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A small proportion of the species are serious pests of commercially important crops. Some of these serve as vectors for over 20 viruses that cause plant disease, especially the Tospoviruses. Many flower-dwelling species bring benefits as pollinators, with some predatory thrips feeding on small insects or mites. In the right conditions, such as ...
The black bean aphid is a small, soft-bodied (meaning that the exocuticle part of the exoskeleton is greatly reduced) [5] insect that has specialised piercing and sucking mouthparts which are used to suck the juice from plants. This aphid is usually seen in large numbers and is a tiny, plump insect about two millimetres long with a small head ...
Manduca quinquemaculata, the five-spotted hawkmoth, is a brown and gray hawk moth of the family Sphingidae.The caterpillar, often referred to as the tomato hornworm, can be a major pest in gardens; they get their name from a dark projection on their posterior end and their use of tomatoes as host plants.
These bugs are a common garden insect which may damage a wide variety of crops including cotton, peaches and tomatoes, and seeds such as beans, black-eyed peas and sorghum. [2] Like other bugs L. phyllopus suck juices from plants by puncturing them with their sucking mouth parts, making them resistant to ingested pesticides.
Agrotis ipsilon, the dark sword-grass, ipsilon dart, black cutworm, greasy cutworm or floodplain cutworm, is a small noctuid moth found worldwide. [2] The moth gets its scientific name from black markings on its forewings shaped like the letter "Y" or the Greek letter upsilon . [ 3 ]
The coating of plants with honeydew can contribute to the spread of fungi which can damage plants. [118] [119] Honeydew produced by aphids has been observed to reduce the effectiveness of fungicides as well. [120] A hypothesis that insect feeding may improve plant fitness was floated in the mid-1970s by Owen and Wiegert.
This tiny insect causes damage to plants through feeding and transmitting plant diseases. The silverleaf whitefly feeds on its host plants by piercing the phloem or lower leaf surfaces with its mouth and removing nutrients. Affected areas of the plant may develop chlorotic spots, whither, or drop leaves.
Spraying the bugs' wings with a sticky substance before release may hinder their ability to fly. Some promising claims have been made that mesh or film that excludes ultraviolet of certain wavelengths from a greenhouse interfere severely with the ability of whitefly and various other greenhouse pests, to find their food plants.
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