Macrostemum bellum Banks, 1916

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 : 672

Macrostemum bellum Banks, 1916

( Fig. 52 )

Macrostemum bellum Banks, 1916: 214 [Holotype male; Philippines ( Luzon ); MCZ].

Distribution: Philippines.

Remarks. This rare species has never been collected in the Philippines again, therefore, no other individual was examined. The male wing ( Fig. 52 ) was redrawn from Banks (1916: pl. II, Fig. 19 ).

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).

Figs. 17–36. Amphipsyche gratiosa. 17, right forewing; Male genitalia: 18, lateral; 19, segment X dorsal; 20, phallus lateral; 21, phallus tip. Amphipsyche magna. Male genitalia: 22, lateral; 24, phallus lateral; 25, phallus tip; 23, thorax. Amphipsyche meridiana. 26, right forewing; Male genitalia: 27, lateral; 28, segment X dorsal; 29, phallus lateral; 30, phallus tip. Amphipsyche parva. Male genitalia: 31, lateral; 32, phallus lateral; 33, phallus tip. Amphipsyche petiolata. 34, lateral; 35, phallus lateral; 36, phallus tip. Scale: 17, 26 = 2 mm, 18–25, 27–36 = 0.25 mm (22–25, 27–36 redrawn from Barnard, 1984).