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Ru Nguyen

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Ru Nguyen

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Florida Department of Agriculture and Consumer Services, Division of Plant Industry; courtesy assistant professor, Department of Entomology and Nematology

Publications

thumbnail for publication: Ash Whitefly, Siphoninus phillyreae (Haliday) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Ash Whitefly, Siphoninus phillyreae (Haliday) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Ru Nguyen and Avas B. Hamon

The Featured Creatures collection provides in-depth profiles of insects, nematodes, arachnids, and other organisms relevant to Florida. These profiles are intended for the use of interested laypersons with some knowledge of biology as well as academic audiences.

thumbnail for publication: Red Palm Mite, Raoiella indica Hirst (Arachnida: Acari: Tenuipalpidae)

Red Palm Mite, Raoiella indica Hirst (Arachnida: Acari: Tenuipalpidae)

Marjorie A. Hoy, Jorge Peña, and Ru Nguyen

The Featured Creatures collection provides in-depth profiles of insects, nematodes, arachnids and other organisms relevant to Florida. These profiles are intended for the use of interested laypersons with some knowledge of biology as well as academic audiences.

thumbnail for publication: Cloudywinged Whitefly, Dialeurodes citrifolii (Morgan) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Cloudywinged Whitefly, Dialeurodes citrifolii (Morgan) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Ru Nguyen, Avas Hamon, and Thomas R. Fasulo

The Featured Creatures collection provides in-depth profiles of insects, nematodes, arachnids and other organisms relevant to Florida. These profiles are intended for the use of interested laypersons with some knowledge of biology as well as academic audiences.

thumbnail for publication: A Citrus Blackfly Parasitoid, Amitus hesperidum Silvestri (Insecta: Hymenoptera: Platygastridae)

A Citrus Blackfly Parasitoid, Amitus hesperidum Silvestri (Insecta: Hymenoptera: Platygastridae)

Ru Nguyen

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management

thumbnail for publication: Citrus Blackfly, Aleurocanthus woglumi Ashby (Insecta: Hemiptera: Aleyrodidae)

Citrus Blackfly, Aleurocanthus woglumi Ashby (Insecta: Hemiptera: Aleyrodidae)

Ru Nguyen, Avas B. Hamon, and Thomas R. Fasulo

A UF/IFAS numbered Organism ID. Published by Integrated Pest Management. This document provides an in-depth profile of the citrus blackfly, Aleurocanthus woglumi Ashby, a serious citrus pest of Asian origin. It covers the insect's distribution, life cycle, identification, economic importance, and management strategies. The citrus blackfly infests over 300 host plants, primarily citrus, causing damage by sucking nutrients from foliage and excreting honeydew, which leads to sooty mold development. Effective biological control methods, including parasitic wasps, are highlighted as key management strategies in Florida. First published July 1998.

thumbnail for publication: A Citrus Blackfly Parasitoid, Encarsia perplexa Huang and Polaszek (Insecta: Hymenoptera: Aphelinidae)

A Citrus Blackfly Parasitoid, Encarsia perplexa Huang and Polaszek (Insecta: Hymenoptera: Aphelinidae)

Ru Nguyen and T. R. Fasulo

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management

thumbnail for publication: Parasitoid of the Citrus Leafminer, Cirrospilus ingenuus Gahan (Insecta: Hymenoptera: Eulophidae)

Parasitoid of the Citrus Leafminer, Cirrospilus ingenuus Gahan (Insecta: Hymenoptera: Eulophidae)

Marjorie A. Hoy and Ru Nguyen

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management

thumbnail for publication: Brown Citrus Aphid Parasitoid, Lipolexis oregmae Gahan (Insecta: Hymenoptera: Aphidiidae)

Brown Citrus Aphid Parasitoid, Lipolexis oregmae Gahan (Insecta: Hymenoptera: Aphidiidae)

Marjorie A. Hoy and Ru Nguyen

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management

thumbnail for publication: Sugarcane Lace Bug, Leptodictya tabida

Sugarcane Lace Bug, Leptodictya tabida

Ru Nguyen and David G. Hall

A UF/IFAS numbered publication. in support of UF/IFAS Extension program: Integrated Pest Management. This document provides an overview of the sugarcane lace bug, Leptodictya tabida, detailing its discovery, distribution, morphology, and life cycle. First identified in Florida in 1990, this pest affects sugarcane fields, causing significant damage. The article describes the bug's physical characteristics, developmental stages, and host plants, including sugarcane and other grasses. It also discusses natural enemies and unsuccessful attempts to introduce biological control agents. The document emphasizes the need for further research to manage this pest effectively. Original publication date July 1998. 

thumbnail for publication: A Citrus Whitefly Parasitoid, Encarsia lahorensis (Howard) (Insecta: Hymenoptera: Aphelinidae)

A Citrus Whitefly Parasitoid, Encarsia lahorensis (Howard) (Insecta: Hymenoptera: Aphelinidae)

Ru Nguyen

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management

thumbnail for publication: Pink Hibiscus Mealybug, Maconellicoccus hirsutu (Green)

Pink Hibiscus Mealybug, Maconellicoccus hirsutu (Green)

M. A. Hoy, A. Hamon, and R. Nguyen

The Featured Creatures collection provides in-depth profiles of insects, nematodes, arachnids and other organisms relevant to Florida. These profiles are intended for the use of interested laypersons with some knowledge of biology as well as academic audiences. This document provides an in-depth profile of the pink hibiscus mealybug, Maconellicoccus hirsutus, a serious pest affecting various plants in tropical and subtropical regions. It details the pest's introduction to Florida, its potential impact on crops and ornamental plants, and the increased pesticide use required for management. The article also discusses the mealybug's distribution, life cycle, and damage caused to plants. Additionally, it explores biological control methods, including the use of natural enemies like ladybugs and parasitoids to suppress mealybug populations.

thumbnail for publication: Parasitoid of the Citrus Leafminer, Semielacher petiolatus (Girault) (Insecta: Hymenoptera: Eulophidae)

Parasitoid of the Citrus Leafminer, Semielacher petiolatus (Girault) (Insecta: Hymenoptera: Eulophidae)

Marjorie A. Hoy, Lucia Zappala and Ru Nguyen

The Featured Creatures collection provides in-depth profiles of insects, nematodes, arachnids and other organisms relevant to Florida. These profiles are intended for the use of interested laypersons with some knowledge of biology as well as academic audiences.

thumbnail for publication: Bayberry Whitefly, Parabemisia myricae (Kuwana) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Bayberry Whitefly, Parabemisia myricae (Kuwana) (Insecta: Hemiptera: Aleyrodidae: Aleyrodinae)

Avas B. Hamon, Ru Nguyen, and Harold Browning

A UF/IFAS numbered Organism ID. in support of UF/IFAS Extension program: Integrated Pest Management