Labiobaetis borneoensis ( 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

24. Labiobaetis borneoensis ( Mueller-Liebenau, 1984) Figures 42 , 53b

Diagnosis.

Larva. Following combination of characters: A) dorsal surface of labrum with submarginal arc of nine or ten feathered setae; B) labial palp segment II with a large, lobed distomedial protuberance, segment III oblong, apically slightly pointed; C) fore femur rather slender, length 3.6 × maximum width, dorsal margin with a row of 11-13 curved, spine-like setae; D) seven pairs of gills; E) hindwing pads present, small; F) distolateral process at scape well developed.

Examined material.

1 larva (on slide, GBIFCH00465236), Indonesia, East Kalimantan, Bas. Malinau, River Rian, loc. Langap South (1997-bloc 6), trib. Belakau, 03°04.07'N, 116°30.43'E, 07.VII.2000, P. Derleth leg.; 1 larva (on slide, GBIFCH00465237), Indonesia, East Kalimantan, Bas. Malinau, River Rian, loc. Seturan (1998-block 32-33), tributary, 03°00.95'N, 116°32.27'E, 30.III.2001, P. Derleth leg.

Figures

Figure 42. Labiobaetis borneoensis, larva morphology: a Maxilla b Labial palp c Metanotum.

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