Translation

The Japanese word for "Mosquito" is ka カ.

Romaji ka
Hiraganaか
Katakanaカ
Kanji 蚊
School Level 中

Loan-word

The word "Mosquito" katakanized would be mosukīto モスキート.
Romaji mo su kii to
Katakanaモスキート
Hiraganaもすきーと

Trivia

  • ga ガ means "Moth" in Japanese.

Further Reading

Wikipedia: Mosquito (蚊)