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Chromatomyia ramosa (Hendel, 1923) [Diptera: Agromyzidae] Teasel fly Phytomyza ramosa Hendel, 1923a. Dt. ent. Z. 1923(4): 387. Phytomyza olgae Hering, 1925b. Dt. ent. Z. 1925(5): 527. Phytomyza nigriventris Hendel, 1935. Fliegen palaearkt. Reg. 6(2): 440. [Synonymised by Spencer, 1976: 479]. Phytomyza olgae Hering, 1925b; Spencer, 1971a. Ent. Gaz. 22: 191. Phytomyza nigritella Zetterstedt, 1848; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 95. [Misidentification]. Phytomyza ramosa Hendel, 1923a; Spencer, 1976. Fauna ent. Scand. 5(1): 478-80, figs 842-4. Chromatomyia ramosa (Hendel, 1923a); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 244, 245 (figs 923-5).

Leaf-mine: Larvae feeding primarily along mid-rib, forming short lateral mines into the leaf blade. Pupation within the mid-rib (Spencer, 1976: 480). The mine is illustrated in Nederlandse bladmineerders. Mine of Chromatomyia ramosa on Dipsacus pilosus. Image: Willem Ellis (Source: Nederlands bladmineerders Larva: The winter is passed as a young larva in the basal rosette of leaves and it starts feeding again in early spring (Spencer, 1976: 480). The larva is described by de Meijere (1926 and 1928). Puparium: White (Spencer, 1976: 480). Hosts in Britain: Dipsacaceae       Dipsacus     Robbins, 1991: 108, as nigritella Dipsacus arvensis   Mines in BMNH Dipsacus fullonum Wild Teasel Spencer, 1972b: 116, as nigritella Dipsacus fullonum Wild Teasel Mines in BMNH Knautia arvensis Field Scabious Spencer, 1972b: 116, as nigritella Succisa pratensis Devil's-bit Scabious Spencer, 1972b: 116, as nigritella Succisa pratensis Devil's-bit Scabious Bland, 1992 Succisa pratensis Devil's-bit Scabious Bland, 1994 Hosts elsewhere: Dipsacaceae       Dipsacus     Spencer, 1976: 480 Dipsacus     Spencer, 1990: 244 Dipsacus pilosus Small Teasel Nederlandse bladmineerders Knautia     Spencer, 1990: 244 Knautia arvensis Field Scabious Nederlandse bladmineerders Knautia arvensis Field Scabious Spencer, 1976: 480 Scabiosa columbaria Small Scabious Nederlandse bladmineerders Succisa     Spencer, 1976: 480 Succisa     Spencer, 1990: 244 Succisa pratensis Devil's-bit Scabious Nederlandse bladmineerders Time of year - mines: March-April, June-October. Time of year - adults: There are at least two generations per year. Distribution in Britain: Widespread in southern Britain, also Perth (Killin) (Spencer, 1972b: 95, as nigritella), the Inner Hebrides (Isle of Coll) (Bland, 1992) and Surrey (NBN Gateway distribution map - NE). Distribution elsewhere: Widespread in Europe, including Denmark, Finland, Norway, Sweden (Spencer, 1976: 480), The Netherlands (Nederlandse bladmineerders), Germany (Spencer, 1976: 578), Belarus, Czech Republic, Estonia, Finland, French mainland, Italian mainland, Latvia, Lithuania, Poland, Slovakia, Spanish mainland and Switzerland (Martinez in Fauna Europaea). Parasitoids: Chrysocharis orbicularis (Nees, 1834) Hymenoptera: Eulophidae Chrysocharis viridis (Nees, 1934) Hymenoptera: Eulophidae Pachyneuron muscarum (Linnaeus, 1758) Hymenoptera: Eulophidae Sphegigaster pallicornis (Spinola, 1808) Hymenoptera: Eulophidae Stenomalina gracilis (Walker, 1834) Hymenoptera: Pteromalidae

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Last updated 30-Sep-2008  Brian Pitkin