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Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida State Collection of Arthropods Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida.

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Presentation on theme: "Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida State Collection of Arthropods Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida."— Presentation transcript:

1 Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida State Collection of Arthropods Giant Palm Weevils: Headed our Way? Michael C. Thomas Florida State Collection of Arthropods

2 Nine species of Rhynchophorus Herbst R. bilineatus (Montrouzier) – Southeastern Asia R. cruentatus (Fabricius) – Southeastern U.S. R. distinctus Wattanapongsiri – Southeastern Asia R. ferrugineus (Olivier) – Asia, Europe, Caribbean, California R. lobatus Ritsema – Southeastern Asia R. palmarum (Linnaeus) – Tropical Americas, Caribbean, California R. phoenicus (Fabricius) – Africa R. quadrangulus Quedenfeldt – Africa R. ritcheri Wattanapongsiri – South America Nine species of Rhynchophorus Herbst R. bilineatus (Montrouzier) – Southeastern Asia R. cruentatus (Fabricius) – Southeastern U.S. R. distinctus Wattanapongsiri – Southeastern Asia R. ferrugineus (Olivier) – Asia, Europe, Caribbean, California R. lobatus Ritsema – Southeastern Asia R. palmarum (Linnaeus) – Tropical Americas, Caribbean, California R. phoenicus (Fabricius) – Africa R. quadrangulus Quedenfeldt – Africa R. ritcheri Wattanapongsiri – South America

3 Rhynchophorus cruentatus Fabricius Palmetto Weevil Range : Southeastern U.S., Bahamas Hosts : Sabal palmetto, Bismarckia nobilis, Washingtonia sp., Serrenoa repens, Phoenix dactylifera, Pritchardia sp., Roystonea sp., Cocos nucifera, Latania sp., Caryota sp., and Thrinax radiata. Rhynchophorus cruentatus Fabricius Palmetto Weevil Range : Southeastern U.S., Bahamas Hosts : Sabal palmetto, Bismarckia nobilis, Washingtonia sp., Serrenoa repens, Phoenix dactylifera, Pritchardia sp., Roystonea sp., Cocos nucifera, Latania sp., Caryota sp., and Thrinax radiata.

4 Rhynchophorus ferrugineus (Olivier) Red Palm Weevil Range : Asia, Europe, Caribbean, California Hosts : Areca catechu, Arenga saccharifera, Arenga pinnata, Borassus flabellifer, Borassus sp., Calamus merrillii, Caryota cumingii, Caryota maxima, Cocos nucifera, Corypha utan, Corypha umbraculifer, Elaeis guineensis, Livistona decipiens, Livistonachinensis, Livistonac saribus, Livistonac subglobosa, Metroxylon sagu, Oneosperma horrida, Oneosperma tigillarium, Phoenix canariensis, Phoenix dactylifera, Phoenix sylvestris, Oreodoxa regia, Sabal umbraculifera, Trachycarpus fortunei and Washingtonia sp., plus sugar cane, Saccharum officinarum and century plant, Agave americana. Rhynchophorus ferrugineus (Olivier) Red Palm Weevil Range : Asia, Europe, Caribbean, California Hosts : Areca catechu, Arenga saccharifera, Arenga pinnata, Borassus flabellifer, Borassus sp., Calamus merrillii, Caryota cumingii, Caryota maxima, Cocos nucifera, Corypha utan, Corypha umbraculifer, Elaeis guineensis, Livistona decipiens, Livistonachinensis, Livistonac saribus, Livistonac subglobosa, Metroxylon sagu, Oneosperma horrida, Oneosperma tigillarium, Phoenix canariensis, Phoenix dactylifera, Phoenix sylvestris, Oreodoxa regia, Sabal umbraculifera, Trachycarpus fortunei and Washingtonia sp., plus sugar cane, Saccharum officinarum and century plant, Agave americana.

5 Red Palm Weevil Distribution Red Palm Weevil Distribution 1966 2011

6 Red Palm Weevil Damage Red Palm Weevil Damage

7 Rhynchophorus palmarum (Linnaeus) South American Palm Weevil Range : Tropical Americas, Caribbean, California Hosts : Cocos nucifera, Elaeis guineensis, Euterpe edulis, Metroxylon sagu, Phoenix canariensis, Phoenix dactylifera, Saccharum officinarum Rhynchophorus palmarum (Linnaeus) South American Palm Weevil Range : Tropical Americas, Caribbean, California Hosts : Cocos nucifera, Elaeis guineensis, Euterpe edulis, Metroxylon sagu, Phoenix canariensis, Phoenix dactylifera, Saccharum officinarum

8 South American Palm Weevil Distribution South American Palm Weevil Distribution

9 South American Palm Weevil Damage South American Palm Weevil Damage

10 Palm Weevil Identification R. ferrugineusR. cruentatusR. palmarum

11 Trapping: unit Bucket trap – Buried in ground – Suspended from non-host tree Lure – Ethyl acetate – Male aggregation pheromone – Fermenting food bait Andrew Derksen, FDACS 2011

12 Trapping: Traps in Florida = 5 West Florida – 2 traps, in Hillsborough Co. – 2 sites total – Installed March 2011 – Checked bi-weekly, all results negative to date South Florida – 3 traps, in Miami-Dade Co. – 2 sites total – Installed March 2011 – Checked bi-weekly, all results negative to date


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