THE SYRPHIDAE OF OHIO 91 



8 Third segment with an opaque spot in front, broadly and conspicuously yel- 

 low on the sides, joining the yellow of the second segment; the black of the second 

 segment wholly opaque not extending outwards on the sides behind; fourth segment 

 metallic; eyes briefly contiguous in the male ineigenii(brousi Willst. ) 



Third segment not conspicuously yellow, the posterior opaque fascia of 

 second segment behind reaching toward the lateral margin, the side-spots inconspic- 

 ouous; third and fourth segments with a narrow anterior velvety fascia; eyes broadlj- 

 contiguous in the male; front of female narrow; deep bluish-black; scutellum but very 

 little lighter *Saxoriim Wied. (Pa., N. J., Mass., Conn., Ga., N. C.) 



9 Hind femora slender; frontal triangle and front below (female) with black pile, 

 arista 1)riefly pilose; opaque black of second segment extends nearly the whole width 

 of the front border transversus 



Hind femora dilated or thickened 10 



10 Front of triangle thickly white pilose, lower part of front in the female not 

 wholly so; third abdominal segment wholly opaque in the male; with a shining 

 cross-band, and the second segment broadly black in the middle in female. Dorsum 

 of thorax, besides the front border with two completelight cross-bands (female) or 

 only one along suture (male) *albifroiis Wied. (Car., Ga., Fla) 



Pile of lower part. of front or the frontal triangle wholly white or yellow; 

 third abdominal segment with a shining cross-band, second segment narrowly black 

 in the middle, dorsum of thorax with two complete light cross-bands, besides the 



front border ''•vinetoniDi Fab (Phila., Fla.) 



II vSecond segment of abdomen with yellow lateral triangles, and a posterior 

 interrupted or sub-interrupted velvety cross-band; posterior margin of segments 2-4 



yellowish white with a fringe of pale golden pile latifrons 



Second segment except the obsolete or metallic side spots, which extend the 

 whole length of the segment, velvety black; third usually with a velvety triangle in 

 front; the fourth with a similar but very small one; the yellowish white hind borders 

 fringed less conspicuously with light colored pile meigenii 



62 E. aeneus vScopoli. For description of larva, pupa and adult see 

 Part II. p. 61. Numerous .specimens, mid- April and late vSeptember. 

 Cohimbtis, Cincinnati. 



63 E. bastardiiMacquart. Seven males and three females, Columbus, 

 Sandusky, Castalia, Akron; late April to late Atigu.st. 



64 E. meigenii Wied. One male, one female, Akron and Castalia; late 

 June and mid-Julw Three males, Lakeville; mid-June. 



65 E. dimidiatus Wiedemann. A very abundant species the first of 

 A])ril about willow {Salix .sp.); 50 specimens, Lakeville, Columbus, 

 Sanduskv, Ira, Vinton, Georgesville ; late March to earl\- October. 

 (Fig. 252.) 



66 E. flavipes Walker. Seven males and three females, Columbus, 

 Sandu.sky, Milan; middle of May to late August. (Fig. 221. ) 



67 E. latifrons Loew. Taken b}- Dury at Cinciiuiati. Ai)ril 4 to 

 October 30. 



