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Two tailed mealy bug

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Two-tailed mealy bug is one of mealy bug species attacking wide range of hosts.

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Two tailed mealy bug

  1. 1. Two-tailed mealy bug -J.Delince BSA-11-409
  2. 2. Nomenclature • Scientific Name: Ferrisia virgata (or) Ferrisiana virgata • Common Name:Two tailed or Striped Mealy bug
  3. 3. Systematic position and related species • Kingdom : Animalia • Phylum : Arthropoda • Class : Insecta • Order : Hemiptera • Family : Pseudococcidae • Genus : Ferrisia • Species : F. virgata • Related species- Ferrisia malvastra, F.gilli, F.terrani
  4. 4. Distribution • Widely Distributed • Mostly in tropics and extends towards temperate regions. • Present in all countries • In India also it is seen in all tropical states.
  5. 5. Hosts • Attacks 150 genera from 68 families • Brinjal, Sapota , Pomegranate, avocado, banana, betel vine, black pepper, cassava, cashew, cauliflower, citrus, cocoa, coffee, cotton, custard apple, egg-plant, grape-vine, guava, jute, lantana, Leucaena, litchi, mango, oil palm, pigeon pea, pineapple, soybean and tomato. • Weed hosts are plants of Fabaceae and Euphorbiaceae.
  6. 6. Damage Symptoms • Presence of white mealy mass in under surface of leaves & on terminal shoots. • Yellowing of older leaves, withering of leaves • And it infests fruits which cause premature shedding • Honey dew secretion invites sooty mould. • Excess infestation results in wilting of the plant.
  7. 7. Vector • Cocoa swollen shoot virus • CocoaTrinidad virus
  8. 8. Insect description • Adult females are apterous oval, greyish yellow with 8 segmented antenna • Purplish dorsal longitudinal stripes along the back • Pair of wax filaments at the caudal end. • Nymphs are pale yellow to white • Adult males are tiny winged, less than 2mm
  9. 9. First and second instar
  10. 10. Life Cycle • Fecundity- 109-185 eggs/generation • Incubation period- 3-4 hours • Number of instars – 3(female), 4(males) • Development period-26-47 days(Female), 31-57(Male) • Longevity- 36-53 days(Females), 1-3days(Males)
  11. 11. Management • Collect and destroy the infested plant parts • Avoid flood irrigation • Remove alternate hosts • Prevent the movement of ants. • 1-2%neem oil, NSKE or FORS(25g/l) • Triazhophos 2 ml+ neem oil 5 ml/1, phosalone 35 EC 1.5 ml+ neem oil 5 ml/1. • Spray methyl demeton 25 EC or monocrotophos 36WSC 2ml/lit • Spray application of dichlorvas 76WSC 1ml/lit + fish oil rosin soap 25 g/lit • Release Cryptolaemus montrouzieri, Chilochorus sps beetles @ 10/tree or 5000beetles/ha • Other predators- Geocoris tricolor (the lygaeid bug), Pullus coccidivora and Nephus regularis. • Release of parasitoids Anagrus dactylopii, Gyanusoidea mirzai • Field release of green lace wing Chrysoperla carnea
  12. 12. References • www.csiro.au • http://www.ncipm.org.in/NCIPMPDFs/Publication/Bulletin- Mealybugs%20(English).pdf • http://agritech.tnau.ac.in/crop_protection/crop_prot_crop_insect- veg_brinijal.html • www.en.Wikipedia.org/Ferrisia_virgata • http://www.cabi.org/isc/datasheet/23981 -Invasive Species compendium • Agricultural insect pests of tropics and their control-Dennis S.Hill Pg-195, 2008
  13. 13. Thank you

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