Introduction: Many aphid species exhibit a life cycle in which parthenogenetic viviparous generations are followed by a single sexual generation and such species are called holocyclic. However, many aphid species have lost the sexual phase of their life cycle and are termed as anholocyclic. These tiny insect pests multiply rapidly through a series of parthenogenetic generations and in the sexual phase of their life cycle, genetic recombination’s occur. Mating behavior in aphids has been studied only in a few species. In aphids, it has been reported that oviparous females attract winged males through releasing pheromones produced by their hind tibiae (Dawson et al., 1990; Hardie et al., 1996; and Pickett et al., 1992). Materials and methods: Mating behavior of Cavariella aegopodii was studied under laboratory as well as field conditions. To observe pre-copulation, copulation and post copulation behavior of males and oviparae, continuous observations were made.  Four different sets of experiment were conducted to study the mating behavior of Cavariella aegopodii. These sets were, one male and one ovipara sexual, one male and three oviparae sexual, three males and one ovipara sexual and one male, one virgin ovipara sexual and other ovipara sexual from set 3. The photographs of different morphs and their stages were taken with the help of digital still camera SONY cyber-shot DSC-W35 7.2 mega pixels. Results: Mating behavior was studied in Cavariella aegopodii under laboratory conditions as well as in nature. To observe pre-copulation, copulation and post-copulation behavior of males and oviparae, continuous observation were made with the help of magnifying lens both in the field and under laboratory conditions.