Added in 2000 – Deleted in 2001 Reasons for deletion



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  • EPPO region

Added in 2000 – Deleted in 2001

Reasons for deletion

Doubts were raised about the severity of damage and it was concluded that the pest Thrips parvispinus should not be considered as a threat. In 2001 it was therefore removed from the EPPO Alert List.




Thrips parvispinus (Thysanoptera: Thripidae) - A south-east Asian thrips

Why The NPPO of UK suggested that Thrips parvispinus could be added to the EPPO Alert List. This Asian species was recently reported as damaging Gardenia plants growing in 2 glasshouses near Volos, in Greece. Intercepted (as T. taiwanus) by the Netherlands in 1996 on a consignment of Gardenia cut flowers from Indonesia.

Where EPPO region: Greece (isolated findings) ; Asia: Indonesia (Java), Malaysia, Singapore, Taiwan, Thailand ; Oceania: Australia, Solomon Islands.

On which plants T. parvispinus is considered as a polyphagous species. It is reported as a major pest of Capsicum in Java, and of vegetable crops in Thailand. In Malaysia, it is a pest of papaya.

Damage Direct feeding damage. In Malaysia, feeding damage on papaya is associated with secondary attacks by the saprophytic fungus Cladosporium oxysporum (causing bunchy and malformed top of papaya). Extensive leaf damage was observed on Gardenia plants in Greece. Recorded as a vector of tobacco streak ilarvirus in transmission studies from infected tomato pollen to seedlings of Chenopodium amaranticolor.

Note Taxonomy may need further clarification, but it is now considered that T. taiwanus and Isoneurothrips jenseni are synonyms of T. parvispinus, and that T. compressicornis is a distinct species.

Pathway Plants for planting, cut flowers and branches from countries where T.parvispinus occurs.

Possible risks T. parvispinus can be spread by movement of infested plants (at least two examples on imported Gardenia plants). Data is lacking on its biology and potential of establishment in the EPPO region. But as a tropical and polyphagous species, it could present a risk to protected ornamental and vegetable crops. Chemical control is possible, but is probably difficult as for many other thrips species.

Source(s) NPPO of UK, 2000-01.

Bansiddhi, K.; Poonchaisri, S. (1991) Thrips of vegetables and other commercially important crops in Thailand. AVRDC Publication. No. 91-342 (abst.).

Klose, M.J.; Sdoodee, R.; Teakle, D.S.; Milne, J.R.; Greber, R.S.; Walter, G.H. (1996) Transmission of three strains of tobacco streak ilarvirus by different thrips species using virus-infected pollen. Journal of Phytopathology, 144(6), 281-284.

Lim, W.H. (1989) Bunchy and malformed top of papaya cv. Eksotika caused by Thrips parvispinus and Cladosporium oxysporum. MARDI Research Journal, 17(2), 200-207 (abst).

Vos, J.G.M.; Frinking, H.D. (1998) Pests and diseases of hot pepper (Capsicum spp.) in tropical lowlands of Java, Indonesia. Journal of Plant Protection in the Tropics, 11(1), 53-71.

EPPO RS 2000/061



Panel review date 2001-01 Entry date 2000-04
Каталог: QUARANTINE -> Alert List -> deleted%20files -> insects
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