HL Issue 4 2009

HL Issue 3 2009

HL Issue 2 2009

What's Hot HL Issue 5

Digger bee visiting a flower. Photo by: Whitney Cranshaw, Colorado State University, Bugwood.org.

Digger bee hole in the soil. Photo found at: http://www.entomology.wisc.edu/diaglab/08hilite/05-07.html and probably taken by Pat Finley.

Digger bee adult. Photo found at: http://www.entomology.wisc.edu/diaglab/08hilite/05-07.html.

White prunicola scale found on lilac. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Weed Hotline Issue 5

Poa annua (annual bluegrass) in a lawn. Photo by: Steve Dewey, Utah State University, Bugwood.org.

Poa annua plant. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Leaf tip of annual bluegrass plant. Note the canoe-shaped tip. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Annual bluegrass seeds. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Downy brome in daylily beds.

Downy brome in daylily beds.

Disease Hotline Issue 5

Entomosporium leaf spot on cherry laurel and photinia.

Volutella blight on the stem of pachysandra.

Volutella blight symptoms on pachysandra leaves.

Coleosporium rust (Aster rust) on loblolly pine needles. All photos provided by: Bob Mulrooney, Plant Pathology Specialist, University of Delaware.

Insect Hotline Issue 5

Damage (blisters) and pupae of boxwood leafminer. Photo by: John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org.

Pictures of boxwood leafminer adults. Photo found at: http://www.ces.ncsu.edu/depts/ent/notes/O&T/shrubs/ort016e/ort016e.htm.

Close-up of boxwood leafminer larvae. Photo by: Nancy Gregory, Plant Diagnostician, University of Delaware.

Disease Hotline Issue 4

Damage and symptoms of pine wilt nematode. Photo by: Robert Lambe, Virginia Polytechnic Institute and State University, Bugwood.org.

Close-up of damage, one year after tree death. Photo by: USDA Forest Service - Rocky Mountain Region Archive, USDA Forest Service, Bugwood.org.

Cerambycid (Longhorn) beetles transmit the nematode to susceptible trees. Photo by: L.D. Dwinell, USDA Forest Service, Bugwood.org.

Nematode in an axial resin canal of Pinus densiflora. Photo by: Y. Mamiya, Bugwood.org.

The nematodes also feed on blue stain fungi which often invade dead, dying, or fresh cut timeber. Photo by: USDA Forest Service - North Central Research Station Archive, USDA Forest Service, Bugwood.org.

Insect Hotline Issue 4

White pine weevil adult. Photo by: Natasha Wright, Florida Department of Agriculture and Consumer Services, Bugwood.org.

White pine weevil damage. Photo by: Daniel Herms, The Ohio State University, Bugwood.org.

White pine weevil larvae. Photo by: William M. Ciesla, Forest Health Management International, Bugwood.org.

Weed Hotline Issue 4

Large crabgrass. Photo by: Richard Old, XID Services, Inc., Bugwood.org.

Goosegrass. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Goosegrass plants. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Goosegrass flowers. Photo by: Richard Old, XID Services, Inc., Bugwood.org.

Nimblewill. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org.

Nimblewill roots and stolons. Photo by: Joseph M. DiTomaso, University of California - Davis, Bugwood.org.

Cultural Hotline Issue 3

Salt injury on plants near a sidewalk. Image was found at http://www.ppdl.purdue.edu/PPDL/weeklypics/1-22-07.html.

Disease Hotline Issue 3

Rhabdocline needle cast on Douglas fir. Notice red spots and traverse banding on infected needles. Photo by: John W. Schwandt, USDA Forest Service, Bugwood.org.

Rhabdocline needlecast on Douglas fir. Photo by: Bob Mulrooney, Plant Pathology Specialist, University of Delaware.

Symptoms of Rhizosphaera needle cast. Photo by: Joseph O'Brien, USDA Forest Service, Bugwood.org.

Healthy needle (bottom) and needle infected (top) with Rhizosphaera needle cast. Photo by: Michael Kangas, NDSU - North Dakota Forest Service, Bugwood.org.

Fruiting bodies of Rhizospaera needle cast. Photo by: Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org.

Insect Hotline Issue 3

Distant view of Eastern tent caterpillar nest. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Close-up of Eastern tent caterpillar nest. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Eastern tent caterpillar larva. Photo by: Lacy L. Hyche, Auburn University, www. insectimages.org.

Adult Eastern tent caterpillars. Photo by: Lacy L. Hyche, Auburn University, www. insectimages.org.

Eastern tent caterpillar egg mass. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Cultural Hotline Issue 2

Image found at: http://www.hutchesonsand.com/images/sportfields/topdressing.jpg