First report of Xyleborus glabratus (Coleoptera: Curculionidae: Scolytinae) and laurel wilt in Louisiana, USA: the disease continues westward on sassafras

Authors

  • Stephen W. Fraedrich USDA Forest Service, Southern Research Station, Athens, Georgia 30602, USA
  • C. Wood Johnson USDA Forest Service, Forest Health Protection, Pineville, Louisiana 71360, USA
  • Roger D. Menard USDA Forest Service, Forest Health Protection, Pineville, Louisiana 71360, USA
  • Thomas C. Harrington Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa 50011, USA
  • Rabiu Olatinwo USDA Forest Service, Southern Research Station, Pineville, Louisiana 71360, USA
  • G. Susan Best USDA Forest Service, Southern Research Station, Athens, Georgia 30602, USA

Keywords:

Raffaelea lauricola, redbay ambrosia beetle

Abstract

Xyleborus glabratus Eichhoff (Coleoptera: Curculionidae: Scolytinae) and sassafras trees that died from laurel wilt were discovered in a 3-parish area of northern Louisiana, USA, in Sep 2014. Redbay, a species that has been severely affected by the disease in the coastal plains forests of the southeastern USA, is not found in this area of northern Louisiana, suggesting that sassafras is attractive to X. glabratus and an adequate reproductive host for the beetle. This is the first report of X. glabratus and laurel wilt in Louisiana and the first report of the beetle and disease west of the Mississippi River.

 

Sumario

En septiembre del 2014, Xyleborus glabratus Eichhoff (Coleoptera: Curculionidae: Scolytinae) y árboles de sasafrás que murieron a causa de la marchitez del laurel fueron descubiertos en un área de 3 municipios del norte de Louisiana, EE.UU. El aguacatillo (Persea borbonia), una especie que se ha visto gravemente afectada por la enfermedad en los bosques de la llanura costero del sudeste de EE.UU., no se encuentra en esta zona del norte de Louisiana, lo que sugiere que el sasafrás es atractivo para X. glabratus y un hospedero reproductivo adecuado para el escarabajo. Este es el primer informe de X. glabratus y la marchitez del laurel en Louisiana y el primer informe del escarabajo y la enfermedad al oeste del río Mississippi.

 

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Author Biographies

Stephen W. Fraedrich, USDA Forest Service, Southern Research Station, Athens, Georgia 30602, USA

Research Plant Pathologist with the US Forest Service

Working on relationships between insects and disease causing fungi (e.g. laurel wilt, thousand cankers)

C. Wood Johnson, USDA Forest Service, Forest Health Protection, Pineville, Louisiana 71360, USA

Entomologist

Roger D. Menard, USDA Forest Service, Forest Health Protection, Pineville, Louisiana 71360, USA

Plant Pathologist

Thomas C. Harrington, Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa 50011, USA

Professor of Plant Pathology and Forestry

Rabiu Olatinwo, USDA Forest Service, Southern Research Station, Pineville, Louisiana 71360, USA

Research Plant Pathologist

G. Susan Best, USDA Forest Service, Southern Research Station, Athens, Georgia 30602, USA

Plant Pathologist

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Published

2015-10-02

Issue

Vol. 98, No. 4 (December 2015)

Section

Scientific Notes

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