''Meromyza triangulina'' is a species of

fly Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced m ...

in the family

Chloropidae The Chloropidae are a family of flies commonly known as frit flies or grass flies. About 2000 described species are in over 160 genera distributed worldwide. These are usually very small flies, yellow or black and appearing shiny due to the virtu ...

, the grass flies. It is found in the

Palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Si ...

. The larvae feed on ''

Festuca ovina ''Festuca ovina'', sheep's fescue or sheep fescue, is a species of grass. It is sometimes confused with hard fescue (''Festuca trachyphylla''). General description It is a perennial plant sometimes found in acidic ground, and in mountain pastur ...

'' and ''

Festuca rubra ''Festuca rubra'' is a species of grass known by the common name red fescue or creeping red fescue. It is widespread across much of the Northern Hemisphere and can tolerate many habitats and climates. It is best adapted to well-drained soils in ...

''.Emilia. Petrovna Nartshuk and L. I. Fedoseeva A review of the grassflies of the genus ''Meromyza'' Meigen, 1830 (Diptera, Chloropidae) of the Palaearctic fauna, with a key to the species, analysis of synonymy, host specialization, and geographical distribution: Part 1 ''Entomological Review'' 91(1) · March 2011 DOI: 10.1134/S001387381101009
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References

Chloropinae Insects described in 1960 {{Chloropidae-stub