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Cerodontha (Poemyza) pygmaea (Meigen, 1830) [Diptera: Agromyzidae] Agromyza pygmaea Meigen, 1830. Syst. Beschr. 6: 183. Dizygomyza (Poemyza) verrucosa Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 61. Phytobia (Poemyza) lapplandica Rydén, 1956. Opusc. ent. 21: 195. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Nowakowski, 1962. Annls zool., Warsz. 20: 112. Dizygomyza (Poemyza) verrucosa Hendel, 1831; Nowakowski, 1967. Polskie Pismo ent. 37: 651. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Nowakowski, 1967. Polskie Pismo ent. 37: 651. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Nowakowski, 1972. Polskie Pismo ent. 42(4): : 747. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 104. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Spencer, 1976. Fauna ent. Scand. 5(1): 198-9, fig. 348. Cerodontha (Poemyza) pygmaea (Meigen, 1830); Spencer, 1990. Host specialization in the world Agromyzidae (Diptera) : 354, 355, 356, 369, 370 (fig. 1386).

Leaf-mine: Normally several larvae feed together. Pupation in the mine (Spencer, 1976: 198). Larva: Nowakowski (1973) gives details of the larva. Posterior spiracles each with 3 bulbs (Spencer, 1976: 198). Puparium: Shining black (Spencer, 1976: 198), larvae individially anchored within the mine with a silken thread attached at their rear end (Nederlandse bladmineerders). Hosts in Britain: Poaceae       Arrhenatherum     Robbins, 1991: 140 Arrhenatherum elatius False Oat-grass Mines in BMNH Arrhenatherum elatius False Oat-grass Robbins, 1989: 21 Brachypodium     Robbins, 1991: 137 Brachypodium sylvaticum False Brome Mines in BMNH Brachypodium sylvaticum False Brome Robbins, 1989: 21 Brachypodium sylvaticum False Brome Spencer, 1972b: 122 Bromus     Mines in BMNH Bromus     Robbins, 1991: 137 Bromus spp.   Spencer, 1972b: 123 Bromus ramosus Hairy-brome Robbins, 1989: 21 Calamagrostis     Pitkin, in Pitkin & Plant, 2005 Dactylis glomerata Cock's-foot Spencer, 1972b: 123 Deschampsia     Robbins, 1991: 137 Deschampsia     Spencer, 1972b: 104 Deschampsia cespitosa Tufted Hair-grass Mines in BMNH Deschampsia cespitosa Tufted Hair-grass Robbins, 1989: 21 Deschampsia cespitosa Tufted Hair-grass Spencer, 1972b: 123 Elymus     Robbins, 1991: 137 Elymus repens Common couch Robbins, 1989: 21 Festuca spp.   Spencer, 1972b: 104 Festuca ovina Sheep's Fescue Robbins, 1989: 21 Holcus     Robbins, 1983: 23 Lolium perenne Perennial Rye-grass Mines in BMNH Molinia caerulea Purple Moor-grass Spencer, 1972b: 124 Phalaris     Robbins, 1991: 137 Phalaris arundinacea Reed Canary-grass Robbins, 1989: 21 Hosts elsewhere: Poaceae       Agropyron     Spencer, 1990: 356 Agropyron     Spencer, 1976: 198 Agropyron     Nederlandse bladmineerders Agrostis     Spencer, 1976: 198 Agrostis     Spencer, 1990: 354 Agrostis capillaris Common Bent Nederlandse bladmineerders Agrostis stolonifera Creeping Bent Nederlandse bladmineerders Ammophila     Spencer, 1990: 354 Apera     Spencer, 1990: 354 Apera spica-venti Loose Silky-bent Nederlandse bladmineerders Arrhenatherum     Spencer, 1990: 354 Arrhenatherum elatius False Oat-grass Nederlandse bladmineerders Avena     Spencer, 1990: 354 Avena sativa Oat Nederlandse bladmineerders Brachypodium     Spencer, 1990: 355 Brachypodium pinnatum   Nederlandse bladmineerders Brachypodium sylvaticum False Brome Spencer, 1976: 198 Brachypodium sylvaticum False Brome Nederlandse bladmineerders Bromus     Nederlandse bladmineerders Bromus     Spencer, 1990: 354 Calamagrostis canescens Purple Small-reed Nederlandse bladmineerders Calamagrostis epigejos Wood Small-reed Nederlandse bladmineerders Calammophila baltica   Nederlandse bladmineerders Dactylis     Spencer, 1990: 355 Dactylis glomerata Cock's-foot Spencer, 1976: 198 Dactylis glomerata Cock's-foot Nederlandse bladmineerders Dactylis polygama Slender Cock's-foot Nederlandse bladmineerders Deschampsia     Spencer, 1990: 354 Deschampsia cespitosa Tufted Hair-grass Nederlandse bladmineerders Elymus caninus Bearded Couch Nederlandse bladmineerders Elymus repens Common Couch Nederlandse bladmineerders Festuca     Spencer, 1976: 198 Festuca     Spencer, 1990: 355 Festuca altissima Wood Fescue Nederlandse bladmineerders Festuca gigantea Giant Fescue Nederlandse bladmineerders Glyceria     Nederlandse bladmineerders Glyceria     Spencer, 1990: 354 Holcus     Spencer, 1976: 198 Holcus     Spencer, 1990: 354 Holcus lanatus Yorkshire-fog Nederlandse bladmineerders Hordeum vulgare Six-rowed Barley Nederlandse bladmineerders Lolium     Spencer, 1990: 355 Lolium perenne Perennial Rye-grass Nederlandse bladmineerders Molinia caerulea Purple Moor-grass Nederlandse bladmineerders Phalaris     Nederlandse bladmineerders Phleum     Spencer, 1976: 198 Phleum     Spencer, 1990: 355 Phleum pratense Timothy Nederlandse bladmineerders Phragmites australis Common Reed Nederlandse bladmineerders Poa     Spencer, 1976: 198 Poa     Spencer, 1990: 355 Poa compressa Flattened Meadow-grass Nederlandse bladmineerders Poa pratensis Smooth Meadow-grass Nederlandse bladmineerders Poa trivialis Rough Meadow-grass Nederlandse bladmineerders Secale cereale Rye Nederlandse bladmineerders Triticum aestivum Bread Wheat Nederlandse bladmineerders Time of year - mines: Unknown. Time of year - adults: June-August. Distribution in Britain: Widespread and common in Great Britain including Dunbarton (Bonhill) (Spencer, 1972b: 104), Warwick (Coventry, Holbrooks) (Robbins, 1991: 137) and Hunts, North Hants, Northampton and Surrey (NBN Gateway distribution map - DF and NE). Also recorded in the Republic of Ireland: Co. Clare (Spencer, 1972b: 104). Distribution elsewhere: Holarctic. Widespread and frequently common in much of Europe including Denmark, Sweden, Finland (Spencer, 1976: 198), The Netherlands (Nederlandse bladmineerders), Belgium (Scheirs & de Bruyn, 1992), Germany (Spencer, 1976: 554), Austria, Canary Is., Czech Republic, Estonia, French mainland, Hungary, Italian mainland, Latvia, Lithuania, Madeira, Poland, Slovakia, Spanish mainland and Yugoslavia (Martinez in Fauna Europaea). Also recorded in Alaska and Canada (Spencer, 1976: 198). Parasitoids: Chrysocharis gemma (Walker, 1839) Hymenoptera: Eulophidae Chrysocharis polyzo (Walker, 1839) Hymenoptera: Eulophidae Hemiptarsenus unguicellus (Zetterstedt, 1838) Hymenoptera: Eulophidae Merismus megapterus Walker, 1833 Hymenoptera: Pteromalidae

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Last updated 30-Sep-2008  Brian Pitkin