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Research Priorities for Urban Ants in Hawaii
Neil ReimerHawaii Dept. of Agriculture
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Hawaii Ant Fauna
54 species All alien species Not all invasive 16 significant pest problems
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0
10
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1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
No. Ants
Cummulative
New Ant Species Discovered in Hawaii
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Pest Ants * Pheidole megacephala * Anoplolepis gracilipes * Ochetellus glaber * Tapinoma melanocephalum * Technomyrmex albipes * Camponotus variegatus * Plagiolepis alluaudi * Monomorium pharaonis
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Pest Ants (cont)
Pseudomyrmex gracilis Paratrechina bourbonica Paratrechina longicornis Monomorium destructor Monomorium floricola Solenopsis geminata Wasmannia auropunctata
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Pest Ants - occasional
Hypoponera opaciceps (alates) Brachymyrmex obscurior (alates)
Linepithema humile (not significant)
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Camponotus variegatus Carpenter ant
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Anoplolepis gracilipes Long legged ant
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Ochetellus glaber Glaber ant
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Plagiolepis alluaudi Small yellow house ant
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Technomyrmex albipes White footed ant
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Tapinoma melanocephalum Ghost ant
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Pseudomyrmex gracilis Mexican ant, long twig ant
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Wasmannia auropunctata Little fire ant
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Solenopsis invicta Red imported fire
ant
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Formicides being used (PMP’s)
Indoors Gels
*Optigard (thiamethoxam) *Advion (indoxacarb)
Spray *Phantom (chlorfenapyr) *Termidor (fipronil) bifenthrin cyfluthrin imidichloprid
Outdoors *Termidor Talstar granules
(bifentrhin) bifenthrin deltamethrin
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Pro’s and Con’s of Tools
Most use backpack sprayer for exterior Con – labor time Pro – direct treatment, less pesticide
Termidor – only every 6 mo. Need other tools for Q’ly visits
“non-repellants” (Phantom) interior are working and replace baits
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Research Needs Tools for tropical species
Tools for arboreal ants
More effective baits, granules, liquids
Quick activity
If not for “non-repellants” would still be using “trial by error” (i.e., boric acid plus feeding stimulant- mint, guava, strawberry jelly)
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Pesticide runoff issues?
Always big concern Many streams, ponds, ocean, wells Try to avoid truck mounted power
sprayers – use backpack sprayer Use granules and baits Educate techs in IPM methods