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Insects 2016, 7(4), 78; doi:10.3390/insects7040078

Crapemyrtle Bark Scale: A New Threat for Crapemyrtles, a Popular Landscape Plant in the U.S.

1
Department of Entomology, Agricultural Center, Louisiana State University, Baton Rouge, LA 70803, USA
2
Hammond Research Station, Agricultural Center, Louisiana State University, Hammond, LA 70403, USA
3
Department of Horticultural Science, Texas A&M AgriLife Extension Service, College Station, TX 77843, USA
4
Department of Entomology, Texas A&M AgriLife Research & Extension Center, Overton, TX 75684, USA
5
Department of Entomology, Texas A&M AgriLife Research & Extension Center, Dallas, TX 75252, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Mary L. Cornelius
Received: 25 October 2016 / Revised: 3 December 2016 / Accepted: 9 December 2016 / Published: 16 December 2016
(This article belongs to the Special Issue Invasive Insect Species)
View Full-Text   |   Download PDF [8996 KB, uploaded 16 December 2016]   |  

Abstract

Crapemyrtle bark scale, Acanthococcus (=Eriococcus) lagerstroemiae (Kuwana) (Hemiptera: Eriococcidae), is a newly introduced insect pest on crapemyrtles, Lagerstroemia spp. (Myrtales: Lythraceae), one of the most popular flowering shrubs in the U.S. Since first detected in Texas in 2004, this pest has spread to twelve states causing losses to stakeholders. To develop a management plan, we reviewed current knowledge about the pest’s biology and ecology, and suggested research approaches including studying its thermal tolerance, host range, plant resistance and biological control. Parasitoids and predators have been reared from A. lagerstroemiae in the U.S. and China. However, new surveys of natural enemies should be conducted in China, and studies on the host range and impacts of natural enemies on A. lagerstroemiae may help determine the potential for classical biological control. The life history, preying efficiency and rearing methods are important for coccinellid predators found in the U.S. including Chilocorus cacti L. and Hyperaspis spp. To enhance natural enemy performance, it is important to evaluate a sustainable insecticide program that considers efficacy, timing, rate and impact on pollinator health. Finally, an integrated management program of A. lagerstroemiae is discussed including planting resistant cultivars, using host specific natural enemies, and prudent use of insecticides. View Full-Text
Keywords: Acanthococcus lagerstroemiae (Kuwana); exotic species; integrated pest management; host resistance; biological control; parasitoids; Chilocorus cacti L.; Hyperaspis spp. Acanthococcus lagerstroemiae (Kuwana); exotic species; integrated pest management; host resistance; biological control; parasitoids; Chilocorus cacti L.; Hyperaspis spp.
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, Z.; Chen, Y.; Gu, M.; Vafaie, E.; Merchant, M.; Diaz, R. Crapemyrtle Bark Scale: A New Threat for Crapemyrtles, a Popular Landscape Plant in the U.S.. Insects 2016, 7, 78.

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