Quasipaa jiulongensis (Huang & Liu, 1985)

Figs 4, 5 E, F, Table 1

Specimen examined.

CIB T 1027 (Stage 25, field voucher WT 07) collected on 26 July 2023 from Dazhulan, Guadun, Wuyishan, Fujian Province, China.

External morphology.

A tadpole in stage 25, TTL 33.2 mm, BL 11.5 mm; the body is oval, BW / BH 133 %; the snout is slightly pointed in lateral view; the eyes are moderate in size, positioned and directed dorsolaterally, not visible from ventral view, ED / BL 13 %; the pupils are round; the nares positioned and directed anterolaterally, closer to snout than to eye, RND / NPD 90 %, NND / PPD 65 %; the rim of nares slightly raised from the body wall; the spiracle is single, short, and sinistral; the opening of spiracle is narrower than the tube, oriented posterodorsally, free from the body wall at the tip, and closer to the tip of snout than to the anal tube opening, SSD / BL 63 %; the tail muscle is relatively weak, gradually tapering until reaching the tail tip, TMH / BH 51 %, TMH / MTH 41 %; the tail fins are moderate in size, UFH / MTH 36 %, LFH / MTH 25 %, MTH / BH 124 %; the upper fin arises in front of the body-tail junction, SUD / BL 90 %; the lower fin is connected to the trunk; the tail tip is rounded; the anal tube is medial, entirely attached to lower fin, opening on lateral right side, and posteriorly directed; the oral disc is positioned and directed anteroventrally, emarginated, and elliptical, ODW / BL 29 %, ODW / BW 51 %; a row of papillae on of upper labium, with a large papilla gap, DG / ODW 52 %; two rows of papillae on lower labium; a median notch on the lower labium, and the papillae on the inner row are slightly larger; KRF 1: 4 + 4 / 1 + 1: 2; the 1 st – 3 rd tooth rows on upper labium are subequal, the inner 4 th – 5 th rows gradually shortened; the 1 st – 3 rd tooth rows on lower labium gradually shortened; the jaw sheaths are keratinized with fine serrations; the upper sheath covers the lower sheath; both sheaths are subequal in width.

In life, the body is pale brown laterally, scattered with goldish speckles; the tail muscle and fin are pigmented with cloud-form dark speckles, and interspersed with goldish chromocytes; dorsally, the body and tail are brown, the trunk is darker, especially the middle area of body-tail junction; the lateral lines are goldish and clearly visible; the iris is bronze, and the pupil is black; ventrally, the body and tail translucent scattered with whitish speckles along the periphery; the chest is pink; the gut coil is distinctly visible.