Instar
Videos
An instar is a developmental stage of arthropods, such as insects, which occurs between each moult until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a n
Imperial moth (Eacles imperialis) development from egg to pupa, showing all the different instars
Two instars of a caterpillar of Papilio polytes
Ecdysis
Videos
Ecdysis is the moulting of the cuticle in many invertebrates of the clade Ecdysozoa. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a
Instar
…An instar ( ; from Latin īnstar 'form, likeness') is a developmental stage of arthropods, such as insects, which occurs between each moult (ecdysis) until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a new form. Differences between instars can…
Adult Rhopalomyia solidaginis fly, emerging from pupal case
Moulting (ecdysis) in southern hawker, Aeshna cyanea
Female crab spider Synema decens, teneral after final ecdysis, still dangling from drop line, about to be mated, opisthosoma still shrunken