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Matsucoccus macrocicatrices (Hemiptera: Matsucoccidae): first report, distribution, and association with symptomatic eastern white pine in the southeastern United States.

Authors
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 4
  • 1 Daniel B. Warnell School of Forestry and Natural Resources, University of Georgia, 180 East Green St., Athens, GA 30602, USA. [email protected] , (Georgia)
  • 2 Virginia Department of Forestry, 900 Natural Resources Drive, Suite 800, Charlottesville, VA 22903, USA.
  • 3 USDA Forest Service, Forest Health Protection, 320 Green St., Athens, GA 30602, USA.
  • 4 Daniel B. Warnell School of Forestry and Natural Resources, University of Georgia, 180 East Green St., Athens, GA 30602, USA. , (Georgia)
  • 5 Division of Evolution, Ecology and Genetics, The Research School of Biology, The Australian National University, Canberra, ACT 0200, Australia. , (Australia)
  • 6 School of Biological Sciences, The University of Queensland, Brisbane, QLD 4072, Australia. , (Australia)
Type
Published Article
Journal
Journal of Economic Entomology
0022-0493
Publisher
Oxford University Press
Publication Date
Volume
106
Issue
6
Pages
2391–2398
Identifiers
PMID: 24498739
Source
Medline
License
Unknown

Abstract

We provide the first report of Matsucoccus macrocicatrices Richards (Hemiptera: Matsucoccidae) feeding and reproducing on eastern white pine, Pinus strobus L., in the southeastern United States. Until now, M. macrocicatrices had been reported only from the Canadian Atlantic Maritimes, New Hampshire, and Massachusetts. Entomological holdings of 27 major museums in eastern North America have no historical records for M. macrocicatrices from the southeastern region. However, our field surveys and molecular analyses (DNA barcoding) have resulted in the collection and positive identification of M. macrocicatrices in Georgia, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia In addition to the new geographic range, M. macrocicatrices is also being associated with dieback and mortality of all diameter classes of P. strobus leading to concern about a potential shift from its historically nonpestiferous presence on the host tree. On P. strobus, M. macrocicatrices was found embedded in cankers or present on top of the bark with necrotic tissue under their feeding area, indicating that they may be creating wounds for opportunistic pathogenic fungi to infest. Further, we found M. macrocicatrices living outside of the epiphytic mats of its symbiotic fungus, Septobasidium pinicola Snell. This study shows that M. macrocicatrices is now widespread in the southeastern United States, with implications for the future survival and regeneration of P. strobus in eastern North America.

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