Two tailed mealy bug
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The document summarizes information about the two-tailed mealy bug (Ferrisia virgata), including its: 1) Scientific and common names, taxonomic classification, and related species. 2) Wide distribution in tropical and temperate regions worldwide, including across India. 3) Host range of over 150 plant genera from 68 families, including various crops. 4) Damage symptoms of white mealy masses, yellowing and wilting leaves, and fruit shedding.
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EHTISHAM ALI HUSSAIN BAGF15E258 University College Of Agriculture,
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Two tailed mealy bug
- 2. Nomenclature • Scientific Name: Ferrisia virgata (or) Ferrisiana virgata • Common Name:Two tailed or Striped Mealy bug
- 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. 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. 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. 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.
- 8. Vector • Cocoa swollen shoot virus • CocoaTrinidad virus
- 9. 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
- 10. First and second instar
- 12. 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)
- 13. 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
- 15. 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
- 16. Thank you
Editor's Notes
- It has more than 20 synonymous scientific name.
- Commonwealth Scientific and Industrial Research Organisation (CSIRO)