Of the approximately 15 species found in ornamentals in greenhouses , the most common species are citrus mealybug and long-tailed mealybug. Their host range is extensive and includes most foliage plants grown in plantscapes or homes; they have even been found on vegetable crops such as cucumber.. Other species that may occur are obscure, citrophilus, grape and ground mealybugs. Mealybugs damage plants by sucking the sap. Their feeding causes distortions, stunting and yellowing of foliage. They also produce honeydew, which supports the growth of unsightly sooty molds on leaves and attracts ants. Some mealybug species can also transmit viruses.