## Anopheles culicifacies — The Primary Rural Vector in India **Key Point:** Anopheles culicifacies is the principal vector for P. vivax transmission in rural and semi-urban areas across the Indian subcontinent, particularly in the plains and foothills. ### Anopheles Vectors in India — Epidemiological Distribution | Vector Species | Habitat | Primary Parasite | Geographic Distribution | Biting Habit | |---|---|---|---|---| | A. culicifacies | Rural, semi-urban plains | P. vivax (mainly) | Pan-India; plains and foothills | Endophilic; night feeder | | A. stephensi | Urban, semi-urban | P. falciparum, P. vivax | Cities; coastal areas | Endophilic; anthropophilic | | A. fluviatilis | Hilly, riverine areas | P. vivax, P. falciparum | Western Ghats, Himalayan foothills | Exophilic; zoophilic | | A. minimus | Hilly, forested areas | P. vivax | Northeast India; Himalayan region | Exophilic; zoophilic | **High-Yield:** A. culicifacies is responsible for the majority of malaria cases in rural India because: - Widespread distribution across plains - High vector density in agricultural areas - Strong preference for P. vivax - Endophilic behaviour (rests indoors after feeding) **Mnemonic:** **SCFM** = Stephensi (urban), Culicifacies (rural), Fluviatilis (hills), Minimus (northeast) **Clinical Pearl:** In rural India, malaria control programmes focus on indoor residual spraying (IRS) targeting A. culicifacies, as this species has strong endophilic tendencies. **Warning:** Do not confuse A. stephensi (urban vector) with A. culicifacies (rural vector) — this is a common trap in epidemiology questions. [cite:Park 26e Ch 7]
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