Baliomorpha Neboiss, 1984

Oláh, János & de Vries, Peter Jan, 2019, New Baliomorpha species (Trichoptera, Hydropsychidae) from Papua, Indonesia, with plesiomorphic state of the phallic head János Oláh & Peter Jan de Vries, Sugapa Digital 11 (2), pp. 87-93 : 88

Genus Baliomorpha Neboiss, 1984

The overwhelming majority of species in the genus Baliomorpha have an ancestral plesiomorphic state of the phallic head with abbreviated, but still free, and not retracted terminal structures, that is the endothecal processes and phallotremal sclerites on the speciation trait of phallic head are free and well discernible. However there are species in the genus with less discernible structures and therefore their taxonomic status is established with character combination with neutral characters distinguishing Baliomorpha from (Australasian) Macrostemum . The Baliomorpha genus (1) has head frons without elevated pad, (not with elevated setose pad); (2) the maxillary palp has segment 1 and 2 short, subequal and segment 3 very long, (not segment 1 shorter than 2 and segment 3 only slightly longer than 3); (3) the spurs on legs are 1:4:4, (not 2:4:4); the Subcosta (Sc) on the forewing are forked at the end, (not united with R1 apically); (4) the nygma of the thyridial cell is at about middle of the cell, (not at the distal end).