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sandfly

American  
[sand-flahy] / ˈsændˌflaɪ /

noun

sandflies plural
  1. any of several small, bloodsucking, dipterous insects of the family Psychodidae that are vectors of several diseases of humans.

  2. any of several other small, bloodsucking, dipterous insects, as one of the family Heleidae or Simuliidae.


sandfly British  
/ ˈsændˌflaɪ /

noun

  1. any of various small mothlike dipterous flies of the genus Phlebotomus and related genera: the bloodsucking females transmit diseases including leishmaniasis: family Psychodidae

  2. any of various similar and related flies

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of sandfly

First recorded in 1675–85; sand + fly 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The sandfly commonly shelters in cracks in poorly plastered mud houses, anthills and soil fissures, multiplying during the rainy season after prolonged drought.

From Barron's Feb. 8, 2026

The team from the University of Nottingham's School of Chemistry analysed the genome of the Lutzomyia longipalpis, a species of sandfly native to Brazil and South America that can spread a disease called Leishmaniasis.

From Science Daily Mar. 11, 2024

Over 90 sandfly species are known to transmit Leishmania parasites that are spread to humans through being bitten, but Lutzomyia longipalpis is themajor carrier of the disease in South America.

From Science Daily Mar. 11, 2024

Nobody has ever found out how the sandfly acquires its parasite, where it lays its eggs, why it seems to have thrived only in one narrow area.

From Time Magazine Archive

There, in the spring of 1955, some 2000 acres of salt marsh in St. Lucie County were treated with dieldrin in an attempt to eliminate the larvae of the sandfly.

From "Silent Spring" by Rachel Carson

A surge in cases among migrant workers at a quarry site in Mandera last year led authorities to restrict movement at dusk and dawn when sandflies are most active.

From Barron's Feb. 8, 2026

In the region’s brief summer, sandflies and other biting insects make the most of the warmth by exploding in population and feeding on black bears, wolves and humans.

From The Guardian Jul. 26, 2019

The pet-disease watch list includes infections spread by the growing populations of mosquitoes, ticks, sandflies and fleas, such as heartworm, lungworm, Lyme disease and leishmaniasis.

From Nature Mar. 28, 2017

But fewer could name the disease spread by those pesky sandflies: The ulcerating skin infection called leishmaniasis.

From Seattle Times Apr. 25, 2011

“If you’re not going in, Crow, the sandflies are,” Mrs. Aaronson said.

From "Beyond the Bright Sea" by Lauren Wolk

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