Grass Flies
family of suborder “Brachyceran Flies“
1 family
This text provides information about small flies belonging to the Opomyzidae family, with detailed descriptions of physical characteristics like wing patterns and bristle presence on the head. It lists species within the genera Anomalochaeta, Geomyza, Opomyza, and Scelomyza, along with their scientific names. The biology section mentions that the larvae of these flies live in grass stems, some of which can be harmful to crops like the Yellow Cereal fly. Various sources for identification and further study of Opomyzidae species are also provided. Links to external resources for additional information and illustrations are included.
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Description#
For terms see Morphology of Diptera. Small slender yellow, brown, reddish or black flies. The narrow wings are usually with light or dark-colored spots (darkly marked crossveins apical spot). Head with one pair of backwardly directed orbital (frontal bristles) bristles. Scattered interfrontal setulae are present Ocellar bristles are present. Postvertical bristles are absent (rarely present). Vibrissae absent but Geomyza with a strong bristle near the vibrissal angle. Ocelli are present and the arista is pubescent or with long hairs. Tibae without preapical dorsal bristles. R1 is short, the subcosta ends near the break of the costa (usually incomplete but apical part sometimes visible as a faint line reaching the costa) and near apex of R1;posterior basal wing cell and anal cell are small. The crossvein BM-Cu is present but usually incomplete. Tibiae without dorsal preapical bristle.
Species#
Genus Anomalochaeta Frey, 1910 Anomalochaeta guttipennis (Zetterstedt, 1838) Genus Geomyza Fallén, 1810
Geomyza angustipennis Zetterstedt, 1847 Geomyza apicalis (Meigen, 1830) Geomyza balachowskyi Mesnil, 1934 Geomyza breviseta Czerny, 1928 Geomyza hackmani Nartshuk, 1984 Geomyza hendeli Czerny, 1928 Geomyza majuscula (Loew, 1864) Geomyza nartshukae Carles-Tolrá, 1993 Geomyza subnigra Drake, 1992 Geomyza tripunctata Fallén, 1823 Geomyza venusta (Meigen, 1830) Genus Opomyza Fallén, 1820
Opomyza athamus (Séguy, 1928) Opomyza florum (Fabricius, 1794) Opomyza germinationis (Linnaeus, 1758 ) Opomyza limbatus (Williston, 1886) Opomyza lineatopunctata von Roser, 1840 Opomyza petrei Mesnil, 1934 Opomyza punctata Haliday, 1833 Opomyza punctella Fallén, 1820 Opomyza townsendi (Williston, 1898) Genus Scelomyza Séguy, 1938 Scelomyza hirticornis Séguy, 1938
Biology#
The larvae live in the stems of grasses, a few species being a pest in agriculture, for instance Opomyza florum, the Yellow Cereal fly. Damage caused by Opomyzidae to Gramineae is termed “dead heart”.
Identification#
E. Brunel, 1998 Family Opomyzidae. In: Papp, L. og Darvas, B. (red.): Contributions to a Manual of Palaearctic Diptera. 3: 259–266. Science Herald, Budapest Drake, C.M. 1993. A review of the British Opomyzidae. British Journal of Entomology and Natural History 6: 159–176. Hackman, W., 1958 The Opomyzidae (Dipt.) of Eastern Fennoscandia. Notulae Entomologicae 38 : 114–126. Czerny. 1930.Opomyzidae. In: Lindner, E. (Ed.). Die Fliegen der Paläarktischen Region 6, 1,54c, 1–15. Keys to Palaearctic species but now needs revision (in German). Séguy, E., 1934 Diptères: Brachycères. T.II. Muscidae acalypterae, Scatophagidae. Paris: Éditions Faune de France 28.BibliothequeVirtuelleNumerique pdf Stackelberg,A.A., 1988 Family Opomyzidae in Bei-Bienko, G. Ya, 1988 Keys to the insects of the European Part of the USSR Volume 5 (Diptera) Part 2 English edition. Keys to Palaearctic species but now needs revision. Przemysław Trojan, 1962 Odiniidae, Clusiidae, Anthomyzidae, Opomyzidae, Tethinidae in (series) Klucze do oznaczania owadów Polski, 28,54/58; Muchowki = Diptera, 54/58 Publisher Warszawa : Państwowe Wydawnictwo Naukowe
External links#
Opomyzidae in Italian Family description Gallery of Opomyzidae Family Opomyzidae at EOL images Geomyza illustrations Encyclopedia of Life World taxa list Jindřich Roháček
This text provides information about small flies belonging to the Opomyzidae family, with detailed descriptions of physical characteristics like wing patterns and bristle presence on the head. It lists species within the genera Anomalochaeta, Geomyza, Opomyza, and Scelomyza, along with their scientific names. The biology section mentions that the larvae of these flies live in grass stems, some of which can be harmful to crops like the Yellow Cereal fly. Various sources for identification and further study of Opomyzidae species are also provided. Links to external resources for additional information and illustrations are included.
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