alder fly

Thân thiện

A fisherman ties an alder fly to his fishing line.

Definition

1. Noun:
   • A dark-colored insect whose larvae are aquatic and predaceous: An "alder fly" is a type of insect, typically dark in color, known for its life cycle where the immature stage (larva) lives in water and hunts other small aquatic organisms for food.

Usage Examples

• Noun:
  • We found an alder fly resting on the vegetation near the stream. (We found this specific type of insect near the water.)
  • The presence of alder fly larvae indicates good water quality in the pond. (The aquatic young of this insect are a sign of a healthy aquatic environment.)

Advanced Usage

• In scientific or ecological contexts: The term is used precisely to refer to insects of the family Sialidae within the order Megaloptera.
  • The study focused on the life cycle of the alder fly, Sialis lutaria.

Variants and Related Words

• Alderfly: A common alternative spelling, written as one word.
• Sialid: A scientific term for an insect belonging to the family Sialidae, which includes alder flies.

Synonyms

• Fish fly: A common name for a related insect in the same order (Megaloptera), though typically referring to insects in the family Corydalidae, which are often larger.

Notes on Meaning

• The term specifically denotes the adult insect. The aquatic larval stage is typically referred to as an "alder fly larva" or by its scientific name.
• It is not a true fly (order Diptera) but belongs to a different insect order (Megaloptera).

Học thuật

Noun

1. dark-colored insect having predaceous aquatic larvae

Từ đồng nghĩa

• alderfly
• Sialis lutaria