Pseudoleptonema sinuatum Ulmer, 1906

Uy, Christine Jewel C., Malicky, Hans & Bae, Yeon Jae, 2018, Review of the filter-feeding caddisfly subfamily Macronematinae (Trichoptera: Hydropsychidae) in tropical Southeast Asia, Raffles Bulletin of Zoology 66, pp. 664-703 : 696

Pseudoleptonema sinuatum Ulmer, 1906

( Figs. 240–244 )

Macronema sinuatum Ulmer, 1906: 71 [Holotype male; Borneo; LMNH].

Pseudoleptonema sinuatum Ulmer ; Malicky, 1998b: 780 (redescription, transferred from genus Macronema ).

Diagnosis. Male. Antennae 23 mm in length. Antennal flagellum light brown with darker striations. Forewing 11 mm and hind wing 8 mm in length with light brown markings ( Fig. 240 ). Mesoscutum and mesoscutellum without evident markings. Tibial spurs 1.4.4.

Male genitalia. Inferior appendages two-segmented. In lateral and dorsal view, phallus with more rounded apex than P. supalak ( Fig. 243, 244 ). Segment X with prominent rounded tip with setal warts ( Fig 241 ). In dorsal view, setal area in tip of segment X like oval area only attached at surface of segment X ( Fig. 242 ).

Female. Antennae 20 mm in length. Antennal flagellum same colouration as male. Forewing 10 mm and hind wing 8 mm in length. Mesoscutum and mesoscutellum same as male. Tibial spurs 1.4.4.

Materials examined. Indonesia: 1 male, 8 females, East Kalimantan, Pujungan, Kayan-Mentarang Natural reserve , coll. D.C. Darling, 1–2 March 1993 ( ROM: 112643) ; 1 female, East Kalimantan, Seturan River , coll. P. Derleth and M. Sartori, 20 April 2001 (HMPC) ; Malaysia: 3 males, Sabah, Kinabalu National Park, Poring hot spring, coll. I. Sivec, 22 April 1999 (HMPC).

Distribution. Borneo, Indonesia.

Figures

Figs. 235–257. Pseudoleptonema erawan. 235, right forewing; Male genitalia: 236, lateral; 237, segment X dorsal; 238, phallus lateral; 239, phallus tip. Pseudoleptonema sinuatum. 240, right fore- and hind wing; Male genitalia: 241, lateral; 242, segment X dorsal; 243, Phallus lateral; 244, Phallus tip. Pseudoleptonema supalak. 245, right fore- and hind wing; Male genitalia: 246, lateral; 247, segment X dorsal; 248, phallus lateral; 249, phallus tip. Pseudoleptonema quinquefasciatum. 251, right fore- and hind wing; Male genitalia: 252, lateral; 253, segment X dorsal; 254, phallus lateral; 255, phallus tip; 256, Head dorsal. Pseudoleptonema tansoongnerni. 257, right forewing. Scale: 235, 240, 245, 251, 257 = 2 mm; 236–239, 241–244, 246–249, 252–255 = 0.02 mm; 256 = 0.5 mm.