Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
larvālis (larŭālis), e, adj. [larva], like a ghost, ghostly (post-Aug.): habitus, Sen. Ep. 25; so, si larvali habitu processeris, Lex ap. Paul. Sent. 3, 4, b, 2: macies larŭalis, Auct. Priap. 32, 13.