160 



THE ENTOMOLOGIST. 



DESCRIPTIONS OF OAK-GALLS. 



Translated from Dr. G. L. Mayr's ' Die Mitteleuropaischen Eichengallen. 



By Edward A. Fitch. 



(Continued from p. 134.) 



Fig. 66. — Neueoterus lanuoinosus. 



66. Neuroterus lanuginosus, Gir. — This beautiful gall is 

 found on the under side of the leaves of Quercus cerris, both 

 on stubs and on old trees. This spangle gall is attached to 

 the leaf by means of a short pedicel, and is not visible on 

 the upper side of the leaf: it is spherical, with a diameter of 

 from 4 to 6 millimetres, depressed in its young state ; but 

 later on it becomes 3 to 4 millimetres in height, so that the 

 upper and under surfaces become more or less protuberant. 

 The whole surface of the beautiful red gall is thickly covered 

 with long, while, silky hairs, which, particularly in immature 

 galls, are arranged radiately on the upper side of the gall ; 

 and those hairs which emanate from the papilla at the top 

 are yellowish brown and very thickly arranged. It is of a 

 very tender, loose texture in the interior, and contains a 

 larva-cell. The gall falls in October, but does not attain 

 maturity till a month afterwards. Dr. Giraud obtained the 

 fly at the end of March. — G. L. Mayr. 



The inqiiilines and parasite, which Dr. Mayr has bred 

 from this Turkey oak and exotic gall, are Synergus variabilis^ 

 Mayr, Sapholytus Haimi, Mayr, and Callimome abdominalis. 



