Christmas trees are popular holiday decorations. Occasionally, the carefully selected tree will harbor a number of insects and small arthropods. These may be a nuisance but are typically not harmful. Penn State has a guide to commonly encountered insects and how to address them.
First, it is useful to not introduce insects. A tree should be inspected before bringing it indoors. Some vendors have shakers to physically remove loose needles and twigs. Shakers will also dislodge small…
Source: Living With Insects Blog