These two endoderm-rudiments embryonic membrane formed by delamination from the blastoderm, ultimately grow together and give rise to the epithelium of the midwhile in a few insects, including the wingless spring-tails, the emgut.
Wingless insects, such as spring-tails and lice, make their appearance in the form of miniature adults.
She said they were working their tails off.
He pulled the shirt tails out of his pants and shucked it.
In insects so widely separated as bristle-tails and moths this occurs occasionally.