Category Archive: Pests

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

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

Little Fire Ant – Queen and worker ant

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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Oct 07

October 2013 Pest of the Month

Melaleuca Psyllid – Boreioglycaspis melaleucae Moore An introduced psyllid for biological control of Paperbark trees in Florida. Hosts: Melaleuca quinquenervia (Paperbark Tree), Melaleuca leucadendra, Melaleuca nervosa, Melaleuca argentea, Melaleuca viridiflora, Melaleuca nodosa, and Callistemon citrinus (Bottlebrush). Distribution: B. melaleucae has been collected from all states in its native Australia except South Australia. Specimens released in …

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Sep 10

September 2013 Pest of the Month

Citrus Mealybug (Planococcus citri) Hosts: Annona, Arabica, and Robusta coffee, cotton, banana, carambola, cacao, flowering ginger, macadamia, mango and plants belonging to Citrus genus. Distribution: This pest has a pan tropical distribution that extends into subtropical regions. It is present in nearly all coffee growing countries. Damage: Leaves of plants attacked by the root form …

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Sep 10

August 2013 Pest of the Month

Host: Coconut and Oil palms mainly – but also may attack other palm species Distribution:  South Pacific (American Samoa, others) and Guam. Damage: V-shaped cuts in the fronds or holes through the midrib Control: Eliminating the places where they breed and manually destroying adults and all stages of life cycle – eggs, larvae, and pupae.  …

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Sep 08

July 2013 Pest of the Month

Graphiola leaf spot – Graphiola phoenicis Hosts: The primary hosts in Floridaare Phoenix species, especially Phoenix canariensis (Canary Island date palm) and Phoenix dactylifera (date palm). Distribution: Widely distributed throughout the date-palm growing world. Damage: Very small black, cup-shaped fungal bodies (sori) are present on leaf blade of the oldest leaves.  This disease is primarily …

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