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Liriomyza strigata (Meigen, 1830) [Diptera: Agromyzidae] Agromyza strigata Meigen, 1830. Syst. Beschr. 6: 186. Agromyza pumila Meigen, 1830. Syst. Beschr. 6: 185. Agromyza violae Curtis, 1844. Gardeners' Chron. 1844 (April 20): 244. Agromyza strigata Meigen, 1830; Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 931. Agromyza galeopsios Hardy, 1853c. The Scottish Gardener 2(12): 370-3. [Synonymised by Bland, 2000: 11]. Liriomyza strigata (Meigen, 1830); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 7, 10, 48, 51 (figs 171-2), 55, 111-117, 121. Liriomyza strigata (Meigen, 1830); Spencer, 1976. Fauna ent. Scand. 5(1): 270-2, figs 484-6. Liriomyza strigata (Meigen, 1830); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 263, 264 (figs 996-8), 382-384, & more. Agromyza galeopsios Hardy, 1853c; Bland, 2000. Dipterists Digest 7: 11.

Leaf-mine: A distinctive mine primarily above mid-rib, with irregular short lateral offshoots into leaf blade. Pupation external (Spencer, 1972b: 51 (fig. 172), 55; Spencer, 1976: 270, 271 (fig. 486)). The mine is illustrated in British leafminers and Nederlandse bladmineerders.     Mines of Liriomyza strigata on Sonchus. Image: Crown copyright - courtesy of CSL Larva: The larva is described by Dempewolf (2001: 152). Posterior spiracles each with an ellipse of 10-12 bulbs (Spencer, 1972b: 55. Puparium: Posterior spiracles each with an ellipse of 10-12 bulbs (Spencer, 1972b: 55. Comments: A polyphagous species recorded here from 240 host plant genera in 35 plant families worldwide and 47 host plant genera in 15 plant families in Britain. Diagnostic protocols to distinguish L. strigata from bryoniae, huidobrensis and sativae, may be found at www.csl.gov.uk/specialInterest/liriomyza.pdf Hosts in Britain:: Apiaceae       Hydrocotyle vulgaris Marsh Pennywort Spencer, 1972b: 121 Asteraceae       Achillea ptarmica Sneezewort Mines in BMNH Artemisia absinthium Wormwood Mines in BMNH Artemisia absinthium Wormwood Robbins, 1991: 117 Artemisia absinthium Wormwood Spencer, 1972b: 111 Artemisia vulgaris Mugwort Spencer, 1972b: 111 Aster     Spencer, 1972b: 55 Bidens cernua Nodding Bur-marigold Mines in BMNH Bidens tripartita Trifid Bur-marigold Mines in BMNH Bidens tripartita Trifid Bur-marigold Spencer, 1972b: 56 Calendula officinalis Perennial Pot Marigold Mines in BMNH Centaurea     Robbins, 1983: 22 Centaurea     Spencer, 1972b: 55 Centaurea cyanus Cornflower Spencer, 1972b: 112 Centaurea jacea Brown Knapweed Mines in BMNH Centaurea montana Perennial Cornflower Robbins, 1991: 122 Centaurea nigra Common Knapweed Mines in BMNH Centaurea nigra Common Knapweed Spencer, 1972b: 112 Chrysanthemum morifolium   Mines in BMNH Cicerbita macrophylla Common Blue-sow-thistle Spencer, 1972b: 112 Cichorium intybus Chicory Mines in BMNH Cichorium intybus Chicory Spencer, 1972b: 112 Cirsium dissectum Meadow Thistle Spencer, 1972b: 112 Cirsium palustre Marsh Thistle Mines in BMNH Cirsium palustre Marsh Thistle Spencer, 1972; 112 Coreopsis grandiflora Large-flowered Tickseed Mines in BMNH Dahlia sp.   Spencer, 1972b: 113 Dahlia pinnata Dahlia Pitkin, in Pitkin & Plant, 2005 Eupatorium cannabinum Hemp-agrimony Mines in BMNH Eupatorium cannabinum Hemp-agrimony Spencer, 1972b: 113 Gaillardia     Mines in BMNH Gazania     Spencer, 1973a Helianthus annuus Sunflower Spencer, 1972b: 113 Hieracium     Robbins, 1991: 123 Iva xanthiifolia Marsh-elder Mines in BMNH Iva xanthiifolia Marsh-elder Spencer, 1972b: 113 Lactuca     Pitkin in Pitkin & Plant, 2005 Lactuca bourgaei   Spencer, 1972b: 113 Lapsana communis Nipplewort British leafminers Lapsana communis Nipplewort Mines in BMNH Lapsana communis Nipplewort Spencer, 1972b: 114 Leucanthemum maximum   Robbins, 1991: 116 Pericallis hybrida Cineraria Spencer, 1973a Picris hieracioides Oxtongue Mines in BMNH ? Scabiosa columbaria   Pitkin, in Pitkin & Plant, 2005 Senecio     Robbins, 1991: 110 Senecio aquaticus Marsh Ragwort Spencer, 1972b: 114 Senecio jacobaea Common Ragwort Mines in BMNH Senecio jacobaea Common Ragwort Spencer, 1972b: 114 Solidago canadensis Goldenrod Mines in BMNH Sonchus     Robbins, 1991: 123 Sonchus arvensis Perennial Sow-thistle Mines in BMNH Sonchus arvensis Perennial Sow-thistle Tony Marshall (pers. comm.) Sonchus asper Prickly Sow-thistle Mines in BMNH Sonchus asper Prickly Sow-thistle Spencer, 1972b: 115 Sonchus oleraceus Smooth Sow-thistle Mines in BMNH Sonchus oleraceus Smooth Sow-thistle Spencer, 1972b: 115 Sonchus palustris Marsh Sow-thistle Mines in BMNH Tanacetum     Spencer, 1973a Tanacetum vulgare Tansy Mines in BMNH Tanacetum vulgare Tansy Robbins, 1991: 117 Taraxacum     Robbins, 1991: 123 Taraxacum officinale Dandelion Spencer, 1972b: 115 Brassicaceae       Brassica     Robbins, 1983: 22 Capsella bursa-pastoris Shepherd's-purse Mines in BMNH Capsella bursa-pastoris Shepherd's-purse Spencer, 1972b: 115 Campanulaceae       Campanula     Mines in BMNH Campanula glomerata Clustered Bellflower Mines in BMNH Campanula glomerata Clustered Bellflower Mines in BMNH Campanula medium Canterbury-bells Mines in BMNH Campanula trachelium Nettle-leaved Bellflower Mines in BMNH Campanula trachelium Nettle-leaved Bellflower Robbins, 1991: 105 Campanula trachelium Nettle-leaved Bellflower Spencer, 1972b: 110 Convolvulaceae       Ipomoea     Mines in BMNH Ipomoea sp.   Spencer, 1972b: 115 Dipsacaceae   Scabiosa columbaria Small Scabious Pitkin, in Pitkin & Plant, 2005 Euphorbiaceae       Euphorbia amygdaloides Wood Spurge Mines in BMNH Mercurialis perennis Dog's Mercury Tony Marshall (pers. comm.) Fabaceae       Lupinus     Mines in BMNH Lupinus sp.   Spencer, 1972b: 117 Vicia faba Broad Bean Robbins, 1991: 47 Lamiaceae       Galeopsis     Robbins, 1991: 103 Galeopsis tetrahit Common Hemp-nettle Mines in BMNH Galeopsis tetrahit Common Hemp-nettle Spencer, 1972b: 116 Lamium     Robbins, 1991: 102 Lamium album White Dead-nettle Mines in BMNH Lamium album White Dead-nettle Spencer, 1972b: 116 Linaceae       Linum     Robbins, 1991: 38 Malvaceae       Althaea     Robbins, 1991: 37 Althaea rosea Hollyhock Mines in BMNH Althaea rosea Hollyhock Spencer, 1972b: 117 ? Malva   Pitkin, in Pitkin & Plant, 2005 Sidalcea     Robbins, 1991: 37 Papaveraceae       Meconopsis cambrica Welsh Poppy Pitkin, in Pitkin & Plant, 2005 Papaver somniferum Opium Poppy Mines in BMNH Polemoniaceae       Phlox drummondii Annual Phlox Spencer, 1973a Polemonium caerulum Jacob's-ladder British leafminers Resedaceae       Reseda     Robbins, 1991: 31 Valerianaceae       Centranthus     Robbins, 1991: 107 Centranthus     Mines in BMNH Centranthus     Spencer, 1972b: 121 Valerianaceae       Valeriana officinalis Common Valerian Mines in BMNH Valeriana officinalis Common Valerian Spencer, 1972b: 121 Violaceae       Viola tricolor Wild Pansy Spencer, 1973a Hosts elsewhere:The species is recorded on Acanthaceae, Amaranthaceae, Apiaceae, Asteraceae, Boraginaceae, Brassicaceae, Campanulaceae, Capparidaceae, Caryophyllaceae, Celastraceae, Chenopodiaceae, Convolvulaceae, Cucurbitaceae, Dipsacaceae, Euphorbiaceae, Fabaceae, Hydrophyllaceae, Lamiaceae, Liliaceae, Linaceae, Loasaceae, Malvaceae, Papaveraceae, Plantaginaceae, Polemoniaceae, Primulaceae, Resedaceae, Scrophulariaceae, Solanaceae, Valerianaceae, Verbenaceae and Violaceae. Time of year - mines: June-November. Time of year - adults: Unknown. Distribution in Britain: Widespread throughout Britain including Perth (Killin) (Spencer, 1972b: 55), Warwick (Coventry, Holbrooks) (Robbins, 1991), Bucks (Langley's Wood, nr. Holmer Green) (Tony Marshall, pers. comm.), Hants (Fleet) (British leafminers) and South Somerset and Surrey (NBN Gateway distribution map - GiGL and NE). Also recorded in the Republic of Ireland: Co. Clare (Spencer, 1972b: 55). Distribution elsewhere: Widespread and common in Europe including Denmark, Sweden, Norway, Finland (Spencer, 1976: 270), The Netherlands, Luxembourg (Nederlandse bladmineerders), Belgium (de Bruyn & von Tschirnhaus, 1991), Germany (Spencer, 1976: 558; Dempewolf, 2001: 152), Albania, Belarus, Corsica, Cyclades Is., Czech Republic, Dodecanese Is, Estonia, European Turkey, French mainland, Greek mainland, Italian mainland, Lithuania, Madeira, North Aegean Is., Poland, Romania, Slovakia, Spanish mainland and Switzerland (Martinez in Fauna Europaea). Range extending eastwards in the [former] U.S.S.R. to the Republics of Kirghiz, Kazakh and Uzbek (Spencer, 1976: 270). Parasitoids: Chrysocharis entedonoides (Walker, 1872) Hymenoptera: Eulophidae Chrysocharis orbicularis (Nees, 1834) Hymenoptera: Eulophidae Chrysocharis pallipes (Nees, 1834) Hymenoptera: Eulophidae Chrysocharis pubicornis (Zetterstedt, 1838) Hymenoptera: Eulophidae Diglyphus chabrias (Walker, 1838) Hymenoptera: Eulophidae Diglyphus isaea (Walker, 1838) Hymenoptera: Eulophidae Pediobius metallicus (Nees, 1834) Hymenoptera: Eulophidae Halticoptera smaragdina (Curtis, 1832) Hymenoptera: Pteromalidae

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Last updated 01-Oct-2008  Brian Pitkin