Discovery of the sugarcane thrips, Fulmekiola serrata, in sugarcane fields in Southern Florida

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1 Discovery of the sugarcane thrips, Fulmekiola serrata, in sugarcane fields in Southern Florida Felipe N. Soto-Adames Florida Department of Agriculture and Consumer Service Division of Plant Industry Gainesville, FL

2 Timeline of Discovery January 27 received from Julien Beuzelin (UF/IFAS, Belle Glade) requesting information about possible involvement of thrips on injured sugarcane leaves January 31 received specimens February 2 specimens identified as the sugarcane thrips, Fulmekiola serrata

3 Sugarcane Thrips Identification Living adults look black to the naked eye Mature larvae are yellow South African Sugarcane Research Institute

4 Sugarcane Thrips Identification In alcohol they are light brown Female Male

5 Sugarcane Thrips Identification Antennal Segments 3-4 light colored

6 Sugarcane Thrips Identification Long Pre-Ocellar Seta Spines on Posterior Margin of Abdominal Segments 1-8

7 Sugarcane Thrips World Distribution Originally described from Indonesia

8 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from 1940 s

9 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from 1950 s 1940 s

10 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from 1980 s 1950 s 1940 s

11 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from 1980 s 1990 s 1950 s 1940 s

12 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from s 1990 s 1950 s 1940 s

13 Sugarcane Thrips World Distribution Originally described from Indonesia, now reported from s 1990 s s 1940 s

14 Sugarcane Thrips Damage Damage directly through feeding and oviposition (up to 80 eggs/female)

15 Sugarcane Thrips Damage Damage directly through feeding and oviposition (up to 80 eggs/female) Leaves have dry, rolled tips; brown margins; yellowish streaking

16 Sugarcane Thrips Damage Damage directly through feeding and oviposition (up to 80 eggs/female) Leaves have dry, rolled tips; brown margins; yellowish streaking

17 Sugarcane Thrips Damage Damage directly through feeding and oviposition (up to 80 eggs/female) Leaves have dry, rolled tips; brown margins; yellowish streaking

18 Younger plants more affected Sugarcane Thrips Damage Severity yield loss varies according to localities and cultivars Some cultivars more susceptible to damage, depending on weather conditions Outbreaks in South Africa, India and Cuba associated with drought Cuba, largest populations (up to 113 indivduals/spindle) recorded in January and February, which coincides with dry season Barbados, some cultivars more susceptible under rainy condition

19 Sugarcane Thrips Damage Yield losses insignificant in Venezuela, Cuba, Trinidad and Mauritius China, losses estimated at around 15% South Africa losses estimated at nearly 27%

20 Sugarcane Thrips Control Where possible, shift planting time so that young plants are not available during dry season Natural enemies not explored in systematic way, although several beetles and true bugs are predacious on the thrips Chemical control, although how effective this is in long terms remains unclear.

21 Sugarcane Thrips Monitoring Sticky traps set above sugarcane canopy; presence of few thrips leads to. Direct examination of leaf spindle, and curled leaves Following work done in Cuba, 22 thrips/spindle is threshold for onset of severe damage

22 We do not know. Sugarcane Thrips Distribution in Florida