Angela Liu

Author's posts

Pest of the Month – August 2016

Pest of the Month — Verticillium Wilt   DESCRIPTION Verticillium wilt is caused by a variety of fungal species of the genus Verticillium, most notably V. dahliae and V. albo-atrum. It is “one of the most widespread and destructive soilborne diseases of plants” (UC IPM). Verticillium infects a plant through the roots and multiplies in the …

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Pest of the Month – July 2016

PEST ALERT – Diaprepes Root Weevil Photos: University of California Cooperative Extension (See Additional Resources below)   Distribution: The Diaprepes root weevil (Diaprepes abbreviatus) is currently not present on any Hawaiian islands. Native to Caribbean region, it was introduced into Florida in 1960s. The beetle is established in certain 
quarantine areas in Southern California (Los …

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Pest of the Month – June 2016

Pest of the Month – Chilli Thrips (Scirtothrips dorsalis) Description: Chilli thrips is a polyphagous species found in Oahu in 1987. Mature chilli thrips are less than 1-2 mm in length. Field identification should be confirmed by a professional entomologist. Hosts: Attacks over 100 species in 40 different Families, including crape myrtle, golden dewdrop, star jasmine, camellia, Indian hawthorn, Acacia spp., Ficus elastica, Schefflera …

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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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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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