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Scirtothrips dorsalis (Chilli thrips)

Scirtothrips dorsalis (Chilli thrips). Joe Chamberlin Matt Ciomperlik Amanda Hodges Jeff Michel Cindy McKenzie S. Ludwig L.S. Osborne Cristi Palmer C. Regelbrugge L. Schmale D. Schuble. S. dorsalis. Synonyms: Chilli, Castor, Berry, Assam and Yellow Tea Thrips Host Plants:

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Scirtothrips dorsalis (Chilli thrips)

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  1. Scirtothripsdorsalis (Chilli thrips) Joe Chamberlin Matt Ciomperlik Amanda Hodges Jeff Michel Cindy McKenzie S. Ludwig L.S. Osborne Cristi Palmer C. Regelbrugge L. Schmale D. Schuble

  2. S. dorsalis Synonyms: Chilli, Castor, Berry, Assam and Yellow Tea Thrips Host Plants: Over 150 host plants including banana, beans, chrysanthemum, citrus, corn, cotton, cocoa, eggplant, ficus, grape, grasses, holly, jasmine, kiwi, litchi, longan, mango, onion, peach, peanut, pepper, rose, soybean, strawberry, tea, tobacco, tomato, viburnum, etc.

  3. ECONOMIC IMPORTANCE Major pest of: • strawberries in Queensland, Australia • tea in Japan and Taiwan • citrus in Japan and Taiwan (Chiu et al. 1991, Tatara and Furuhushi 1992, Tschuchiya et al 1995) • cotton in the Ivory Coast (Bournier 1999) • soybeans in Indonesia (Miyazaki et al.1984) • chillies and castor bean in India • peanuts in several states in India (Mound and Palmer 1981). • Ananthakrishnan (1984) also reports damage to the following hosts: cashew, tea, chillies, cotton, tomato, mango, castor bean, tamarind, and grape. • Rose in India

  4. Is Scirtothrips dorsalis a Serious Economic Pest for the US? Assuming an overall U.S. crop yield loss from Chilli Thrips of 5 percent the total crop value loss would equal $3.0 billion (primary hosts $583 million and secondary hosts $2.43 billion). Assuming an overall U.S. crop yield loss from Chilli Thrips of 10 percent the total crop value loss would equal $5.98 billion (primary hosts $1.2 billion and secondary hosts $4.78 billion).

  5. Identification http://mrec.ifas.ufl.edu/lso/DOCUMENTS/identification%20aid.pdf

  6. Chilli Thrips-Adult

  7. Chilli Thrips-Adults Male and Female (larger)

  8. Thrips-Adults Western Flower thrips Chilli thrips

  9. Western Flower Thrips Adult

  10. Chilli Thrips-Adult (recently emerged)

  11. Chilli Thrips-Adult

  12. Chilli Thrips-Adults

  13. Chilli Thrips (mixed stages) 2nd instar 1st instar

  14. Egg Blister

  15. Chilli Thrips-Adults Egg Blister 

  16. Embryo Removed from Egg Blister Egg Blister  Embryo 

  17. 1st Instar Larva

  18. Chilli Thrips 1st Instar Larva Egg to 2nd Instar F° Days 60.8 17.2 68 12.0 77 7.6 86 5.8

  19. Chilli Thrips 2nd Instar Larva F° Days 60.8 12.4 68 8.1 77 6.4 86 4.4

  20. Chilli Thrips Pre-Pupa & Pupa F° Days 60.8 9.9 68 6.5 77 4.4 86 3.7 Pre-pupa Pupa

  21. DEVELOPMENT (DAYS)EGG TO EGG

  22. Over Wintering of Pupae Grapes 64.4% in liter 16.2% in branch zone 12.5% in soil 6.9% leaf zone Okada & Kudo 1982

  23. Scouting

  24. Scouting

  25. Scouting

  26. Damage

  27. Hosts Acanthaceae Strobilanthes dyerianus Mast. Araliaceae Hedera helix L. Berberidaceae Mahonia bealei Caprifoliaceae Viburnum suspensum Combretaceae Conocarpus erectus Laguncularia racemosa (L.) Gaertn. f. Compositae Gerbera jamesonii H. Bolus ex Hook. f. Ericaceae Rhododendron spp. Euphorbiaceae Ricinus communis Illiciaceae Illicium floridanum Ellis Moraceae Ficus elastica

  28. Hosts Oleaceae Jasminum sambac (L.) Ait. Ligustrum japonicum Thunb. Pittosporaceae Pittosporum tobira (Thunb.) Ait. f. Rosaceae Raphiolepsis indica Rhaphiolepis umbellata (Thunb.) Mak. Rosa sp. Rubiaceae Gardenia jasminoides Richardia brasiliensis Gomes

  29. Hosts Rutaceae Citrus sp. Murraya paniculata (L.) Jack Solanaceae Capsicum annuum L. Capsicum frutescens L. Capsicum sp.

  30. Hosts Amaranthaceae Celosia argentea L. Araceae Philodendron sp. Araliaceae Schefflera arboricola (Hayata) Merrill Balsaminaceae Impatiens walleriana Hook. f. Compositae Coreopsis sp. Compositae Zinnia sp. Euphorbiaceae Poinsettia pulcherrima Graham Gentianaceae Eustoma grandiflorum (Raf.) Shinn. Geraniaceae Pelargonium x hortorum Bailey Hamamelidaceae Loropetalum chinense (R. Br.) Oliver

  31. Hosts Labiatae Plectranthus scutellarioides (L.) R. Br. Salvia sp. Leguminosae Phaseolus vulgaris L. Lythraceae Cuphea sp. Marantaceae Stromanthe sanguinea (Hook.) Sonder Onagraceae Gaura lindheimeri Rubiaceae Pentas lanceolata (Forssk.) Deflers Scrophulariaceae Antirrhinum majus L. Solanaceae Petunia sp. Verbenaceae Duranta erecta Glandularia x hybrida (Grön. & Rüm.) Neson & Pruski

  32. Damaged Flower Bud and Leaves Mannion Photos: L. Osborne, UF-IFAS

  33. Comparison of damaged and normal leaf Normal new growth Damaged new growth Mannion Photos: L. Osborne, UF-IFAS

  34. Chilli Thrips - rose

  35. Ligustrum

  36. Pittosporum

  37. Ligustrum

  38. Ligustrum

  39. Chilli Thrips-pepper

  40. Chilli Thrips-pepper

  41. Chilli Thrips-Indian Hawthorn

  42. Chilli Thrips-Schefflera

  43. Chilli Thrips-Schefflera

  44. Chilli Thrips- Schefflera

  45. Chilli Thrips-strawberry

  46. Sweet Viburnum

  47. ManagementChemical See Chilli Thrips Management: Osborne & Ludwig http://www.mrec.ifas.ufl.edu/lso/THRIPS/CHILLIWEB2/chilli-doc/CHILLI%20THRIPS%20Management.pdf

  48. 100% Reliance on Pesticides = RESISTANCE

  49. What Can Growers Do? • Pay attention to information distributed by SAF, the propagators, media, pesticide companies and/or University and ARS scientists. • Implement INSECTICIDE RESISTANCE MANAGEMENT PROGRAMS IRM

  50. ROTATE ROTATE ROTATE

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