A German Yellowjacket in Frederick Co., Maryland (5/4/2018). Verified by Ben Coulter/BugGuide. Photo by Mark Etheridge. (MBP list)
German Yellowjackets in Allegany Co., Maryland (10/3/2012). German Yellowjackets are introduced to North America from Eurasia. Photo by Matt Tillett. (MBP list)
A German Yellowjacket in Harford Co., Maryland (11/19/2018). Photo by Dave Webb. (MBP list)
A German Yellowjacket in Baltimore City, Maryland (7/9/2007). Determined by Richard Vernier/BugGuide. Photo by Thomas Wilson. (MBP list)
A German Yellowjacket in Baltimore City, Maryland (7/9/2007). Determined by Richard Vernier/BugGuide. Photo by Thomas Wilson. (MBP list)
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