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Phytomyza calthophila Hering, 1931 [Diptera: Agromyzidae] Phytomyza calthophila Hering, 1931b. Z. PflKrankh. 41: 539. Phytomyza calthophila Hering, 1931b; Hendel, 1934. Fliegen palaearkt. Reg. 6(2): 368. Phytomyza calthophila Hering, 1931b; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 91 (fig. 313), 94, 118. Phytomyza calthophila Hering, 1931b; Spencer, 1976. Fauna ent. Scand. 5 (1): 396-7, figs 692-4. Phytomyza calthophila Hering, 1931b; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 21, 23, 25 (figs 43-5), 169, 207.

Leaf-mine: Larva forming a long, narrow, upper surface mine. Pupation external (Spencer, 1972b: 91 (fig. 313); Spencer, 1976: 394 (fig. 694), 395). Larva: The larva is described by de Meijere (1926, as nigritella). Puparium: Brown; posterior spiracles greatly enlarged, each with 40 minute bulbs (Spencer, 1976: 395). Hosts in Britain: Ranunculaceae       Caltha     Robbins, 1991: 26 Caltha palustris Marsh Marigold Mines in BMNH Caltha palustris Marsh Marigold Spencer, 1972b: 118 Caltha palustris Marsh Marigold Bland, 1992 Hosts elsewhere: Ranunculaceae       Caltha     Spencer, 1990: 21 Caltha palustris Marsh Marigold Spencer, 1976: 396 Caltha palustris Marsh Marigold Nederlandse bladmineerders Time of year - mines: July, September. Time of year - adults: August. Distribution in Britain: Widespread but local. Wilts (Corsham), Cambridge (Whittelstone), Norfolk (Norwich), Westmorland (Grasmere), York (Malham Tarn) (Spencer, 1972b: 94), Inner Hebrides (Isle of Coll) (Bland, 1992), Warwick (Sutton Park) (Robbins, 1991) and East Sutherland (NBN Gateway distribution map - HBRG). Also recorded in the Republic of Ireland: Co. Clare (Spencer, 1972b: 94). Distribution elsewhere: Europe including Denmark, Finland, Norway, Sweden (Spencer, 1976: 396), The Netherlands (Nederlandse bladmineerders), Belgium (de Bruyn & von Tschirnhaus, 1991), Germany (Spencer, 1976: 570), Czech Republic, Lithuania and Poland (Martinez in Fauna Europaea). Parasitoids: Chrysocharis orbicularis (Nees, 1834) Hymenoptera: Eulophidae Chrysocharis pentheus (Walker, 1839) Hymenoptera: Eulophidae Chrysocharis viridis (Nees, 1934) Hymenoptera: Eulophidae Seladerma scaea (Walker, 1844) Hymenoptera: Pteromalidae

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Last updated 30-Sep-2008  Brian Pitkin