NEUROTERUS FUMIPENNIS. 117 
Neuroterus fumipennis, Hartig. 
(Plates XLVI and LX, div. A.) 
Neuroterus fumipennis, Tasch., Mayr, Thoms., Adler, Licht., 
Fitch, Miller, Cameron, Marshall; Spathegaster tricolor, Schenck, 
Hartig, Mayr, Adler, Licht.; S. varius, Schenck. 
English name of gall.—‘ The Cupped Spangle Gall.” 
Position of gall.—On the under-surface of the leaf. 
oe of growth.—Gregarious, numerous, cupulate, stellately 
pilose. 
Colours.—Green, greenish-yellow, covered by pink, rose-madder, 
and red hairlets. 
Average dimensions of a mature specimen. — Height, 
1:5 mm.; diameter, 3mm. ; 
May be sought during the months of July to September. 
Growth is complete by the end of August. 
The typical condition of the gall is unilocular and unilarval. 
Pr larva pupates in the gall. The imago emerges during 
ay. : : 
Parasite, No. 182. Inquiline, No. 142. 
Alternate sexual generation: Spathegaster tricolor, Hartig. 
When this gall occurs in great profusion on a leat 
the appearance is very beautiful. The prevailing 
colour is rose-madder, varying from a pale shade to a 
very deep tint. It is wholly due to numerous micro- 
scopic stellate hairlets, which, under magnification give 
off an aureate sheen. As the leaf and the galls dry 
the colour diminishes in brilliancy. 
Concerning the profusion of this gall: One leaf 
measuring (without petiole) 153 mm. long and 68 mm. 
from tip to tip of widest lobes, supported 489 galls, 
and so crowded were they that 18 galls were within 
one square cm. A part of the leaf is shown on Plate 
LX, div. A. - 
It is sometimes difficult to distinguish most immature 
and some mature specimens of this gall from those of 
N. lenticularis. They resemble each other very closely 
by reason of a profusion of very small reddish glossy 
hairlets scattered upon the upper and under-surfaces. 
