To the economic entomologist the ability to breed these monsters in captivity is one of the most important factors in studying out their life histories, as they are called, their various stages, the plants they feed on, their habits of moulting, of breeding and of feeding their young.
ONE OF THE WORST OF THE ROBBER FLIES
(Deromyia)
This creature is very savage and pounces upon even large sized insects, paralyzing them instantly by a sting of its poisoned beak.
