Abstract. Kuantan Singingi District is one of the endemic areas of filariasis in Riau Province. Mass treatment activities have been done, but the results of TAS-1 in 2016 with Brugia Rapid Test still found 11 positive children, this condition indicates that there is still new transmission in Kuantan Singingi Regency. The purpose of this study was to determine the mosquito species which potentially become vector filariasis - and to determine the types of potential breeding habitats for mosquito larvae. This research was done in Pulau Panjang Cerenti Village, Cerenti District and Sukadamai Village, Singingi Hilir District in September and November 2017. Catching mosquitoes held for 12 hours starting at 18.00 -06.00 WIB, using the modification of human landing collection double net method. Mosquito catching was done twice, with an interval of one month, at three points/locations for two consecutive nights. There were 24 species of mosquito caught in the two villages. The most dominant species in Pulau Panjang Village was Culex vishnui (54.89%) with indoor and outdoor MHD were 4.5; 16.08 species/man/hour, Sukadamai Village was Culex quinquefasciatus (95.42%) with indoor and outdoor MHD were 23.58; 19.08 species/man/hour. PCR examination results on mosquitoes caught in Sukadamai Village was found microfilarian DNA B. malayi in Cx.vishnui, so potentially become filariasis vector. Breeding habitats that are found mostly was fish ponds that are no longer used, puddles, and swamps. Riverfront habitats was only found in Pulau Panjang Village. Keywords: filariasis, Culex vishnui, potential vector, habitats, Kuantan Singingi Abstrak. Kabupaten Kuantan Singingi merupakan satu diantara wilayah endemis filariasis di Provinsi Riau. Kegiatan pengobatan massal telah dilakukan, namun hasil TAS-1 tahun 2016 dengan Brugia Rapid Test masih ditemukan 11 anak positif. Kondisi ini menunjukan bahwa masih terjadi penularan baru di Kabupaten Kuantan Sengingi. Tujuan penelitian ini untuk mengetahui spesies nyamuk yang berpotensi menjadi vektor filariasis dan mengetahui jenis-jenis habitat perkembangbiakan potensial bagi larva nyamuk. Pengumpulan data telah dilakukan di Desa Pulau Panjang Cerenti Kecamatan Cerenti dan Desa Sukadamai Kecamatan Singingi Hilir pada bulan September dan November 2017. Penangkapan nyamuk dilakukan selama 12 jam dimulai dari pukul 18.00 -06.00 WIB, menggunakan metode modifikasi human landing collection double net. Penangkapan nyamuk dilakukan sebanyak dua kali, dengan selang waktu satu bulan, pada tiga titik/lokasi selama dua malam berturut-turut. Spesies nyamuk yang tertangkap di dua desa sebanyak 24 spesies. Spesies yang paling dominan di Desa Pulau Panjang yaitu Culex vishnui (54,89%) dengan MHD di luar dan dalam rumah yaitu 4,5 dan 16,08 ekor/orang/jam, sedangkan di Desa Sukadamai yaitu Cx. quinquefasciatus (95,42%) dengan MHD di luar dan dalam rumah yaitu 23,58 dan 19,08 ekor/orang/jam. Hasil pemeriksaan PCR pada nyamuk yang tertangkap di Desa Sukadamai ditemukan DNA mikrofilaria B. malayi pada nyamuk Cx. vishnui sehingga berpotensi menjadi vektor filariasis. Habitat perkembangbiakan yang ditemukan sebagian besar adalah kolam ikan yang sudah tidak digunakan lagi, genangan air, dan rawa. Habitat tepi sungai hanya ditemukan di Desa Pulau Panjang. Kata Kunci: filariasis, Culex vishnui, vektor potensial, habitat, Kuantan Singingi
Abstract The study on mosquito diversity was conducted in Jagaraga Village, Buana Pemaca Subdistrict and Sukajaya Village, Buay Rawan Subdistrict of Ogan Komering Ulu Selatan Regency in 2017. This study aimed to analyze population density of mosquitoes, feeding habits and resting behavior of mosquito, and identify the types of potential /specific breeding habitat of mosquito larvae in OKU Selatan regency. Mosquitoes were collected during the night for 12 hours, started at 06.00 p.m. until 06.00 a.m. by human landing, resting, and cattle landing collection methods. The indoor density of mosquitoes ranged from 0.04-3.96 mosquitoes/person/hour with the highest density of 10,7 on Cx.tritaeniorhyncus. Species of mosquitoes collected in Sukajaya Village were more diverse than in Buana Pemaca Village. There were 12 species and the most dominant species was Cx. tritaeniorhyncus (68.09%), Breeding habitats were identified in rice fields, bricks pit, puddle marsh, and flow of rice fields. Abstrak Penelitian tentang keragaman nyamuk telah dilakukan Di Desa Jagaraga Kecamatan Buana Pemaca dan Desa Sukajaya Kecamatan Buay Rawan Kabupaten OKU Selatan pada tahun 2017. Penelitian ini bertujuan untuk mengetahui angka kepadatan populasi nyamuk yang tertangkap, menganalisis kebiasaan mencari makan danperilaku beristirahat masing-masing spesies nyamuk yang tertangkap serta mengetahui jenis-jenis habitat perkembangbiakan potensial bagi larva nyamuk yang ada di Kabupaten OKU Selatan. Penangkapan nyamuk dilakukan selama 12 jam dimulai dari pukul 18.00 WIB malam hingga pukul 06.00 pagi, menggunakan metode human landing collection, resting collection dan penangkapan di sekitar kandang ternak. Spesies nyamuk yang tertangkap 12 spesies dan yang paling dominan yaitu Culex tritaeniorhyncus(68,9%). Kepadatan nyamuk yang menggigit per orang per jam (MHD) di dalam rumah berkisar antara 0,04-3,96 ekor/orang/jam. Kepadatan rata-rata paling tinggi pada nyamuk Cx. tritaeniorhyncus 10,7 ekor. Habitat perkembangbiakan berupa sawah, lubang galian tanah liat untuk batu bata, kobakan, aliran sawah.
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