Moustique vs. maringouin
The French language contains varied regional vocabulary for many animals, including the insect commonly known in English as the mosquito. In particular, moustique and maringouin are both terms used to refer to mosquitoes, however, they may carry different connotations or be more common in certain regions.
Moustique
A2A generic term for mosquito used widely in the French-speaking world. It's the most commonly used term in France.
Les moustiques sont très actifs le soir.
(Mosquitoes are very active in the evening.)
J'ai acheté une moustiquaire pour éviter les piqûres de moustiques.
(I bought a mosquito net to avoid mosquito bites.)
Le chant du moustique m'empêche de dormir.
(The mosquito's buzzing keeps me from sleeping.)
Maringouin
B2A term specifically used in some regions, particularly in Quebec and parts of the Caribbean, for a mosquito. It's less common outside these areas.
Les maringouins sont particulièrement nombreux cette année.
(The mosquitoes are particularly numerous this year.)
Le camping était agréable malgré la présence des maringouins.
(Camping was enjoyable despite the presence of mosquitoes.)
Mets de l'anti-moustique pour te protéger des maringouins.
(Put on some mosquito repellent to protect yourself from mosquitoes.)
Summary
While moustique is the standard word for a mosquito across French-speaking regions, maringouin is a regionalism primarily used in Quebec and parts of the Caribbean. Both words refer to the same insect that is known for its biting and potential to transmit diseases. The choice between moustique and maringouin may depend on geographical location or personal preference within specific areas of the French-speaking world.