https://zenodo.org/record/7108662#.Y9jPU3bP1D8

rational for synonymisation:

HENDECASIS was described by Hampson (1896) on the basis of differences in the palpi, but it is clear his description of this genus was based only on a female with “palpi porrect, straight and nearly naked, about three times length of head” which is contrasted with TRICHOPHYSETIS with a description of a male: “palpi porrect, about twice as long as head, and thickly tufted with hair”. He also describes Hendecasis palpi as having maxillary palpi triangularly scaled, quoted also by Shibuya (1931). I have not been able to discern anything that matches that description, here again the distinction appears to be between sexes or differences at specific level. Differences in venation are minor whereas the general plan of the genitalia is consistent among species, hence HENDECASIS is placed in the synonymy of TRICHOPHYSETIS.