adult pereiopods stemmata premaxillae dimorphism asexual Laurasiatheria sidq Ephemeroptera Papilionoidea vivipary HOXD gaster anQundr gnateaters prosencephalon mouthparts fletcheri Dasyuromorphia consisting hermaphrodites tadpole Plica thecae pupation heteromorphic moult larvae denticulate gametophyte larva phiQunda myelencephalon Fistulas Aglycyderini Psilotales jiba fere