17. Labiobaetis numeratus (Mueller-Liebenau, 1984) Figure 30, 53b

Diagnosis.

Larva. Following combination of characters: A) dorsal surface of labrum with submarginal arc of 1 + ca. 7 simple setae; B) labial palp segment II with a large, thumb-like distomedial protuberance; segment III conical, apically rounded; C) right mandible with a pronounced hump between prostheca and mola; D) hypopharynx with medial tuft of stout setae well developed; E) maxillary palp much longer than length of galea-lacinia; F) fore femur rather broad, length ca. 3 × maximum width, dorsal margin with ca. seven curved, spine-like setae; G) tarsal claw with 10-12 denticles; H) paraproct distally not expanded, with 12-14 stout marginal spines.

Examined material.

Paratype. 1 larva (on slide, no. 40), W. Malaysia, Gombak River, 4½ miles N of Kuala Lumpur, 19.X.[19]68, Bishop leg.