ART. 9 FLIES OF THE GENUS STYLOGASTER ALDEICH H 



spot; no humeral bristle, one notopleural, one supraalar. Sciitellum 

 with a small brown spot covering about two-thircls of the disk; 

 metanotiim with a small blackish spot, narrower than first abdominal 

 segment. 



Abdomen almost entirely yellow ; first segment faintly brown above, 

 and second to fourth segments with a faint brown posterior cross- 

 band, not reaching the sides; first segment with only pale bristles 

 laterally, arising from whitish ground color. Genitalia yellow, 

 a striking row of pale hairs along the lower edge of the fifth tergite. 

 Hairs of the abdomen quite dense and uniform, brown in color. 

 Lateral bristles of second segment black, in a single row anteriorly. 

 Most of the specimens of both sexes show two small brown spots on 

 the second abdominal segment near its base. 



Legs yellow, front and middle ones rather whitish. Front coxae 

 with only pale hairs at tip ; middle with mixed pale and dark. Hind 

 femora and tibiae with the usual villosity on the inner side; hind 

 femora yellow with two faint brown rings; hind tibiae yellow at 

 base, whitish toward middle, the apical two-fifths decidedly black, 

 the whitish part covered with white hairs behind. Hind tarsi brown. 



Wing nearly hyaline, the first posterior cell wide beyond the 

 middle on account of the broad curve of the last section of the fourth 

 vein, wider than submarginal. Hind crossvein parallel with wing 

 margin. Tip of second vein farther from base than anterior end 

 of hind crossvein. 



Female. — Ovipositor yellow on the two basal joints, the apical one 

 black except at extreme tip, the ovipositor as a whole decidedly 

 shorter than the remainder of the abdomen. 



Length, male 6.4 mm. ; female 6 mm., to ovipositor, which is about 

 3 mm. 



Redescribed from 6 males and 14 females: One pair from the 

 Riley collection has no locality; 1 male, Delaware (Ridings), also 

 from Riley collection; 1 male from Texas, but collector unknown, 

 received from Dr. O. Krober; 1 female, Victoria, Tex., collected by 

 E. A. Schwarz; 4 males and 8 females. College Station, Tex., col- 

 lected by H. J. Reinhard ; 1 female, Turkey Run, Ind., collected by 

 J. M. Aldrich ; 2 females, Chichenitza, Yucatan, Mexico, from Amer- 

 ican Museum of Natural History, differ in having largely black 

 bristles on sides of first abdominal segment. 



STYLOGASTER NEGLECTA Williston 



Stylogastcr neglccta Wilxiston, Trans. Conn. Acad., vol. 6, 1883, p. 91, 

 pi. 61, fig. 8. — TowNSE>D, Trans. Anier. Eut. Soc, vol. 22, 1894, p. G4. — 

 Johnson, Cat. Ins. N. J., 1899, p. 6G.5 ; 1909 (1910). p. 772; List Dipt. 

 New England, 1925, p. 180.— Snow, Kans. Univ. Sci. Bull., vol. 2, 1903, 

 p. 216. — Jones, Canad. Ent., vol. 39, 1907, p. 251. — Williston, Manual 



