Black Turpentine Beetle, Dendroctonus terebrans (Olivier) (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Dorsal view of an adult black turpentine beetle, Dendroctonus terebrans (Olivier). Its large size, trapezoidal pronotum, and rounded declivity distinguish it from all other bark beetles infesting pines in the southern United States. Credit: Adam Black and Jiri Hulcr, University of FloridaBlack turpentine beetles bore into the inner bark of stressed or injured pines, where they breed and feed on phloem tissue. Adults are strongly attracted to volatile pine odors and readily breed in fresh stumps. In typical forests, infestations do not exhibit the rapid and devastating expansion characteristic of the closely related southern pine beetle, but in stands where stress conditions are frequent or persistent, black turpentine beetle can become a chronic pest and cause significant mortality over an extended period of time. Historically, black turpentine beetle has been a major pest of pines wounded or treated with herbicides in naval stores production. During the 1950s, black turpentine beetle damaged 37 million board feet of timber and contributed to the financial collapse of turpentine farms. This 5-page fact sheet was written by Albert E. Mayfield, John L. Foltz and Jiri Hulcr, and published by the UF Department of Entomology and Nematology, June 2015. (Photo credit Adam Black and Jiri Hulcr, UF/IFAS)

Assessing the Survival of the Redbay Ambrosia Beetle and Laurel Wilt Pathogen in Wood Chips (FOR289/FR351)

Figure 2. 1 m3 mulch bin with mesh bags on the surface containing woodchips from the infested redbay trees.What is the best way for homeowners to dispose of dead redbay trees to avoid spreading laurel wilt? This 4-page fact sheet summarizes a UF/IFAS study providing evidence that a simple technique — chipping the dead trees — can help contain the disease within a small area and that there is a low probability of long-distance movement of LW via wood chips. Written by Don Spence, Jason Smith, Albert Mayfield III, Jiri Huler, Randy Ploetz and Lukasz Stelinski, and published by the UF Department of School of Forest Resources and Conservation, November 2011.

HS1137/HS391 Laurel Wilt: A Threat to Redbay, Avocado and Related Trees in Urban and Rural Landscapes

HS-1137, a 6-page illustrated fact sheet by Albert E. Mayfield III, Jonathan H. Crane and Jason A. Smith, describes for homeowners this fungal disease of trees in the laurel family that is carried by the non-native redbay ambrosia beetle. Includes descriptions of the beetles, plant hosts, impact, host symptoms, and management strategies. Includes references. Published by the UF Horticultural Sciences Department, March 2008.