A SYNOPSIS OF THE APHIDIDAE 61 



61. Macrosiphum artemisiae (Fonsc.) 



Figures 142, 145 



Boyer de Fonscolmbe, Ann. Ent. Soe. France, vol. 10, p. 162, 1841. Aphis 



(orig. desc.). 

 Essig, Pom. Jour. Ent., vol. 3, p. 546, 1911. Macrosiphum frigidae (Oest.) 



(desc.). 

 Davidson, Jour. Econ. Ent., vol. 3, p. 133, 1914. Macrosiphum frigidae 



(Oest.) (list). 

 Wilson, Trans. Amer, Ent. Soc., vol. 41, p. 97, 1915 (desc.). 



Records. Artemisia calif ornica ; Santa Paula (Essig) ; Walnut Creek, Contra 

 Costa County (Davidson). 



Occasionally this species is found infesting the tender shoots of 

 the common California sage brush. It is characterized by the presence 

 of capitate hairs scattered sparsely over the body, particularly of the 

 apterous female. The synonomy above is after Wilson, who lists 

 M. frigidae (Oestlund) as a synonym of artemisiae (Fonsc.). 



62. Macrosiphum artemisicola (Williams) 



Figures 146, 147 



Williams, Univ. Neb. Studies, vol. 10, p. 73, 1910. Siphonophora (orig. 



desc.). 

 Wilson, Trans. Am. Ent. Soe., vol. 41, p. 96, 1915 (desc.). 



Records. Artemisia tridentata, A. vulgaris; Oregon (California) (Wilson). 



Although there is no published record of the presence of this 

 species in California it is included here on Wilson's authority. He 

 stated to the author that he had found it in California, although he 

 failed to give any date or locality record. This is characterized by 

 the fan-shaped setae which thickly cover the body of the apterae, and 

 which are present on the ventral side of the abdomen of the alates. 

 The author has specimens taken by R. W. Haegele in the summer of 

 1915 on Artemisia sp. near Canton, Montana. 



63. Macrosiphum baccharadis (Clarke) 



Clarke, Can. Ent., vol. 35, p. 254, 1903. Nectarophora (orig. desc.). 

 Record. Baccharis sp., Berkeley (Clarke). 



This species is one of those described by Clarke, but since then 

 unknown. It is possible that it is M. rudbeckiae (Fitch), which is so 

 common on Baccharis throughout California. 



