88 



STRAT10MYID.E 



TaUe of Species. 

 1 (8) Cubital vein simple (fig. 108). 



If.Jj. — This character is very important, though it often requires very 

 close examination to avoid being overlooked, as the outer 

 margin of the stigma may be misleading. 



FlG.lOS.—Oxyceraformosa 9- x IS. 



2 (3) Abdomen yellow at the tip only. AVings with a conspicuous 

 darkening about the middle. 1 analis. 



o (2) Abdomen with side spots as well as the tip yellow. Wings without 

 any darkening about the middle. 



4 (7) Thorax moderately shining. Scutellum and legs more or less 



black. 



5 (6) Legs with more than the knees pale. Scutellum often mainly 



pale. Small, weak species. 2 pygmoea. 



6 (5) Legs with only the knees pale. Scutellum black. Smallish, 



sturdy species. 3 nigripes. 



7 (4) Thorax brilliantly shining. Scutellum and legs conspicuously 



yellow. 4forinosa. 



8 (1) Cubital vein forked (fig. 109). 



J^.B. — Compare note under 1 (8). 



Fig. 109. — Oxycera pulchella S- x lOi. 



9 (10) Antennte elongate, and without any terminal arista (fig. 110). 

 Small species. 5 tenuicornis. 



Fig. 110. — Oxycera tenuicornis 9 . x 32. 



