For flower thrips on gladiolus: Mix 1 tablespoon Lysol household cleaner with 1 gallon water. You can plant various flowers to attract beneficial insects that are natural predators to thrips. The western flower thrips (Frankliniella occidentalis) develops in six stages: egg, two larval instars, prepupa, pupa, and finally the adult insect. This species is a key pest in the greenhouse production of flowers and vegetables. Females are about 1/25 of an inch long and have many color forms. In the following decades it has spread with the horticultural trade throughout North America and the world (Kirk and Terry 2003; CABI 2014). WFT feed on plant tissue by rasping and sucking sap (Childers and Achor, 1995). In spring, there is an increase in the number of flower thrips on alfalfa, weeds, ice plant, and other vegetation and move from these hosts when they are cut, stop flowering, or dry up. Thrips are small, slender insects, with four long, narrow wings fringed with hairs. Western flower thrips attack a wide range of plants including: carnations, chrysanthemums, corn, cotton, cucumbers, eggplants, gerberas, grapes, impatiens, melons, peaches, peanuts, peas, and peppers. Spray applications are only effective when thrips are actively feeding as larvae or adults. They are inserted into the plant tissue with a saw-like ovipositor. They are generally white when young but brown or black when mature. %PDF-1.4 %���� ), a small black and white-colored bug with piercing-sucking mouthparts, that can kill thrips larvae and adults. Adults have 4 feathery wings and vary in color from yellow to dark brown; nymphs are … At 25°C, it takes 13 days. Western flower thrips Frankliniella occidentalis (Thysanoptera: Thripidae) Description: Western flower thrips are slender, very small insects, about 0.03 inch long when mature. There are thousands of species of thrips which feed on a wide variety of plants and insects. Western flower thrips. Western flower thrips, Frankliniella occidentalis Pergande is a commonly encountered and economically important insect pest of greenhouses. Only those biological controls that target the adult female have any chance of reducing damage, and they must respond quickly when adult female thrips first move into the blossoms. 0000043091 00000 n Western flower thrips (WFT), Frankliniella occidentalis, is still one of the most destructive insect pests of commercial greenhouses feeding on a wide variety of horticultural crops. Adults have two sets of narrow, clear, nearly veinless wings that have dark, hairy, fringes. However, the primary damage caused by WFT is the transmission of Tomato spotted wilt virus (TSWV) to tomato plants. As the name suggests the wings of these thrips have dark and light bands, and can be easily distinguished from the western flower thrips. According to CABI (2014), its current distribution includes: Asia: China, Iran, Japan, Republic of Korea, Kuwait, Malaysia, and Sri Lanka Africa: Algeria, Kenya, Morocco, Reunion, Swaziland, Tunisia, Uganda, and Zimb… In sweet pepper, egg hatch gives the leaves a speckled appearance, with the degree of speckling corresponding to the number of hatched eggs. The thrips don't like the cold and will rest in a hidden place at low temperatures. 0000018808 00000 n Adult western flower thrips are minute, slender-bodied insects possessing two pairs of long, narrow wings, the margins of which are fringed with long hairs. So there's no time to lose! Adults have 4 feathery wings and vary in color from yellow to dark brown; nymphs are … 0000005910 00000 n Adults have feathery wings and vary from yellow to dark brown. Adult male WFT are light yellow, while adult female WFT are a little larger than the males and vary in color from light yellow, yellow with brown splotches, to dark brown. Western Flower Thrips (Frankliniella occidentalis) are very small and slender insects with fringed wings and are a common insect found in greenhouses and gardens.Thrips range in color from translucent white to yellow to green to black and brown. Second instar nymph 5. 2. It remained confined to western North America (west of 100°W longitude) until the 1960s. These vary from pale yellow thorax and abdomen to yellow thorax and dark abdomen to … The western flower thrips (WFT), Frankliniella occidentalis Pergande is an important pest of tomato plants, causing direct and indirect damages. However, western flower thrips is the predominant species and the most difficult to control. 0000007521 00000 n 0000007081 00000 n Western flower thrips, Frankliniella occidentalis, are likely the most serious pest of greenhouse crops in the world. These nymphs look like their parents but wingless. The western flower thrips, for example, doubles its population in four days. The babies of the western flower thrips also called as nymphs. trailer <]/Prev 532517>> startxref 0 %%EOF 105 0 obj <>stream Description - Adult: male 0.9 to 1.1 mm long, female 1.3 to 1.4 mm. Thrips has an additional weapon in its arsenal: the pupae are often in the soil. Females puncture the fruit … Certain biological attributes of this insect predispose it to be a direct pest across a wide range of crops. Direct damage results in lost yield and/or inferior prices, as damage is unsightly - common in roses, strawberries, beans, capsicum and cucumbers. Females are about 1/25 of an inch long and have many color forms. Because the immature stages usually remain on one plant and do not move to other plants, most of the spread of the virus is by the adult stage as they fly or are carried by wind currents. 0000015122 00000 n Adult WFT are about 1/16th of an inch long, and are long and narrow shaped, like grass seed. Natural infestations typically control the F. 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