; body height 34.9 % of body length; body width 48.4 % of body length; eyes positioned dorsolaterally, eye diameter 10.7 % of body length; nostrils positioned dorsolaterally, closer to snout tip than to eyes; inter-nostril distance 86.7 % of interorbital distance; tail fins narrow, dorsal and ventral fin originating from tail base; ventral fin height narrower, 73.2 % of dorsal fin height; highest part of tail approximately at two-thirds of the tail; body height 72.3 % of maximum tail height; tail axis width 52.6 % of body width; tail axis height 65.3 % of maximum tail height; tail tip pointed; vent tube dextral; body with lateral sacs, extending from spiracle to end of body; short spiracle, sinistral; mouth positioned rostroventral, narrower than interorbital distance; keratodont formula 1: 2 + 2 + 2 / 2 + 2: 1; anterior lip with lateral papillae and big rostral gap; posterior lip with 2 or 3 rows of ca 20 massive papillae, papillae of marginal row are distinctly longer than of inner rows (Fig. 5 c); black jaw sheaths massive and serrated; upper jaw sheath with a small medial fang, lower jaw U-shaped with a broad medial notch. The tadpole (Gosner stage 25) measures 97.4 mm in total length.

Material examined. ZMB 82867 (GenBank MK 318852), Gosner stage 25, Cameroon, foot of Mt Nlonako, Ekomtolo, 477 m, 4 ° 49 ' 58.46 " N, 9 ° 55 ' 33.42 " E, 24 November 2011, leg. M. F. Barej, H. C. Liedtke, N. L. Gonwouo & M. Hirschfeld. The tadpole was caught in a forest stream. The genotyped tadpole has been compared with the two adults from Mount Nlonako, Cameroon (ZFMK 81164 and ZFMK 81608; GenBank MK 318853, MK 318854). The tadpole was genetically identical to these adults (compare Taxonomic remarks in the description of the A. fallax tadpole).