INSECTS AFKi;CTIXC. I'AKK AND WOODLAND TREKS 647 



Birch seed gall midge. Olioolropliits hctiilac W'inncrtz. Deformed cat- 

 kins of white birch procUicc cnlarjj^cd seeds, each containing a redcHsli, legless 

 maggot. 



This Muroiiean species is rather common about All^any and is of 

 interest because of the peculiar deformity it produces in birch seeds. The 

 larvae become full grown early in ()ctol)er, at whicli time a windowlike 

 spot is easily discerned on the surface of the seed. The normal alate or 

 winged seed is transformeil by this insect into a nearly gloljular form with 

 the alae ruilimentary. 



Sumic tomato gall. Pemphigus r/iois )• ilch. .Somewhat pear-sliaped or 

 roimd, retidish galls of dittercnt sizes occur on sumac leaves in .September. 



rhese galls are rare in the vicinity of Albany. They are quite varialjle, 

 round, spheroid in form, with the surface uneven ami usually slightly 

 knobby. The face e.xposed to the sun is normally ijright crimson ami the 

 interior is sonn-times thickly crowded with plant lice. These galls occur on 

 R h u s g 1 a Ij ra and R. t y \) h i n a. \Scc pi. 49, tig. 3. | 



Hackberry nipple gall. I'acJiypsylla ccllidis-Diamnia Riley. This gall 

 is represented l)v a cui)-shapcd depression on the upper sitle of the leaf; 

 beneath it is broadly rounded and about ]j^ inch in diameter. It is common 

 on hackberry. 



Rose root gall. RItoditcs radicitm Osten Sacken. This large, smooth, 

 reddish brown gall occurs on the roots of various wild roses. It is cU'e]jly 

 incised at the point of attachment to the roots. The interior is |)ithy 

 and contains ninnerous cells. 



Rose bedegar. RJiodites 7-osac Linn. Curious, curved, fibrous, moss- 

 like masses occur on rose and blackberry Inishes. This peculiar gall is 

 composed of a mass of hard cells formed around a branch and is entirely 

 covered with long, dense, green filaments forming a mosslike mass xyi 

 inches or more in tliameter. 



Mealy rose gall. Rlioditcs ignota Osten Sacken. Irregular, spheric 

 galls about tlu! size of a pea, covered with a white mealy substance, are 

 rath(!r common on wild rose in the vicinity of Albany. Occasionally several 

 of these galls coalesce, forming an elongated, irregular mass. Th-: gall is 

 a woody one and contains several cells. 



Spiny bullet gall. Rhodilcs bicolor Harr. Round galls a third to 

 nearly half an inch in diameter, covered .with prickly spines about as long as 

 the diameter of the galls, are common on twigs of different kinds of wild 

 roses. This gall is yellowish green sometimes tinged with red and occurs 

 in clusters of two or more. ' 



Globular rose gall. Rlioditcs globulus Beut. A smooth, rounded gall 

 arising aljruptly at each end from the branch, occurs on wild rose on .Staten 

 Island. It has a rather soft corky te.xture and contains numerous cell.s. It 



