Thricops hirtulus

Sorokina, Vera S. & Pont, Adrian C., 2011, Fanniidae and Muscidae (Insecta, Diptera) associated with burrows of the Altai Mountains Marmot (Marmota baibacina baibacina Kastschenko, 1899) in Siberia, with the description of new species, Zootaxa 3118, pp. 31-44 : 36

Thricops hirtulus (Zetterstedt, [1838])

Material examined. 2 males and 1 female, RUSSIA, Respublika Altai, Kosh-Agachskiy rayon, verkhov’ya r. Naryn-Gol [upper River Naryn-Gol], 2520 m, 49º49'N 89º32'E, na surchinakh [from Marmot burrows], 15– 19.vii.2009, V. Sorokina (1 male and 1 female SZNM, 1 male OUMNH).

Comments. This species is probably an adventitious visitor to Marmot burrows, perhaps seeking shelter from the wind.