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University of California PuhUcations [Entomology 



black Cauda and black or dusky antennal markings. It very 

 much resembles the corresponding form of the preceding species 

 in size, color and shape, but lacks the black tubercles on the 

 dorsum and has the sensoria on article III of the antennae 

 grouped about one-third the distance from the base instead of 

 being confined to the basal third (fig. 2, D). The number of 

 sensoria is also smaller as will be seen from the following tabu- 

 lation of thirty-one individuals 6, 6:7, 7:5, 5:6, 8:4. 5:4, 4:5, 



Fig. 2. MyzocaUis arundicolens (Clarke). Winged viviparous female. 

 A, adult; B, cornicle; C, cauda, and anal plate; D and E, antenna; F, 

 article III of the antenna of a sexupara. 



6 : 5, 6 : 5, 6 : 6. 6 : 5, 5 : 6, 6 : 5, 6 : 6. 6 : 7. 8 : 5, 6 : 5, 6 : 6, 7 : 5. 6 : 6, 

 6 : 4, 6 : 6, 6 : 6, 6 : 5, 6 : 5, 6 : 6, 6 : 5, 6 : 5, 6 : 5, 6 : 6, 8 : 6, 7. The 

 stigma of the wings usually lack the darker spots at the base 

 which is so constant in MyzocaUis arundinariae, and the cauda 

 is usuallv blacker. 



SEXUPAEA 

 Fig. 2, F 

 The sexupara is very much like the virgogenia, but is usually 

 a little larger. There are also more sensoria on article III of the 

 antennae (fig. 2, F) as shown by the following tabulation of 

 eighteen individuals : 7, 8 : 10, 10 : 7, 7 : 8. 9 : 6, 9 : 8, 9 : 6, 10 : 7, 

 8 : 8, 9 : 7, 9 : 8, 9 : 8, 9 : 9, 10 : 8, 9 : 8, 8 : 7, 10. 



