虫

1. Origins, structure, and basic meaning

• Structure: The spelling is 虫, read むし, and it is an everyday noun broadly covering small, noticeable bugs and insects.
• Basic usage: The basic sense of 虫 is not limited to the strict biological class of insects; it can be a general label for small crawling or flying creatures.

2. Common pitfalls and similar expressions

• Everyday category versus scientific class
  • Both examples use the form 虫. Like bug in English, it can be broad in everyday use and need not always be restricted to a scientific classification.
• One bug and a gathering of insects
  • 庭の葉に小さな虫が止まっている。 — A small bug is resting on a leaf in the garden.
  • 夜になると明かりの周りに虫が集まる。 — Insects gather around the light at night.