| 21. | Most feed on fungi, others are carnivores and eat small arthropods such as bark beetles.
|
| 22. | Colorado s forests are densely wooded, making them much more susceptible to bark beetle attack.
|
| 23. | There are several types of pine bark beetles, and all have a similar life history.
|
| 24. | Bark beetles fly in, bore through the tree's bark, and lay eggs under the bark.
|
| 25. | E-Myrcenol acts also as a pheromone for bark beetles.
|
| 26. | Multistriatin is a pheromone produced by female elm bark beetles, which can be produced synthetically.
|
| 27. | Two species of bark beetle, no larger than a pencil's eraser, are ravaging drought-weakened forests.
|
| 28. | SCI-BARK-BEETLES ( Plains, Mont . )-- Bark beetles are becoming a growing problem around the West.
|
| 29. | The disease dissolved the bark and entered the wood, leaving the tree vulnerable to bark beetles.
|
| 30. | Several trees also fell after being weakened by fire and a previous infestation of bark beetles.
|
