Thysanactis Regan [C. T.] & Trewavas [E.] 1930:57 Fem. Thysanactis dentex Regan & Trewavas 1930. Type by monotypy. •Valid as Thysanactis Regan & Trewavas 1930 -- (Morrow in Morrow & Gibbs 1964:446 [ref. 6962], Kawaguchi & Moser 1984:171 [ref. 13642], Fujii in Masuda et al. 1984:51 [ref. 6441], Fink 1985:11 [ref. 5171], Paxton et al. 1989:203 [ref. 12442], Harold 1999:1913 [ref. 24741], Harold 2003:910 [ref. 27001], Paxton et al. 2006:451 [ref. 28995]). Current status: Valid as Thysanactis Regan & Trewavas 1930. Stomiidae: Melanostomiinae.