Question

____flies with their mouths open to catch flies. They also take short
naps between flapping their wings​

Answer 1

Answer:

MAYFLIES

Explanation:

They are unique among insect orders in having a fully winged terrestrial preadult stage, the subimago, which moults into a sexually mature adult, the imago. Mayflies "hatch" (emerge as adults) from spring to autumn, not necessarily in May, in enormous numbers.