Labiobaetis diffundus ( 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

7. Labiobaetis diffundus ( Mueller-Liebenau, 1984) Figures 13 , 53b

Diagnosis.

Larva. Following combination of characters. A) dorsal surface of labrum with submarginal arc of ca. 16 clavate setae; B) labial palp segment II with a large, lobed distomedial protuberance, segment III slightly pentagonal, apically slightly pointed; C) left mandible without setae at apex of mola; D) fore femur rather slender, length ca. 4 × maximum width, dorsal margin with a row of 10-13 curved, spine-like setae, femoral patch well developed; E) tarsus with pectinate setae at ventral margin (difficult to see), claw with ca. ten denticles; F) paraproct distally not expanded, with ca. 35 stout marginal spines.

Examined material.

Paratypes. 1 larva (on slide, no. 21), W. Malaysia, Gombak River, 4 ½ miles N. of Kuala Lumpur, 6.II.[19]69, Bishop leg.; 1 larva (on slide, no. 41), W. Malaysia, trib. of Gombak River, 16 ½ miles N. of Kuala Lumpur, 14.XI.[19]68, Bishop leg.

Figures

Figure 13. Labiobaetis diffundus, larva morphology: a Maxilla b Foreleg c Fore tibia dorsal seta d Fore tarsus ventral seta e Femur dorsal margin f Paraproct.

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