Horváth Géza (szerk.): A Magyar Természettudományi Múzeum évkönyve 9. (Budapest 1911)
Brues, C. T.: New Diptera of the family Phoridae from Paraguay
PHORIDAE FROM PARAGUAY. 441 ments are entirely covered with bluisli-white, iridescent pollen, except for narrow opaque black posterior margins. It is therefore, probably only a well-defined color variety. Gymnophora MACQ. Up to the present writing this genus has remained monotvpical, represented by G. arcuata MEIG. first described as a member of the European fauna, 1 and the later recognized from the United States by O STEN S ACKEN in 1878 (Cat. Dipt. N. Amer. Smithsonian Misc. Coll., p. 212). It is therefore of considerable interest to know that the genus is represented in Paraguay by a second species of which there are two specimens in the small collection before me. As will appear from the following detailed description, the South American form is quite different from the European arcuata, but is without doubt congeneric as it presents all the generic peculiarities of the typical species except for slightly less reduced frontal bristles. In this connection, I have been led to compare closely Nort American specimens of arcuata with those from Europe to make sure of their identity. A single example from the Pacific Coast (Tacoma, Wash.) is not distinguishable from others collected in Germany, but all the specimens from the eastern United States which I have at hand, show slight but constant differences in the wings. They lack a slight, but very distinct swelling of the costa just before the tip of the first vein, which meets the costa nearer to the base of the wing than in European examples, where its tip is opposite the furcation of the third vein. Further material is necessary, however, to show that individuals from the eastern United States are really distinct from the European and Pacific Coast form. If such should prove the case, it will not be so surprising, since many paleearctic insects appear in Western North America and not in the Atlantic Region. Gymnophora colona n. sp. Female. Length 15—1 "8 mm. Black, shining on the head and thorax; legs yellowish brown, darker on the posterior pair; wings infuscated. Front shining, not punctate or pollinose, but sparsely hairy; occipital row of bristles with the lateral bristle quite well developed, but with the median pair shorter. Lateral bristle of next row below also 1 MEIGKN, Syst. Boschr. zweifl. Ins., VI, p. 2-2-2, 1830.
