cluster fly

noun

Any of several species of Pollenia, especially Pollenia rudis, with the habit of congregating in dwellings over the winter.

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Meanings

nouncluster fly (plural cluster flies)

plural cluster flies

  1. Any of several species of Pollenia, especially Pollenia rudis, with the habit of congregating in dwellings over the winter.

    Cluster flies (Pollenia rudis (Fabricius) ) become a serious problem and a major pest in rural homes, churches, and other structures in the autumn when they enter buildings to hibernate, and again in the spring when they seek ways to escape to the outside.

    1960 July 1, David Pimentel, Benjamin Epstein, “The Cluster Fly, Pollenia rudis (Diptera: Calliphoridae)”, in Annals of the Entomological Society of America, volume 43, number 4, →DOI
Cite this entry
APA

cluster fly. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/cluster%20fly

MLA

“cluster fly.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cluster%20fly. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “cluster fly,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/cluster%20fly.

Source: cluster fly on Wiktionary, CC BY-SA 4.0.