62 . MISCELLANEOUS STUDIES 



64. Macrosiphum calif ornicum (Clarke) 



Figures 131, 132 



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

 Davidson, Jour. Econ. Ent., vol. 2, p. 304, 1909 (list). 

 Davidson, Jour. Econ. Ent., vol. 3, p. 380, 1910 (list). 

 Davidson, Pom. Jour. Ent., vol. 3, p. 398, 1911 (list). 

 Essig, Pom. Jour. Ent., vol. 3, p. 548, 1911. M. laevigatae, n.sp. (orig. 

 desc.). 



Eecords. Salix sp. ; Newcastle, Placer County (Clarke); Stanford University 

 and Penryn, Placer County (Davidson) ; Stanford University, November, 1914 

 (Morrison), May, 1915; Berkeley, April, 1915 (Shinji) ; August, 1915, Salix 

 laevigata; Santa Paula (Essig) ; Riverside, May, 1917. 



Clarke described the apterous females of a species of Nectarophora 

 (Macrosiphum) from specimens taken on willow in Placer County. 

 Because of the extremely long cornicles it is possible to identify this 

 with specimens taken since throughout the San Francisco Bay region 

 on various species of willows. Essig 's M. laevigatae from Santa 

 Paula is the same species, having been compared by the author with 

 specimens from Stanford University and Berkeley. Morrison has 

 taken the males and oviparous females of this species in the vicinity 

 of Stanford University in November, 1914. The author has reared 

 specimens of Aphidins polygonaphis Fitch, and Praon simulans Prov. 

 from this species taken in Berkeley. 



65. Macrosiphum chrysanthemi (Oest.) 



Oestlund, 14th Rep. Geol. Surv. Minn., vol. 22, 1886. Siphonophora (orig. 



desc.). 



Davidson, Jour. Econ. Ent., vol. 5, p. 411, 1912 (list). 



.Record. Undetermined species of Compositae; Courtland (Davidson). 



This is a doubtful species taken by Davidson at one time from an 

 undetermined composite near Courtland. The author is entirely 

 unacquainted with the species. 



66. Macrosiphum cucurbitae (Thos.) 



Figures 133, 134 



Thomas, 8th Ann. Rep. Illinois St. Ent., p. 66, 1879. Siphonophora (orig. 

 desc.). 



Becord. Cucur'bita sp., Hayward, Alameda County, July, 1915 (Roy E. Camp- 

 bell) ; Los Angeles, May, 1917. 



