Astylosternus laurenti

Description. Long slender tadpole with long, muscular tail (Fig. 7); body oval in dorsal view, bullet-shaped in lateral view; snout rounded in dorsal view, more narrowly rounded in lateral view; body length 34.2 % of total length; body height 41.8 % of body length; body width 54.8 % of body length; eyes positioned dorsolaterally, eye diameter 13.0 % of body length; nostrils positioned dorsolaterally, closer to snout tip than to eyes; inter-nostril distance 77.1 % of interorbital distance; tail fins narrow, dorsal and ventral fin originating from tail base; ventral fin height narrower, measuring 72.2 % of dorsal fin height; highest part of tail slightly behind the middle of the tail; body height 77.1 % of maximum tail height; tail axis width 47.4 % of body width; tail axis height 61.5 % 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 ca 20 triangular papillae (Fig. 7 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 tadpole (Gosner stage 25) measures 51.7 mm in total length.

Material examined. ZMB 88353 (GenBank MK 318855), 1 tadpole, Gosner stage 25, Cameroon, Korup National Park, Bera, 564 m, 5 ° 21 ' 59.57 " N, 8 ° 59 ' 45.6 " E, 22 May 2014, leg. F. Muehlberger. The tadpole was caught in a forest stream. It was genotyped and compared with an adult from east of Ntale village, Banyang-Mbo, Cameroon (MCZ A- 136785; GenBank MK 318856); the uncorrected p-difference was 0.2 % (1 bp) (compare Taxonomic remarks in the description of the A. fallax tadpole).