APHILOTHEIX COLLARIS. 79 



Aphilothrix collaris, Haitig. 



Cynips collar is, Hartig, Sclieiick. ; C. teynientorum, Sclitdl. ; 

 C. fasciata, Sclitdl. ; Aijhilotkriv collaris, Mayr, Adler, Liclit., 

 Fitch; Andricus collaris, Mayr, Cameron, Mosley. 



English name of gall. — " The Collared Bud Gall." 



Position of gall. — In lateral and terminal leaf buds. 



Manner of growth. — Solitary, g-labrous, glossy, concealed. 



Colours. — (xreen, greenish-yellow, brown. 



Average dimensions of a mature specimen. — Height, 

 3 mm. ; breadth, 2 mm. ; girth, 6 mm. 



May be sought during the months of August and September. 



Growth is complete by the end of September. 



The typical condition of the gall is imilocvdar and unilarval. 



The larva pupates in the gall. The imago emerges during the 

 spring of the second vear. 



Parasites, Nos. 117, 50. Inquilines, Nos. 133, 135. 



Alternate sexual generation : Andricus curvator, Hartig. 



The quickest way to discover tliis deeply -hidden 

 gall is to longitudinally slice, Avith a sharp knife, every 

 bud on twigs of a likely bush until the typical appear- 

 ance of a galled bud is remembered ; then by removing 

 a few leaf scales only of other buds undamaged speci- 

 mens can be secured. 



A most obscure gall by reason of its diminutive size 

 and in being almost entirely concealed by the leaf 

 scales until quite mature ; then only a small portion of 

 the apex is visible, which usually being brownish in 

 colour harmonises with the leaf scales and renders 

 detection very difficult. 



" It is hard, woody, conical or oval, sometimes almost 

 round and smooth, the apex narrowed to a point, form- 

 ing a blunt cone surrounded by a zone differently 

 coloured from the rest of the gall " (' Brit. Phyto. 

 Hymen.,' vol. iv, p. 90). 



From the case of each gall is formed a slender 

 appendage which penetrates deeply into the axis of 

 the bud. AYhen the gall is mature this appendage 

 contracts and the s'all falls to the g-round, but other 

 specimens which contain parasites or inquilines remain 



