Npauj npaim tseeb yog qee tsev neeg ntawm npauj npaim. Lawv yog cov me me mus rau nruab nrab loj thiab muaj nqaim, fringed tis. Cov npauj tiag tiag muaj atrophied proboscises. Qee tus ntawm lawv yog cov kab mob loj ntawm cov khoom lag luam xws li npauj txiv hmab txiv ntoo qhuav los yog npauj hmoov. Lwm yam kab mob uas peb xav tau, xws li cov kab npauj khaub ncaws lossis kab npauj cork. Ntau tus neeg kuj hais txog npauj li npauj, piv txwv li butterflies uas feem ntau so thaum nruab hnub.
Raws li butterflies, npauj muaj tis nrog nplai. Txawm li cas los xij, cov tis pem hauv ntej yog nqaim heev thiab pw ze ntawm lub cev. Lub hind tis yog dav dua thiab folded hauv qab. Nws tsuas yog thaum npauj ya thiab nthuav tawm nws tis uas koj pom tau tias nws yog npauj npaim. Cov larvae hatch los ntawm cov qe. Cov kab ntsig no qee zaum ua rau muaj kev puas tsuaj loj heev. Tias yog vim li cas tus tswj kab tsuag feem ntau yuav tsum tau hu kom tshem tawm lawv.