AFRICAN APHIDIDAE. 337 



Food-plants : Apple, Pear and Quince ; and Elm in North America. 



Lounsbnry records Exochomus auritus as feeding on this aphis in South Africa. 



Common and at one time very destructive at the Cape, especially in the 

 Eastern Section ; it is also very destructive in Natal. It has been apparently 

 introduced into British East Africa where its multiplication has been extremely 

 rapid." Dewar says " probably present in all districts of the Orange River 

 Colony."f 



Miss E. Patch has recently shown that in America the Woolly Aphis migrates 

 between the elm and apple, etc. (Bull. 217, Maine Agric. Exp. Sta., Oct. 1913). 

 In England this does not appear to be the case. 



Rectinasus buxtoni, Theobald. 



Theobald, The Entomologist, xlvii, p. 29, Jan. 1914. 



East Algeria : Lambese, Batna, 5. iv. 13 {Buxton and Gurney). 



Found in the nests of Bothryomyrmex meridionalis and Pheidole pallidula, and 

 also in White Ants' nests (Leucotermes lucifugus, Rossi). Evidently a true 

 myrmecophilous species. 



Forda rotunda, Theobald. 



Theobald, The Entomologist, xlvii, p. 30, Jan. 1914. 



E. Algerta : Hammara, Meskontine, 3. iv. 13 {Buxton). 



Found in ants' nests (Tapinoma erraticum). 



Phylloxera corticalis, Kaltenbach. 



Kaltenbach, Die Pflanzen-Feinde der Insecten, p. 677 (1874); Theobald, 

 Second Report Eco. Zool. B.M (N.H.) p. 122 (1902) ; Lounsbnry, Cape Agric. 

 Journ., Dec. 1903. 



Cape Colony : King Williams Town and George ; Transvaal. — Europe. 



Food-plants : Quercus robur and the South African Oak ( Q. pedunculata). 



This Aphis was sent to me by Mr. Lounsbnry in 1902. It then appeared to 

 be new to South Africa, where it was found infesting the bark of oaks in count- 

 less numbers. It was thought that it had probably been introduced. 



Phylloxera vastatrix, Planchon (Vine Louse). 



Apliis vitis uinifrrae, Scopoli. 

 Pemphigus vitifolii, Fitch. 

 Peritymbia vitisana, Westwood. 

 Dactylosphaera vitifolii, Shimer. 

 Scopoli, Ent. Cam. p. 389 (1763) ; Fabricius, Ent. Syst. iv, p. 220 (1794) ; 

 Westwood, Gard. Chron. p. 687 (1869) ; Planchon, Ann. Agrom. i, p. 74 (187.5) : 

 Fitch, First and Sec. Repts. Nox. Ins. N. York, p. 158 (1886). 



This well known vine pest has done considerable damage to the vineyards in 

 South Africa. 



* Ann. Rept. Dept. Agric. B. E. Africa, p. 90 (1900). 

 f Farmers Bulletin no. viii, pp. 8-10 (1905). 



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