Flies

American Golden Longhorn (Callicera erratica)

Found in West Tisbury on May 3, 2025, a male Callicera erratica represented a new species of hoverfly for Martha’s Vineyard – and apparently for Massachusetts as well.

Stylogaster neglecta

Apparently a first record for Martha’s Vineyard, the Conopid fly Stylogaster neglecta was recently found outside the BiodiversityWorks office in Vineyard Haven.

Microdon fulgens on Martha’s Vineyard

The discovery of the “ant fly” Microdon fulgens on Martha’s Vineyard extends the known distribution of the colorful, mainly southern Syprhid fly by about 250 miles.

A New Robber Fly Species for Martha’s Vineyard

The tiny robber fly Atomosia puella was discovered among bees collected in bowl traps in 2021 at Thimble Farm, Tisbury.

Cyrtopogon falto

Cyrtopogon falto is the latest robber fly species (Asilidae) to be documented on Martha’s Vineyard.

Deer Bot Fly

An odd-looking fly with an even odder life history.

Sky Pirates!

Pyrgota undata, a boldly marked, largely nocturnal fly, is a parasite of May beetles, usually attacking its host in mid-air.

Colletes productus

A highly specialized bee, associated with the wetland shrub Lyonia ligustrina, is documented in iNaturalist.

Stiletto Flies

Perhaps because of their elongated shape, members of the fly family Therevidae have acquired the common name “stiletto flies.”

“Mystery Fly” on the Vineyard’s South Shore

A rarely reported, carrion-loving fly turns up on the southern shoreline of Martha’s Vineyard.