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Hexomyza simplicoides (Hendel, 1920) [Diptera: Agromyzidae] Melanagromyza simplicoides Hendel, 1920. Arch. Naturgesch. 84A(7) (1918): 128. Melanagromyza simplicoides Hendel, 1920; Hendel, 1931. Fliegen palaearkt. Reg. 6(2): 178. Melanagromyza kirgizica Rohdendorf-Holmanova, 1959. Ent. Obozr. 38: 695. [Synonymised by Spencer, 1966a: 44]. Hexomyza simplicoides (Hendel, 1920); Spencer, 1966. Beitr. Ent. 16: 44. Hexomyza simplicoides (Hendel, 1920); Spencer, 1972b. Handbk ident. Br. Ins. 10(5g): 14 (figs 5-7), 15, 118-120. Hexomyza simplicoides (Hendel, 1920); Spencer, 1976. Fauna ent. Scand. 5(1): 38-9, figs 15-6. Hexomyza simplicoides (Hendel, 1920); Spencer, 1990. Host specialization in the World Agromyzidae (Diptera) : 80 (fig. 296), 81, 93.

Gall: An oval gall in the cortex of a twig (see Redfern et al, 2002: 433, fig. 816); several galls may coalesce round stem. Pupation internal. Larva: Details unknown. Puparium: Yellowish, but the front segments are bright reddish brown (see also Redfern et al, 2002: 433, fig. 817); posterior spiracles each with three minute bulbs on short stalk (Spencer, 1972b: 15). Hosts in Britain: Salicaceae       Salix     Spencer, 1972b: 15 Salix caprea Goat Willow Spencer, 1972b: 120 Hosts elsewhere: Salicaceae       Salix     Spencer, 1990: 93 Salix caprea Goat Willow Spencer, 1976: 39         Time of year - galls: April-May. Time of year - adults: end of May or early June. Distribution in Britain: Surrey (Box Hill, Effingham and Oxshott) and Cambridge. (Kirtling) (Spencer, 1972b: 15), South Somerset and Surrey (NBN Gateway distribution map - NE). Distribution elsewhere: Widespread in Europe and temperate Asia, with confirmed records from Spain, Finland, Germany, Austria, Hungary, the Kirghiz Republic of the [former] U.S.S.R. (Spencer, 1976: 39), French mainland, Italian mainland, Lithuania, Poland, Switzerland and The Netherlands (Martinez in Fauna Europaea). Parasitoids: Unknown. Adults: The adults, including the halteres, are uniformly black. Hexomyza simplicoides may be distinguished from the two other species of the genus recorded in Britain, sarothamni and simplicicoides, by the costa ending at or shortly beyond vein R4+5.

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Last updated 05-Aug-2008  Brian Pitkin