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Phytomyza calthivora Hendel, 1934 [Diptera: Agromyzidae] Phytomyza calthivora Hendel, 1934. Fliegen palaearkt. Reg. 6(2): 367. Phytomyza calthivora Hendel, 1934; Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 71, 91 (fig. 313), 94, 118, fig. 311. Phytomyza calthivora Hendel, 1934; Spencer, 1976. Fauna ent. Scand. 5 (1): 394-6, figs 688-91. Phytomyza calthivora Hendel, 1934; Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 6, 21, 23, 25 (figs 46-8), 169.

Leaf-mine: Mine linear but becoming very broad, up to 5mm, greenish, normally on lower leaves, near water (Spencer, 1972b: 91 (fig. 313), 94). Larva: Posterior spiracles greatly enlarged, each with two arms, the upper with a black finger-like extension 40-60 bulbs on the main process, with an additional 20-25 on the upper extension (Spencer, 1976: 394, 395 (fig. 691)). Puparium: Black (Spencer, 1976: 394, 395 (fig. 690)). Hosts in Britain: Ranunculaceae       Caltha palustris Marsh Marigold Bland, 1992 Caltha palustris Marsh Marigold Mines in BMNH Caltha palustris Marsh Marigold Spencer, 1972b: 118 Hosts elsewhere: Ranunculaceae       Caltha     Spencer, 1990: 21 Caltha palustris Marsh Marigold Spencer, 1976: 394 Caltha palustris Marsh Marigold Nederlandse bladmineerders Time of year - mines: June. Time of year - adults: Unknown. Distribution in Britain: Uncommon. Wilts (Corsham) (Spencer, 1972b: 94) and Inner Hebrides (Isle of Coll) (Bland, 1992). Distribution elsewhere: Europe including Denmark, Germany (Spencer, 1976: 394), Czech Republic, French mainland, Norwegian mainland and Poland (Martinez in Fauna Europaea). Parasitoids: Chrysocharis viridis (Nees, 1934) Hymenoptera: Eulophidae

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Last updated 30-Sep-2008  Brian Pitkin