Chilli thrips; Yellow tea thrips - Scirtothrips dorsalis

EEffective: August 18, 2010 - December 31, 2011
Resources: Pest Tracker
Screening Aids:
Taxonomic Position: Thysanoptera : Thripidae
Pest Type: Insects
Pest Code (NAPIS): IMOCQHA
No manual – See Host Matrix
These Approved Methods are appropriate for:
Human and Animal Pathogens Transmitted:
Not known to transmit any human or animal pathogens.
Plant Pathogens and Organisms Vectored:
Groundnut chlorotic fan-spot virus, Groundnut yellow spot virus (YSV), Tobacco streak virus (TSV), Tomato spotted wilt tospovirus (TSWV), Peanut bud necrosis virus (PBNV), Peanut chlorotic fan virus (PCFV), Peanut yellow spot virus (PYSV), and possibly Groundnut bud necrosis virus (Campbell et al.; Hodges et al., 2005; Kolke et al., 2008)
Survey
Approved Method(s):
Method Product Name / Instructions NAPIS Survey Method
Visual Visually inspect hosts for damage symptoms. Collect terminal foliage and rinse with 70% ethanol. Collect ethanol and thrips for identification. 3031 - General Visual Observation
Method Notes:
Sticky traps are not to be used for Chilli thrips surveys. Removing specimens for identification from the traps is nearly impossible.
Identification


ID/Diagnostic: Morphological

Morphological: Identification of adults and late instar larvae is possible with some expertise/experience in Scirtothrips/ Thysanoptera. As per NIS, States may go to reliable entomologists/taxonomists for identification. The Chilli Thrips Task Force has named G.B. Edwards, Gillian Watson, Jack Reed, and Cindy McKenzie as approved taxonomists for chilli thrips identification.
Mistaken Identities:
Other thrips families and genera
Frankliniella schultzei, S. aurantii, and S. oligochaetus.
References
  1. Campbell, L. R., Robb, K. L., & Ullman, D. E. The Complete Tospovirus Resource Page! - Currently recognized tospoviruses.
  2. CSIRO. World Thysanoptera. [visual glossary, specimen preparation methodologies, links to on-line resources, and numerous Lucid keys.]
  3. Hoddle, M. S. et al. 2008. Thrips of California (LUCID 3)
  4. Koike, S. T., Davis, R. M., Subbarao, K. V., & Falk, B. W. 2008. How to Manage Pests: UC Pest Management Guidelines. Peppers - Tomato Spotted Wilt Virus (Publication 3460). University of California, Agriculture and Natural Resources, Statewide IPM Program.