Phytomyza arnicae Hering, 1925
Upper-surface, rarely lower-surface, shallow, corridor, suddenly widening into a large blotch that may occupy almost the entire leaf, and may have some full-depth spots. Leaf around the mine sometimes with a red-violet discolouration. Frass in small, dispersed, granules. Pupation outside the mine.
Arnica angustifolia, montana.
Larvae in May to June (Hering, 1957a).
Not known from the Benelux countries
distribution within Europe
From Sweden to the Alps, and from Britain to Poland (Fauna Europaea, 2009).
Mandibles wth two teeth, only weakly alternating; no frontal appendage. Anterior spiracle with 10-13, posterior one with 15-20 papillae, both in an irregular arc (de Meijere, 1928a, 1937a).
Mountain species (Hering, 1957a).
Ahr (1966a), Buhr (1964a), Černý & Merz (2007a), Černý & Vála (1996a), Haase (1942a), Hering (1925b, 1926b, 1957a), Huber (1969a), de Meijere (1928a, 1937a), Spencer (1976a), von Tschirnhaus (1999a).