Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Emilee M. Poole; Michael D. UlyshenScott HornMichelle CramRabiu OlatinwoStephen Fraedrich
    Date: 2019
    Source: Annals of Forest Science
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (2.0 MB)

    Description

    *Key message Agrilus macer is attacking sugarberry trees in the southeastern USA, a region from which few specimens have been previously collected. Despite attacking at high densities, this species appears to be a secondary pest, and there is no evidence it carries harmful fungal pathogens. * Context Because the genus Agrilus Curtis includes significant forest pests, the association of a poorly known species, Agrilus macer LeConte, with unexplained sugarberry (Celtis laevigata Willd.) mortality in the southeastern USA is a cause for alarm. * Aims This study sought to investigate the distribution and biology of A. macer and determine whether the species is a primary cause of observed tree mortality. * Methods Through a series of studies and literature searches, we documented aspects of A. macer biology and distribution while focusing on egg-laying behavior and searching for fungal pathogens associated with oviposition sites. * Results A. macer appears to be widely distributed throughout the southern USA, but most records are from Texas and Louisiana. Egg mass densities up to 1.2 masses per 10 cm2 (equivalent to ~ 1.9 eggs per cm2) were observed on trunks, branches, and exposed roots of dying C. laevigata trees in our study area, with an average of 16 eggs per mass. Fungi isolated from discolored sapwood around larval galleries did not cause defoliation, dieback, or mortality of sugarberry in inoculation trials. * Conclusion Our findings suggest that A. macer is a secondary pest on sugarberry and does not transmit harmful fungal pathogens.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Poole, Emilee M.; Ulyshen, Michael D.; Horn, Scott; Cram, Michelle; Olatinwo, Rabiu; Fraedrich, Stephen. 2019. Biology and distribution of Agrilus macer LeConte (Coleoptera: Buprestidae), a species associated with sugarberry (Celtis laevigata Willd.) mortality in the southeastern USA. Annals of Forest Science. 76(7): 14 pages. https://doi.org/10.1007/s13595-018-0794-7.

    Cited

    Google Scholar

    Keywords

    Agrilus, Eggs, Egg masses, Fungal isolation, Oviposition, Saproxylic

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/58640