#littlefireants — Oahu Invasive Species Committee (OISC)

ARE YOU GETTING BITTEN OR STUNG IN YOUR YARD?

SEVERAL LITTLE FIRE ANTS INFESTATIONS CURRENTLY UNDERGOING TREATMENT ON OAHU.

These recent detections of little fire ants on Oahu are the results of residents submitting ants for identification after being repeatedly “bitten” in their yard. There are over 50 species of ants in Hawaii and none are native. However, some are worse than others…and little fire ants are one of the worst in the world. There are several stinging ants widely established on the island that are similar in color and size. To identify ants by their species, they need to be looked at under a microscope. So, the public is asked to collect and send their ants for identification.

If little fire ant infestations are found early….the successful eradication of that colony is greatly increased.

So please…COLLECT & SUBMIT YOUR ANTS FOR IDENTIFICATION: “How to Test for LFA,” which shows the step-by-step procedure for testing for LFA: https://vimeo.com/97558997

It’s easy…you just need to place a very thin smear of peanut butter on the end of a stick, a small piece of paper and leave it in a damp, shady area for 1 hour.
Place any sticks that have ants into a ziptop bag and freeze overnight to kill the ants.
Mail the ziptop bag of ants to either HDOA: 1428 S. King St., Honolulu 96814 or OISC: 743 Ulukahiki St., Kailua 96734…we’ll identify them and let you know.

For more information on Stop the Ant campaign, go to: http://stoptheant.org/

LFA was first detected in the state on Hawaii Island in 1999. However, by time it was found, the ants were widely disbursed on the island and no treatment protocol existed for eradication. The HAL was then established to research best method of eradication and control of LFA. The treatment plans developed by HAL and HDOA entomologists have been very successful in eradicating new infestations. The protocol uses several types of pesticides and bait formulas applied on a six-week interval for a total of eight treatments. Originally from South America, LFA is considered among the world’s worst invasive species. LFA are tiny ants, measuring 1/16th inch long, and pale orange in color. LFA move slowly, unlike the tropical fire ant, which is established in Hawaii, can move quickly, and is much larger with a larger head in proportion to its body. LFA can produce painful stings and large red welts and may cause blindness in pets. They can build up very large colonies on the ground, in trees and other vegetation, and inside buildings and homes and completely overrun a property.

Are these little fire ants? Don’t know! There are several ants similar in size and color that are widespread in Hawaii. We can’t ID the ant species unless we look at them under a microscope. Collect and send your ants in for identification and find out what species of ants you have.

Current Areas Under Treatment for LFA on Oahu:

Kaneohe, Oahu

Reported December 19, 2018 – Samples submitted to HAL
Treatment zone 2 acres; 11 properties involved
Treatment began January 2019; survey in July 2019 found no LFA
Participating partners: HDOA, HAL

Ahuimanu, Oahu

Reported January 25, 2019 – Samples submitted by resident to Oahu Invasive Species Committee (OISC)
Treatment zone 2 acres; 12 properties involved
Treatment began March 2019
Participating partners: HDOA, HAL, OISC

Lanikai, Oahu

Reported June 13, 2019 – Resident submitted ant samples to HAL.
Treatment zone < 2 acres; 6 properties involved
Treatment began July 17, 2019
Participating partners: HDOA, HAL

Kualoa, Oahu

Reported May 8, 2019 – Kualoa staff submitted ant samples to OISC.
Treatment zone 20 acres; pastures, natural areas, unpaved roadways
Treatment began September 16, 2019
Participating Partners: Kualoa Ranch, HAL, HDOA, GCAPS, OISC, Oahu Army National Resource Program
(OANRP), U.S. Fish and Wildlife Service (USFWS),

Makiki Heights, Oahu

Reported July 23, 2019 – Resident submitted ant samples to HAL – Oahu
Treatment zone approximately 5 acres; 18 properties involved
Treatment began October 9, 2019
Participating partners: HDOA, HAL

Pauoa, Oahu

Reported August 30, 2019 – Resident submitted ant samples to HDOA/HAL
Delimiting surveys currently being conducted on approximately 2 acres and 8 properties involved
Treatment will begin when surveys are complete
Participating partners: HDOA, HAL

Laie, Oahu

Reported October 7, 2019
Delimiting surveys currently being conducted
Participating partners: HDOA, HAL, GCAPS, OISC, OANRP, USFWLS

Second Windward Little Fire Ant Infestation Found in Ahuimanu

For Immediate Release from Hawaii Department of Agriculture: March 7, 2019

HONOLULU – Little fire ants (LFA) have been confirmed in a second Windward Oahu neighborhood. A resident in Ahuimanu reported stinging ants and surveys of the area and a nearby home of a relative detected two infestation sites around Ahuimanu Rd. The main site involves 13 properties and the other site involves five properties, totaling about three acres, including 15-meter buffer zones around each site. The area was treated today by the Hawaii Department of Agriculture (HDOA) and the Hawaii Ant Lab (HAL). Crews also conducted the second treatment of the Kaneohe neighborhood where LFA was detected in December. HDOA Plant Pest Control specialists from Hawaii Island were also brought in to help conduct
the treatments.

In late January, an Ahuimanu resident reported stinging ants and HDOA entomologists confirmed that they were LFA. Crews conducted multiple surveys of the neighborhood to determine the boundaries of the two infestations. The infestations in Kaneohe and Ahuimanu do not appear to be related.

Last week, LFA was also confirmed on a plant that was purchased at the Punahou Carnival in early February. Those who purchased plants at the carnival are also being urged to test their plants for LFA. So far, no LFA have been reported on any other plants sold at the carnival. Suspected LFA should be reported to HDOA’s Plant Pest Control Branch at (808) 973-9538.

“These recent detections should be a warning to homeowners on all uninfested islands to check for little fire ants periodically,” said Phyllis Shimabukuro-Geiser, acting chairperson of the Hawaii Board of Agriculture. “People traveling from infested areas should also be very cautious of potentially transporting these tiny ants in plant material, baggage and cargo.”

The Kaneohe infestation zone includes a total of 11 properties covering about two acres around Alokahi St. That area was treated today for the second time following a treatment plan developed by HAL researchers. It involves the use of several types of pesticides and bait formulas applied in six-week intervals for a total of at least eight treatments. Monitoring of the treated areas will continue for several years.

In 2015, LFA was successfully eradicated in a six-acre infestation site in Mililani Mauka using the same treatment protocol being used in the two Windward Oahu infestation sites.

LFA has been found on Hawaii Island since 1999 and the population is widespread on that island.

Since that initial detection, HAL and HDOA have developed a treatment strategy that has helped to prevent the spread of LFA to other islands.

HDOA and partner agencies, including the Invasive Species Committees on Oahu, Kauai, and Maui County and the Coordinating Group on Alien Pest Species (CGAPS) have been asking residents on Oahu, Kauai and Maui County to survey their properties for LFA by using a little peanut butter on a chopstick and leave them in several areas for about one hour. Any ants collected should be put in a sealable plastic bag, placed in the freezer for at least 24 hours and dropped off or mailed to any HDOA office. An informational flyer may be downloaded at: http://hdoa.hawaii.gov/pi/files/2014/05/LFASurvey.pdf

In addition, the Department of Land and Natural (DLNR) Resources has produced a three-minute video, “How to Test for LFA,” which shows the step-by-step procedure for testing for LFA. The video is available at: https://vimeo.com/97558997

Originally from Central and South America, LFA is considered among the world’s worst invasive species. LFA are tiny ants, measuring 1/16^th inch long, are pale orange in color. LFA move slowly, unlike the tropical fire ant, which is established in Hawaii, move quickly, and are much larger with a larger head in proportion to its body. LFA can produce painful stings and large red welts and may cause blindness in pets. They can build up very large colonies on the ground, in trees and other vegetation, and buildings and homes and completely overrun a property.

Suspected invasive species should be reported to the state’s toll-free PEST HOTLINE – 643-PEST (7378).

Little Fire Ants Found in Kāneʻohe

HAWAII DEPARTMENT OF AGRICULTURE NEWS RELEASE: January 24th, 2019

HONOLULU – An infestation of little fire ants (LFA) was reported at a residential neighborhood in Kaneohe and the area was treated today in multi-agency effort involving the Hawaii Department of Agriculture (HDOA) and the Hawaii Ant Lab (HAL). A total of 11 properties covering about two acres were treated this morning, including a 15-meter buffer zone around the infestation area.

On December 13, 2018, a resident on Alokahi St. contacted HDOA to inquire about ants in her home. The resident added that she had traveled to Hawaii Island. On December 19^th, staff from HAL retrieved the ant samples which were identified as LFA on December 20^th by an HDOA entomologist. On December 21^st, HDOA and HAL staff returned to the home and conducted a survey of the exterior of the residence and detected LFA in the patio, carport and along the perimeter of the property. Staff returned on December 24^th to survey two surrounding properties which also had LFA.

A larger survey of 12 properties in the area was conducted on January 4^th and LFA was found in seven of those properties. On January 9^th, another survey of two additional properties was conducted and one was found to have LFA. According to the treatment plan developed by HAL researchers, several types of pesticides and bait formulas are applied on a six-week interval for a total of eight treatments. Monitoring of the area will continue for several years.

In June 2014, an LFA infestation was detected in Mililani Mauka which covered six acres. A similar multi-agency response successfully eradicated the infestation and that neighborhood has been free of LFA since February 2015.

“This coordinated treatment and response plan for this infestation has been proven effective in the past and we appreciate the continued assistance of the different agencies and also the cooperation of the residents,” said Denise Albano, chairperson of the Hawaii Board of Agriculture. “This incident also reminds everyone to remain vigilant and report any suspected infestation of little fire ants.”

LFA has been found on Hawaii Island since 1999 and the population is widespread on that island. Since that initial detection, HAL and HDOA have developed a treatment strategy that has helped to prevent the spread of LFA to other islands.

Originally from South America, LFA is considered among the world’s worst invasive species. LFA are tiny ants, measuring 1/16^thinch long, are pale orange in color. LFA move slowly, unlike the Tropical Fire Ant, which is established in Hawaii, move quickly, and are much larger with a larger head in proportion to its body. LFA can produce painful stings and large red welts and may cause blindness in pets. They can build up very large colonies on the ground, in trees and other vegetation, and buildings and homes and completely overrun a property.

Suspected invasive species should be reported to the state’s toll-free PEST HOTLINE – 643-PEST (7378).

Media Contact:

Janelle Saneishi, Public Information Officer
Hawaii Department of Agriculture

808.973.9560

hdoa.info@hawaii.gov

http://hdoa.hawaii.gov/

ARE YOU GETTING BITTEN OR STUNG IN YOUR YARD?

Second Windward Little Fire Ant Infestation Found in Ahuimanu

Little Fire Ants Found in Kāneʻohe

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