Category: Pests

AAA shares pest information regularly, so that industry professionals and the public can stay informed and help protect Hawaii's trees.

May 28

Pest of the Month – May 2016

Tea scale of camellia – Fiorinia phantasma Photos by Dr. Arnold Hara, University of Hawai’i, CTAHR   Tea scale of camellia is a polyphagous armored scale. These mussel-shaped scales are found on the underside of leaves, are up to 0.67mm in length, and often have horizontal red stripes across their backs. Large eggs found under …

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Apr 25

Pest of the Month – April 2016

Koa Wilt – Fusarium oxysporum All photos by Dr. J.B. Friday, University of Hawai’i, CTAHR                             Description The fungus Fusarium oxysporum lives in and blocks the xylem of Acacia koa and Acacia koaia, causing major dieback or tree death. Distribution Hawaii Island, …

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Jul 09

Pest Of The Month – Koa Rust (Atelocauda digital)

Pest of the Month – Koa Rust (Atelocauda digital) Hosts: Infects a wide range of Acacia species, including A. koa, mangium, auriculiformis, aulococarpa, crasicarpa, leptocarpa, mearnsii, and polystacha. Distribution: Occurs on all major Hawaiian islands except Lāna‘i. Damage: This rust disease is not fatal to koa trees. Severe symptoms (witches’ brooms) are mainly confined to several or …

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May 18

May 2015 – Pest of the Month

Monkeypod Round-Headed Longhorn Beetle – Xystrocera globosa Hosts: Wide range of species of wild and cultivated leguminous trees, (Mimosaceae, Papilonaceae), belonging to genera such as Acacia, Acrocarpus, Adenanthera, Adina, Albizzia, Bauhinia, Cassia, Duabanga, Haematoxylon, Parkia, Xylia, Paraserianthes, Samanea, and several Malvaceae (Grewia, Salmalia) and Rosaceae (Prunus). Distribution: Originates from Southeast Asia, and is widely distributed.  …

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Apr 07

Pest of the Month: Rapid Ohia Death

“Rapid Ohia Death” is a fungal pathogen called Ceratocystis. Altough newly discovered infecting Ohia, it has previously been found on other plants here including Okinawan sweet potato and taro as described in this recent article in the Hawaii Tribune Herald.

Feb 25

Identify the Coconut Rhinoceros Beetle Larvae

Feb 25

Coconut Rhinoceros Beetle Best Management Practices

Coconut Rhinoceros Beetle (CRB) BMPs or Recommendations for Landscapers and Arborists By Rob Hauff  Remove standing dead coconut palms to prevent infestation. Decaying coconut wood is the preferred breeding habitat for CRB. Wood should be chipped and composted away from infested areas, preferably in few centralized piles, rather than multiple widely dispersed piles. Palms should …

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Feb 18

February 2014 Pest of the Month

Hawaii Early Detection Network Priority Pest for Kauai, Oahu, Molokai, Lanai, and Big Island. Have you seen Hala Scale (Thysanococcus pandani)? Identification: Presently only on the island of Maui. The hala scale insect (Thysanococcus pandani) causes yellowing of and serious damage to the leaves of Hala (Pandanus tectorius). Adult and immature scale insects are seen on …

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Jan 13

January 2014 Pest of the Month

Pest of the Month Update – Little Fire Ant (LFA), Wasmannia auropunctata.  The Hawaii Department of Agriculture has confirmed that the LFA has spread from Big Island to Maui and Oahu. http://www.kitv.com/news/hawaii/agriculture-officials-confirm-spread-of-fire-ant-to-oahu-maui/-/8905354/23720066/-/15huymlz/-/index.html http://hdoa.hawaii.gov/blog/main/lfaonhapuu/ Hosts: LFA are found both on the ground and in vegetation. They climb onto plants of all sizes, including trees, but they …

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Oct 24

November 2013 Pest of the Month

Biological Control Release of Tectococcus ovatus, a Gall-forming Scale Insect to Aid in the Control of Strawberry Guava (Psidium cattleianum) in Hawaii.  Strawberry guava was introduced to yards and gardens of Hawai‘i in 1825. Since then, it has spread into moist and wet forests statewide. Strawberry guava is killing and replacing native forests by forming dense, …

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