noun. small blackish stout-bodied biting fly having aquatic larvae; sucks the blood of birds as well as humans and other mammals.
- black fly
- genus Simulium
noun. blackish aphid that infests e.g. beans and sugar beets.
- Aphis fabae
- bean aphid
- genus Aphis
Sentences with blackfly
1. Noun, singular or mass
Look for tiny black insects and spiral formations of eggs on the undersides of the lemon tree’s leaves to identify a blackfly infestation.
2. Verb, base form
Black aphids or blackfly infest the young leaves and flower shoots of succulents.