96 MISCELLANEOUS STUDIES 



113. Aphis calendulicola Monell 



Monell, U. S. Geol. Geog. Surv., Bull. 5, p. 23, 1879 (orig. desc.). 

 Clarke, Can. Ent., vol. 35, p. 250, 1903 (list). 



Eecord. Calendula officinale; Berkeley (Clarke). 



This species has not been recognized since Clarke 's report of it on 

 marigold. It is possible that he had Aphis senecio Swain, which is 

 very common on marigolds throughout the state. 



134. Aphis cardui Linn. 



Figures 208, 209 



Linnaeus, Syst. Nat., vol. 2, p. 735, 1735 (orig. desc.). 



Games, Mon. Bull. Gal. Comm. Hort., vol. 1, p. 399, 1912. Aphis pruni 



(list). 



Davidson, Jour. Econ. Ent., vol. 5, p. 407, 1912 (list). 

 Patch, Maine Agr. Exp. Sta., Bull. 233, p. 263, 1914 (desc.). 



Records. Cirsium sp. ; San Jose (Davidson); Berkeley, June, 1915: Prunu-s 

 domestica; Orangevale, Sacramento County (Carnes) ; Walnut Creek (Davidson) ; 

 Berkeley, March, 1916 (Essig). 



According to Patch this thistle aphid is the same as the one infest- 

 ing plums and formerly known as A. pruni Koch. Both are abundant 

 in the San Francisco Bay region, pruni being found in the fall and 

 spring on plum, cardui during the summer on thistle. The author 

 has attempted no transfer tests, so accepts Patch's statement as 

 authority for the synonymy. It is certain that structurally these are 

 strictty identical. 



115. Aphis cari Essig 



Essig, Univ. Calif. Publ. Entom., vol. 1, pp. 317-321, 1917 (orig. desc.). 



Eecord. Carum kelloggii; Eutherford, Napa County (Essig) ; Angelica 

 tomentosa; Berkeley (Essig). 



Essig recently described this from specimens taken on wild anise 

 in Rutherford. The author has seen cotype specimens, but has never 

 collected the species. 



116. Aphis ceanothi Clarke 



Figures 210, 211 



Clarke, Can. Ent., vol. 35, p. 250, 1903 (orig. desc.). 

 Davidson, Jour. Econ. Ent., vol. 2, p. 302, 1909 (list). 

 Davidson, Jour. Econ. Ent., vol. 3, p. 377, 1910 (list). 

 Essig, Pom. Jour. Ent., vol. 3, p. 525, 1911. Aphis ceanothi-hirsuti n. sp. 

 (dese.). 



