Polymorphanisus quadripunctatus Ulmer, 1951 (Figs. 188, 198, 217–219, 231) Polymorphanisus quadripunctatus Ulmer, 1951: 186 [Holotype female; Borneo; ZMUH]; Weidner, 1964: 91 (Holotype depository). Diagnosis. Male. Antennae 40 mm in length. Antennal flagellum brown with darker striations. Forewing 22 mm and hind wing 12 mm in length. Mesoscutum and metascutum with evident markings as shown in Fig. 188. Mesoscutellum without evident markings (Fig. 188). Tibial spurs 1.3.3. Male genitalia. Inferior appendages two-segmented. In dorsal view, phallus with circular apex with endothecal lining very obvious (Fig. 219). In dorsal view, segment IX curved apically (Fig. 231). Female. Antennae 30 mm in length. Antennal flagellum same colouration as male. Forewing and hind wing length same as male. Mesoscutum and metascutum with evident markings same as male (Fig. 188). Mesoscutellum without evident markings (Fig. 188). Tibial spurs 1.3.3. Material examined. Malaysia: 2 males, 9 females, Sabah, Kinabalu National Park, coll. I. Sivec, 22 April 1999 (HMPC). Distribution. Borneo, Philippines. Remarks. Barnard (1980) provided a detailed redescription and remarks of this species.

Published as part of Uy, Christine Jewel C., Malicky, Hans & Bae, Yeon Jae, 2018, Review of the filter-feeding caddisfly subfamily Macronematinae (Trichoptera: Hydropsychidae) in tropical Southeast Asia, pp. 664-703 in Raffles Bulletin of Zoology 66 on pages 692-693, DOI: 10.5281/zenodo.5360916