Though it might have been, the captain thought, nothing more ominous than the equivalent of a great swarm of harmless insects.

They are harmless insects; they neither bite nor sting.

Another example: Some harmless insects mimic other insects which are dangerous, or which taste foul.

Instead, they attract harmless or beneficial insects like moths and ladybugs.

Program for all ages highlighting the many unusual and harmless insects found in the county.

They are harmless insects which often mimic wasps and bees.

A harmless insect to humans without the ability to sting or build nests.

Their angry shouts were like the buzzing of harmless insects in her ears.

"The rest are nonbiting, male mosquitoes and other harmless night-flying insects."

These are harmless insects that sometimes inhabit dwellings.