Labiobaetis multus ( 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

26. Labiobaetis multus ( Mueller-Liebenau, 1984) Figures 44 , 51a , 53b , 55b

Diagnosis.

Larva. Following combination of characters: A) dorsal surface of labrum with submarginal arc of 1 + 2-3 simple setae; B) labial palp segment II with a thumb-like distomedial protuberance, segment III slightly pentagonal, apically slightly pointed; C) fore femur rather broad, length ca. 3 × maximum width, dorsal margin with a row of 8-10 curved, spine-like setae; D) seven pairs of gills; E) hindwing pads well developed; F) distolateral process at scape well developed; G) paraproct distally not expanded, with ca. 13 stout marginal spines.

Examined material.

Paratypes. 1 larva (on slide, no. 13), W. Malaysia, Gombak River, 4½ miles N of Kuala Lumpur, 12.XII.[19]68, Bishop leg.; 1 larva (on slide, no. 28), W. Malaysia, Gombak Riv., 9 miles N of Kuala Lumpur, 14.I.[19]68, Bishop leg. Other material. 50 larvae (4 on slides, GBIFCH00465238, GBIFCH00465239, GBIFCH00465240, GBIFCH00465241; 46 in alcohol, GBIFCH00515339), Indonesia, Sumatra Barat, Harau Canyon, stream near Ikbal's cottage, 520 m, 23.VI.2012, 00°06.44'S, 100°40.37'E, M. Balke leg. (UN11); 2 larvae (1 on slide, GBIFCH00465242; 1 in alcohol, GBIFCH00235847), Indonesia, Sumatra Barat, Talawi, Ombilin River, 277 m, 08.XI.2011, 00°34.15'S, 100°43.54'E, M. Balke leg. (UN4). Deposited in MZL.

Figures

Figure 44. Labiobaetis multus, larva morphology: a Maxilla b Labial palp c Metanotum.

Figure 51. Habitus, larvae, dorsal view: a Labiobaetis multus b Labiobaetis jonasi sp. nov. c Labiobaetis jonasi sp. nov. d Labiobaetis paraoperosus sp. nov.

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

Figure 55. Distribution of Labiobaetis in Indonesia.