246 Wisconsin Academy of Sciences, Arts, and Letters . 
Teuchocnemis Osten Sacken 
114. T. lit ur at us Loew. Milwaukee and Dane Counties. May. 
Scarce. 
Syritta St. Fargeau and Serville 
115. S. pipiens Linn. Cosmopolitan, early spring to late fall. 
Figure 81. 
Xylota Meigen 
1. Legs wholly black; hind femora much thickened. 
Legs not wholly black . 
2. Abdomen chiefly red; the second segment with a basal black 
triangle; wings nearly hyaline. pigra 
Wholly black; wings black. chalybea 
3. Front and middle legs and a large part of hind femora yellow; 
large species. curvipes 
Front legs in large part black. 
4. Abdomen long, slender, with two yellow spots on second seg¬ 
ment in male, absent in female. angustiventris 
Abdomen not unusually slender. 
5. Abdomen with two pairs of yellowish spots. 
Abdomen wholly black . 
6. Arista wholly black... obscura 
Arista luteous at the base. anthreas 
7. Hind femora much thickened; smaller species. fraudulosa 
Hind femora moderately thickened. 
8. Spots on second and third segments of the abdomen distinctly 
separated by a broad black line. ejuncida 
Line separating the abdominal spots nearly obsolete. subfasciata 
2 
3 
4 
5 
7 
6 
8 
116. X. angustiventris Loew. Milwaukee and Dane Counties. 
May to late summer. Figure 82. Common in woods. 
117. X. anthreas Walker. One female from Douglas County. 
118. X. chalybea Wied. Milwaukee and Dane Counties. 
119. X. curvipes Loew. One male from Vilas County. 
120. X. ejuncida Say. Numerous specimens from Manitowoc, 
Vilas, Milwaukee, Marathon, Douglas, Burnett, Polk, 
Door, St. Croix, Washington, Waushara, and Dane Coun¬ 
ties. Late summer. 
121. X. fraudulosa Loew. St. Croix, Pierce, Dane, Milwaukee, 
Washington, and Douglas Counties. 
122. X. obscura Loew. One specimen, Sheboygan County. 
123. X. pigra Fabr. One female, July, 1912, from Vilas County. 
124. X. subfasciata Loew. One male, August 2, 1918, from Dane 
County. Figure 83. 
