KEKAYAAN JENIS DAN MUATAN POLEN LALAT SYRPHID (DIPTERA) DI KECAMATAN DRAMAGA DAN KEBUN PERTANIAN ORGANIK CISARUA

Abstract

Lalat syrphid (Diptera: Syrphidae) merupakan salah satu serangga pengunjung bunga yang memiliki cara terbang yang khas yaitu melayang diam di udara (hovering). Penelitian ini bertujuan menganalisis kekayaan jenis dan menghitung muatan polen lalat syrphid dari beberapa lokasi di Kabupaten Bogor, Jawa Barat. Pengamatan lalat syrphid dan koleksi spesimen lalat di Kecamatan Dramaga dan Kebun Pertanian Organik Cisarua. Spesimen lalat dipreservasi dalam alkohol 70% untuk proses identifikasi. Penghitungan muatan polen pada lalat melalui metode asetolisis. Hasil pengamatan didapatkan delapan spesies lalat syrphid, yakni Asarkina sp., Eristalis aeneus, Eristalis arbustorum, Eristalis tenax, Melanostoma sp., Episyrphus viridaureus, Platycheirus sp., dan Paragus sp.. Muatan polen tertinggi ditemukan pada Eristalis tenax (44.125 butir polen), diikuti E. arbustorum (5000 butir polen), Asarkina sp. (4500 butir polen), E. aeneus (1000 butir polen), Melanostoma sp., Episyrphus viridaureus (375 butir polen), dan Paragus sp. (250 butir polen). Spesies Platycheirus sp. yang teramati tidak terdapat polen pada tubuhnya.

Syrphid flies (Diptera: Syrphidae) are flower-visiting insects characterized by their distinctive hovering flight behavior. This study aimed to analyze the species richness and pollen load of syrphid collected from several locations in Bogor, West Java. Observations and specimen collections were conducted along Dramaga District and the Cisarua Organic Farm. The collected specimens were preserved in 70% alcohol for identification purposes. Pollen load was analyzed using the acetolysis method. Results showed that eight species of syrphid were found, i.e: Asarkina sp., Eristalis aeneus, Eristalis arbustorum, Eristalis tenax, Melanostoma sp., Episyrphus viridaureus, Platycheirus sp., and Paragus sp.. The highest pollen load was found in Eristalis tenax (44,125 pollen grains), followed by E. arbustorum (5000 grains), Asarkina sp. (4500 grains), E. aeneus (1000 grains), Melanostoma sp., Episyrphus viridaureus (375 grains), and Paragus sp. (250 grains). No pollen grains were found on Platycheirus sp.