Review of the filter-feeding caddisfly subfamily Macronematinae (Trichoptera: Hydropsychidae) in tropical Southeast Asia Author Uy, Christine Jewel C. Author Malicky, Hans Author Bae, Yeon Jae text Raffles Bulletin of Zoology 2018 2018-11-15 66 664 703 journal article 10.5281/zenodo.5360916 2345-7600 5360916 5AC21789-E1C1-4B48-813D-667D7638893C Macrostemum opulentum Ulmer, 1905 ( Figs. 131–136 ) Macrostemum opulentum Ulmer, 1905a: 84 [ Holotype male; Borneo ; MNHN ]. Diagnosis. Male. Antennae broken. Antennal flagellum darker brown in first few segments and brown throughout. Forewing 9 mm and hindwing 7 mm in length. Mesoscutum and mesoscutellum without evident markings. Tibial spurs 2.4.4. Male genitalia. Inferior appendages two-segmented, separation of harpago and coxopodite almost in the middle ( Fig. 133 ). In lateral view, phallus with flat apex ( Fig. 135 ), spatulate in dorsal view ( Fig. 136 ). In dorsal view, segment IX squarish ( Fig. 134 ). Segment X divided medially with long lobes, widely separated towards the apex in dorsal view ( Fig. 134 ). Female. Antennae broken. Antennal flagellum same as males. Forewing 9 mm and hindwing 7 mm in length. Mesoscutum and mesoscutellum without evident markings. Tibial spurs 2.4.4. Material examined. Malaysia : 3 males , 12 females , Sabah , Kinabalu National Park , Poring hot spring, coll. I. Sivec , 21 April 1999 (HMPC) . Distribution. Borneo, Indonesia . Remarks. Based on the original description by Ulmer (1905), only the forewing pattern was illustrated. Two forewing colour patterns were observed ( Figs. 131, 132 ).