Labiobaetis numeratus ( Mueller-Liebenau , 1984)

Kaltenbach, Thomas & Gattolliat, Jean-Luc, 2019, The tremendous diversity of Labiobaetis Novikova & Kluge in Indonesia (Ephemeroptera, Baetidae), ZooKeys 895, pp. 1-117 : 1

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.

Figures

Figure 30. Labiobaetis numeratus, larva morphology: a Maxilla b Paraproct.

Figure 53. Distribution of Labiobaetis in Southeast Asia: a localities of all Labiobaetis species b Labiobaetis species presently known.