HORTICULTURE

Detailed explanation-1: -On hatching, first-instar larvae are roughly 2 mm long, growing to about 5 mm before shedding their skin. The second instar larvae grow to around 10 mm before they shed their skins to become third-instar larvae. Third-instar larvae grow to between 15 mm and 20 mm before wandering off as pre-pupae.

Detailed explanation-2: -The house fly has a complete metamorphosis with distinct egg, larval or maggot, pupal and adult stages.

Detailed explanation-3: -Fruit fly larvae undergo molting stages known as instars, during which the head, mouth, cuticle, spiracles and hooks are shed. During the larva’s third instar, it crawls to a drier area to pupate. The pupa case is formed from the larval skin as it darkens and develops a hard surface.

Detailed explanation-4: -The third instar, which is the ultimate stage of larval development, and has prolonged duration, is the stage most often used for identification, if the appropriate taxonomic key is available. The adult fly, reared from the third instar, also is often used to confirm identity.

Detailed explanation-5: -The first larval instar stage begins at hatching and it ends at the first larval molt. In holometabolous insects, the last instar is a phase from final molt to either prepupal or pupal stage or the eclosion of an imago in hemimetabolous insects. The period of growth is species specific and is fixed for every instar.