black fly

• 一种黑色的小型叮咬蝇，常出现在河流和溪流附近，以叮咬疼痛和成群飞舞而闻名。也泛指蚋科昆虫。

A small, dark-colored biting fly, often found near rivers and streams, known for its painful bite and swarming behavior.

1. Small biting insectB2formal

   A small, dark-colored fly of the family Simuliidae, known for biting and sucking blood, often found near fast-flowing water.

   蚋

   • Black flies are a common nuisance near rivers in the summer.
   • The hikers wore long sleeves to protect against black flies.
   • Black fly bites can cause severe itching and swelling.

2. Common name for a type of insectA2informal

   Any of various small, dark-colored flies, often used informally to refer to biting midges or gnats.

   蚋

   • We were swarmed by black flies during the picnic.
   • Black flies are especially active at dawn and dusk.
   • I hate it when black flies get in the house.