balsam gall midge
1Christmas tree pests and weeds — An entomologist checks Scots Pine for pine shoot beetles at a Christmas tree farm near East Lansing, Michigan. Pine and fir trees, grown purposely for use as Christmas trees, are vulnerable to a wide variety of pests, weeds and diseases. Many of… …
2Aphid — This article is about the insect. For other uses, see Aphid (disambiguation). Aphids Temporal range: Permian–Present …
