Grub and Bot Pictures

Late instar warble fly larva

Life cycle of the horse stomach bot fly.

There is also a human bot fly and you don't want any.  Avoid collecting adults by hand.  Incidentally, Dr. L. H. Dunn in the 1930`s successfully reared several larvae of the human bot fly in his arm! This really requires more dedication than the author has; however, if you are interested in reading about this, it occurs in Psyche, vol 28, pages 327-342.