Meloe laevis

Eggs normally hatch during the summer. What the larvae do upon hatching, as with all other Meloe species, is remarkable, in that they are hypermetamorphic. Tiny, freshly hatched larvae, bear the special name of "triungulin," or the more general term planidium. The triungulin emerges from the ground, climbs onto a flower, and waits for a bee. When a bee arrives the triungulin climbs aboard. If the bee is a male, the larva accompanies his bee until it mates, when the triungulin transfers onto the female. If the triungulin's transport bee was a female in the first place, however, unwittingly the female bee carries the larva to her underground nest. In the nest, the triungulin morphs into a grub-like "couch potato" and feeds on the bee's developing larvae as well as the food provided to the bee larvae. Eventually the developing larva metamorphoses into a pupa, which later metamorphoses into an adult. Each Meloe species may attack only a single bee species or genus, or various species.