| 5024084 |
walnut twig beetle |
Pityophthorus juglandis |
Adult galleries and associated Geosmithia morbida infection in a ca. 10 cm. diameter branch. |
| 5443180 |
spruce beetle |
Dendroctonus rufipennis |
Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011. |
| 5443181 |
spruce beetle |
Dendroctonus rufipennis |
Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011 |
| 5443183 |
spruce beetle |
Dendroctonus rufipennis |
Tree mortality along White River in Rio Blanco County. This area was near the epicenter of the massive outbreak of this insect in the late 1940s. Photograph taken July 27, 2011 |
| 1326058 |
blue spruce engraver |
Ips hunteri |
Crown dieback symptom if infestation |
| 1326057 |
blue spruce engraver |
Ips hunteri |
Early crown fading symptom of infestation |
| 5422221 |
walnut twig beetle |
Pityophthorus juglandis |
emergence holes |
| 5422220 |
walnut twig beetle |
Pityophthorus juglandis |
Adult walnut twig beetle tunnel and surrounding canker produced by Geosmithia in southern California walnut. |
| 5024085 |
walnut twig beetle |
Pityophthorus juglandis |
Adult gallery and associated Geosmithia sp. infection. |
| 5382186 |
walnut twig beetle |
Pityophthorus juglandis |
Egg galleries produced under bark of large branch.
|
| 5382182 |
banded elm bark beetle |
Scolytus schevyrewi |
Recently constructed entrance hole with small amount of weeping at wound site.
|
| 5382184 |
walnut twig beetle |
Pityophthorus juglandis |
Exit holes.
|
| 5382164 |
mountain pine beetle |
Dendroctonus ponderosae |
Fresh pitch tubes
|
| 5382166 |
mountain pine beetle |
Dendroctonus ponderosae |
Fresh pitch tubes
|
| 5382167 |
mountain pine beetle |
Dendroctonus ponderosae |
Fresh pitch tubes
|
| 5382168 |
mountain pine beetle |
Dendroctonus ponderosae |
Adult excavating tunnel. Although this tree is still producing pitch, it has been heavily attacked by mountain pine beetle, and this adult beetle is excavating a larval gallery, treading the oozing pitch.
|
| 5382169 |
mountain pine beetle |
Dendroctonus ponderosae |
Adult excavating tunnel. Although this tree is still producing pitch, it has been heavily attacked by mountain pine beetle, and this adult beetle is excavating a larval gallery, treading the oozing pitch.
|
| 5382170 |
mountain pine beetle |
Dendroctonus ponderosae |
Fresh pitch tube
|
| 5382171 |
mountain pine beetle |
Dendroctonus ponderosae |
Adult killed in “pitch-out” of ponderosa pine
|
| 5382131 |
walnut twig beetle |
Pityophthorus juglandis |
Flagging of lower shaded branches infested with walnut twig beetle.
|
| 5382045 |
cedar bark beetles |
Phloeosinus spp. |
Twig die-back from maturation feeding by adult cedar bark beetles.
|
| 5382042 |
cedar bark beetles |
Phloeosinus spp. |
Twig die-back from maturation feeding by adult cedar bark beetles.
|
| 5382043 |
cedar bark beetles |
Phloeosinus spp. |
Twig die-back from maturation feeding by adult cedar bark beetle. The opening to the feeding site is at the center of the picture.
|
| 5382044 |
cedar bark beetles |
Phloeosinus spp. |
Twig die-back from maturation feeding by adult cedar bark beetle. The area of the feeding site has been cut away and exposed.
|
| 5082085 |
mountain pine beetle |
Dendroctonus ponderosae |
pitch out that successfully killed adult attempting to tunnel |
| 5024087 |
walnut twig beetle |
Pityophthorus juglandis |
Late summer wilting associated with twig beetle and general decline in late summer. |
| 5024088 |
walnut twig beetle |
Pityophthorus juglandis |
Extension larval tunnel in trunk area associated with Fusarium sp. infection. |
| 5024090 |
walnut twig beetle |
Pityophthorus juglandis |
Larvae associate with area of Fusarium infection on trunk. |
| 5024091 |
walnut twig beetle |
Pityophthorus juglandis |
Twig dieback associated with twig beetle infestation. |
