Japanese beetle was first detected in Colorado in the early 2000s and in Jeffco in 2008. This beetle feeds on over 300 types of plants. Adults feed on flowers, fruit, vegetables, and vegetation. Grubs, the immature stage, feed on roots, especially in turf.
The adults emerge in early summer, feed and lay eggs. The eggs overwinter and then hatch in early spring.
Control includes removal of adults, drying out of lawns during larval activity, and chemical applications. CSU Extension's Fact Sheet provides more information.
Spotted Lanternfly (Lycorma delicatula)
all images from bugwood.org
Spotted lanternfly is a pest that is new to North America. It was first found in Pennsylvania in 2014. It has not yet been found in Colorado but because it is easily moved in vehicles and on outdoor furniture, we need to be looking for it so that if it does arrive here, we are prepared to limit its spread.
Spotted lanternfly is a member of the planthopper order of insects (Hemiptera). Adults are about 1 in long. They have brownish-tan forewings that are folded over their body and brightly colored spotted underwings. Adults and immature stages feed by sucking plant juices. They excrete a honeydew, similar to aphids. The honeydew can host sooty mold.
While the host range includes 65+ types of plants, the preferred host is Tree of Heaven which is itself an invasive species.
Spotted lanternfly is a threat to Colorado's fruit, ornamental, and forest industries.
If you think you have found one please take a high-quality photo of it and send it to [email protected]