Polymorphanisus astictus Navás, 1923

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 : 688-690

Polymorphanisus astictus Navás, 1923

( Figs. 183 , 193 , 202–204, 226)

Polymorphanisus astictus Navás, 1923: 47 [Lectotype male; China; MNHN ( Barnard, 1980: 79)].

Polymorphanisus hainanensis Martynov, 1930: 82 [Holotype male; China; NHMUK; synonymised by Barnard, 1980: 79].

Polymorphanisus flavipes Banks, 1939: 53 [Holotype female; India; MCZ; synonymised by Barnard, 1980: 79].

Diagnosis. Male. Antennae 50 mm in length. Antennal flagellum brown with darker striations. Forewing 23 mm and hind wing 15 mm in length. Mesoscutum and mesoscutellum without evident markings ( Fig. 183 ). Tibial spurs 1.3.3.

Male genitalia. Inferior appendages two-segmented. In dorsal view, phallus with rounded apex (Fig. 204). Segment IX produced into rounded lobe. In dorsal view, segment

X with reduced lobes with almost not obvious separation medially ( Fig. 226 ).

Female. Antennae 30 mm in length. Antennal flagellum brown with darker striations. Forewing 25 mm and hind wing 15 mm in length. Mesoscutum and mesoscutellum without evident markings ( Fig. 183 ). Tibial spurs 1.3.3.

Material examined. Thailand: 1 male, 1 female, Kuiburi National Park , Prajuab, Kirikhan Province, coll. P. Laudee, 15 February 2015 ( UPLBMNH) .

Distribution. China, India, Thailand, Malaysia (Johor, Pahang), Sumatra.

Remarks. Barnard (1980) provided a detailed redescription of this species. Other diagnostic characters are illustrated in Figs. 183 , 193 , 202–204, and 226.

Figures

Figs. 183–192. Polymorphanisus thorax. 183, astictus, ocularis male and female thorax; 16, fuscus male thorax; 184–185, fuscus female thorax; 186, muluensis male and female thorax; 187, nigricornis male and female thorax; 188, quadripunctatus male and female thorax; 189, semperi male and female thorax; 190, scutellatus male thorax; 191, scutellatus female thorax; 192, unipunctus male and female thorax. Scale = 2 mm (189 redrawn from Barnard, 1980).

Figs. 193–201. Polymorphanisus male right fore- and hind wings. 193, astictus; 194, fuscus; 195, muluensis; 196, nigricornis; 197, ocularis; 198, quadripunctatus; 199, semperi; 200, scutellatus; 201, unipunctus. Scale = 5 mm (199 redrawn from Barnard, 1980).

Figs. 226–234. Polymorphanisus segment X of male genitalia. 226, astictus; 227, fuscus; 228, muluensis; 229, nigricornis; 230, ocularis; 231, quadripunctatus; 232, semperi; 233, scutellatus; 234, unipunctus. Scale = 0.5 mm (232 redrawn from Barnard, 1980).