Macrostemum bellerophon Malicky & Chantaramongkol, 1998

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 : 670-672

Macrostemum bellerophon Malicky & Chantaramongkol, 1998

( Figs. 47–51 )

Macrostemum bellerophon Malicky & Chantaramongkol (in Malicky, 1998b): 774 [Holotype male; Thailand; HMPC].

Diagnosis. Male. Antennae broken. Antennal flagellum dark brown in first few segments then lighter throughout with darker striations. Forewing 13 mm and hind wing 10 mm in length. Forewing markings as shown ( Fig. 47 ). Mesoscutum and mesoscutellum without evident markings. Tibial spurs 2.4.4.

Male genitalia. Inferior appendages two-segmented, harpago blunt ( Fig. 48 ). In dorsal view, phallus with oval apex ( Fig. 51 ). In lateral view, phallus with an opening in center making posterior area of apex longer than anterior area ( Fig. 50 ). Segment X divided medially, each lobe larger than segment X of other Macrostemum species ( Fig. 49 ).

Type material examined. Holotype. Thailand: male, Doi Inthanon, Bang Khun Klang, coll. P. Chantaramongkol & H. Malicky, 29 August–5 September 1989 (HMPC).

Paratypes. Thailand: 3 males, Doi Inthanon, Bang Khun Klang, coll. P. Chantaramongkol & H. Malicky, 7–14 November 1989 (HMPC) .

Distribution: Thailand.

Remarks. No female specimens were available for examination.

Figures

Figs. 42–58. Macrostemum bacham. 42, right forewing; Male genitalia: 43, lateral; 44, segment X dorsal; 45, phallus lateral; 46, phallus tip. Macrostemum bellerophon. 47, right forewing; Male genitalia: 48, lateral; 49, segment X dorsal; 50, phallus lateral; 51, phallus tip. Macrostemum bellum. 52, right forewing. Macrostemum bifenestratum. 53, right forewing. Macrostemum boettcheri. 54, right forewing; Male genitalia: 55, lateral; 56, segment X dorsal; 57, phallus lateral; 58, phallus tip. Scale: 42, 47, 52–53 = 2 mm; 43–46, 48–51, 55–58 = 0.02 mm (43–46 redrawn from Malicky, 2010; 52 redrawn from Banks, 1916; 56 redrawn from Navás, 1929).