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robber fly
noun
: any of a family (Asilidae) of predaceous dipteran flies including some resembling bumblebees
Examples of robber fly in a Sentence
Recent Examples on the Web
But to photographer Steven Mahy, finding this robber fly was a stroke of luck.
—Carlyn Kranking, Smithsonian Magazine, 12 July 2024
There are nearly 7,000 different species of robber flies in the world — about 1,000 in North America alone.
—Stephen C. George, Discover Magazine, 8 May 2023
And to keep grasshoppers at bay, plant marigolds, calendula, or sunflowers nearby to attract robber flies, which attack grasshoppers.
—Deb Wiley, Better Homes & Gardens, 25 Apr. 2023
The robber fly was chosen because of its highly predictable interception path to catch prey.
—Jennifer Ouellette, Ars Technica, 15 Feb. 2022
Karin Nordstrom at Flinders University tells Yong that this study raises the possibility that other predator insects including robber flies and dragonflies also use stereopsis.
—Jason Daley, Smithsonian, 10 Feb. 2018
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Word History
First Known Use
1869, in the meaning defined above
Dictionary Entries Near robber fly
Cite this Entry
“Robber fly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/robber%20fly. Accessed 5 Nov. 2024.
Kids Definition
robber fly
noun
: any of various two-winged flies that eat insects and are covered with coarse bristly hairs
More from Merriam-Webster on robber fly
Britannica.com: Encyclopedia article about robber fly
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