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Anopheles minimus

Asian hill-stream malaria mosquito
Vector Risk: Moderate
Genus: Anopheles

Anopheles minimus is a major malaria vector in the hilly foothills of South and Southeast Asia. Unlike its forest-dwelling cousin An. dirus, it prefers stream-side vegetation and hill villages, though the two overlap in many regions.

It is a flexible biter — feeding both indoors and outdoors, with peak activity in the early night hours (dusk to midnight). This mixed behaviour makes it vulnerable to both indoor residual spraying and bed nets, though outdoor exposure remains a risk factor in rural hill communities.

Anopheles minimus — photograph
Photo: James Gathany, CDC · Public Domain · 2005 · via Wikimedia Commons

Biting behaviour

Early-night biter (dusk to midnight). Feeds both indoors and outdoors. Primarily human-biting with some cattle feeding.

Habitat

Slow-moving, clean streams with grassy or rocky margins in hilly and foothill terrain. Breeds in stream-edge pools and seepages.

Diseases transmitted

Malaria

How to identify

Small, pale-bodied mosquito with a dark wing spotAnopheles 45-degree resting postureTypically found near flowing water and streamsBites both indoors and outdoorsMost active early in the night

Where found

Hill areas of India, Nepal, Bhutan, Bangladesh, Myanmar, Thailand, Laos, Vietnam, and southern China.

Precautions

WHO recommends insecticide-treated bed nets
CDC recommends antimalarial chemoprophylaxis in rural hill and stream-adjacent travel
CDC advises long-sleeved clothing from dusk
WHO recommends indoor residual spraying in village settings
WHO advises screened or air-conditioned accommodation at night
CDC notes mixed indoor/outdoor biting means both strategies matter

Recommended Protection

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WHO — Malaria vectors in AsiaCDC — Anopheles Mosquitoes

Countries where Anopheles minimus is relevant

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Vector information is sourced from WHO, CDC, and ECDC. Not medical advice. Personal decisions on repellents, vaccinations, or medication belong with a qualified travel health professional.

Anopheles minimus (Asian hill-stream malaria mosquito) — Mosquito Species Profile | Mozzwise