Diversity of Pollinator Insects in The Vegetable Plantation in Kecamatan Dolat Rayat Febrina Suci Ramadhoni 1 , Syarifuddin 2 , Mufti Sudibyo 3 {febrinasuci.fs@gmail.com 1 , syarif.ecol@yahoo.com 2 , muftisudibyoo@unimed.ac.id 3 } Postgraduate Student of Biology Education Program, Universitas Negeri Medan Jalan Willem Iskandar/Pasar V, Medan 2022, Indonesia 1 , Lecture of Biology Education Program, Universitas Negeri Medan Jalan Willem Iskandar/Pasar V, Medan 2022, Indonesia 2,3 Abstract. The presence of insect pollinators plays an important role in the pollination process. The purpose of this study is to analyse the diversity of insect pollinators in vegetable plantations in 3 villages at Kecamatan Dolat Rayat, Kabupaten Karo. Sampling was carried out on five types of plantation: bean plant, chayote, peas, eggplant, and chilli. At each sampling point, five plots of 1,2m x 10m were established with a spacing of 2m between the plots. Insect pollinator observation technology using sampling scan method combined with insect net. The results of the study identified 7 families of 10 species and 880 individuals. Diversity index that used is The Shannon-Weiner with H’ = ± 1,24 in the villages. The most prevalent order was Apidae, and the most abundant species was Apis cerana. The greatest variety of pollen hybrids was found on chayote plantations. Keywords : Pollination; Fertilization; Shannon-Weiner index. 1. Introduction A pollinator is a insect that goes about for the purpose of joining dust to the pistil [1]. Fertilization is the method involved with moving dust from the anther to the pistil (disgrace) [2]. The insects engaged with fertilization predominantly comprise of Hymenoptera (subterranean insects and honey bees), Coleoptera (beets), Lepidoptera (butterflies and moths) and Diptera (flies) [3]. These insects assist with pollinating both wild and rural blooming plants. The job of insect fertilization for people incorporates expanding agrarian creation and keeping up with normal plants [4]. Tropical plants are overwhelmingly over 90% pollinated by pollinators and 75% by insects [5]. Insect pollinators are fundamental since some plant species can't self-fertilize (self-fertilization). Fertilization happens on the grounds that pollinating insects are drawn to the plant's blossoms. The fertilization cycle starts with the pollinating insect roosting on a blossom, then, at that point, contacting the dust, and the dust sticks to the insect's feet, and as the insect moves to search out the honey quintessence of another bloom, it sticks to the insect's feet. Dust tumbles to disgrace [6]. Flowering plants contain sugar (nectar), which serves as food for pollinating insects. The presence of pollinating insects in blooming plants relies upon various factors, for example, blossom tone, bloom aroma, dust, nectar, bloom shape, blossom size, number of blossoms, and AISTEEL 2022, September 20, Medan, Indonesia Copyright © 2022 EAI DOI 10.4108/eai.20-9-2022.2324515