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- W937555144 abstract "In Europe, one can find two generally similar galls on many species of spurge, a bud gall made up of many tightly folded leaves and an inflorescence gall. The bud galls act as an energy sink and always result in the death of the affected plant apex. The inflorescence galls prevent the development of seeds. Recent museum and field studies show that although both gall types occur on most spurges, each kind of gall on any particular spurge species is formed by a different gall midge. The flower galls are made by Dasineura capsulae Kieffer and relatives. This complex of species, evidently restricted to spurges and kept for the present in Dasineura, is distinct from other species in that genus in having a bilaterally flattened ovipositor. A revision of these gall midges is in progress. The bud galls, however, are caused by at least two and possibly three different genera of gall midges. They are the subject of a paper that I have submitted to the Annals of the Entomological Society of America. One genus, which will be described as the new genus Spurgia, is known from two species. Spurgia esulae, a new species, forms the bud gall on Euphorbia esula L. in Italy. The other, S. capitigena (Bremi) forms the bud gall on Euphorbia cyparissias L. in France, Switzerland, Italy, and Yugoslavia. The latter was once placed in the genus Bayeria, but only on the basis of superficial resemblances to that genus. Spurgia and Bayeria are not closely related. The bud gall on Euphorbia palustris L. in Germany and Sweden is formed by a true Dasineura, D. schulzei Rubsaamen, and that on Euphorbia characias L. in Sicily by Janetiella euphorbiae De Stefani Perez. The type specimens of this last species are lost, so specimens must" @default.
- W937555144 created "2016-06-24" @default.
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- W937555144 date "1989-01-01" @default.
- W937555144 modified "2023-09-26" @default.
- W937555144 title "The gall midge complexes (Diptera: cecidomyiidae) on spurges (Euphorbia spp.) in Europe" @default.
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