Polymorphanisus Walker, 1852

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

Genus Polymorphanisus Walker, 1852

Polymorphanisus Walker, 1852: 78 [Type species: Polymorphanisus nigricornis Walker , by monotypy].

Oestropsis Brauer, 1868: 263 [Type species: Oestropsis semperi Brauer , by monotypy; synonymised by Ulmer, 1907: 19].

Diagnosis. Head with one pair of warts on vertex. Antennae usually twice as long as forewings. Sc and R 1 in forewings separately terminating on wing margin. Specimen whitish to greenish when fresh and usually brownish if stored in alcohol for long periods of time. Mesothoracic legs with tibia and tarsus broadened.

Remarks. Barnard (1980) subdivided this genus into an ‘ ocularis- group’ and ‘ nigricornis- group’ and mentioned that additional work could determine whether the groups deserved generic status. However, because it is difficult to find male specimens and because the larvae of most species are unknown, the present study did not attempt to resolve the monophyly of the two species groups. Polymorphanisus species can be easily distinguished from one another by clearly distinct mesonotum, mesoscutellum, and metascutum markings.