An insect of interest, the Asian Mud Dauber has recently been sighted in Colorado. Although first sighted in 2014 by Eric Eaton in El Paso County, several additional counties have reported sightings in 2018. It is believed to be more widespread with expanding territory in the future. If sighted, please report with photos to email@example.com.
The Asian mud dauber is not a pest of plants – it feeds on spiders. It prefers to nest in cavities such as areas of buildings, most notably around windows.
Colorado is the only state that has yet reported this insect; it is also known from Quebec and Ontario. Within Colorado there are records of it from five counties: El Paso, Douglas, Denver, Larimer, and Mesa.
Dr. Cranshaw would like to receive reports of this insect to track its spread in the state. This information will also help fill in some information gaps in its life history and habits in Colorado.
Please do not confuse the Asian Mud Dauber nests with the Black and Yellow Mud Dauber! The Asian Mud Dauber nest is pictured in the Wanted! poster below. The Black and Yellow Mud Dauber nest looks like this: