APHILOTHKIX AUTUMNALIS. /O 



the gall also appear. These are deeper, and also 

 broader in some specimens than in others. 



The base is almost always snrrounded by bud scales. 

 In some examples these are absent or indistinct. An 

 occasional example will be attached to the twig by a 

 stout peduncle. Under a pocket lens a number of 

 very small purple, glossy papilla3 are seen in a few 

 specimens. The apex is generally surmounted with 

 a distinct projection, mostly simple, sometimes 

 recurved. 



The gall develops as early as April, but normally in 

 May, from the buds of the previous year's twigs. As 

 soon as maturity is past the gall falls off. 



Of the many hundreds I have found of these galls 

 the largest measures 12 mm. high and 18 mm. at 

 greatest girth. 



Cameron apparently considers this the same as 

 Aphilotlirix giuulrilineata, and all its characteristics 

 certainly favour the idea. 



It appears to have been first recorded as British by 

 E. A. Fitch, from Essex in 1874. 



It is common and widely distributed ; more easily 

 obtainal)le on stub-oaks and small bushes than on 

 large trees. 



Adler says: " Apliilotlirix (ilhopundafa produces the 

 same o-all as that from which it emerges. " 



Aphilothrix autumnalis, Hartig. 

 (Plate XXIII, div. B.) 



Cynijjs auhimnaJis, Hartig; Anclricns aiiii(nrnalis, Mayr ; AphUo- 

 tJirix auttimnalis, Liclit., Mavr, Fitch, Cameron, Adler. 



English name of gall. — " The Aiitumn Gall." 



Position of gall. — In lateral, axillary, and terminal buds. 



Manner of growth. — Sessile, glabrous, solitary, prolate. 



Colours. — Green, brown. 



Average dimensions of a mature specimen. — Height, 

 5 mm. ; breadth, 4 mm. ; girth, 12 mm. 



May be sought during the months of September and October. 



Growth is complete by the middle of October. 



