EXPERIMENT STATION BULLETINS. 



271 



broad. It is almost destitute of hairs except at the cephalic end and on 

 the sides. A moderate number of microscopic hairs are scattered over 

 the body. Spinnerets are scattered over the back, being numerous at 

 the caudal end. The legs are slender. The tibiae are two and one-half 

 times (or slightly more) as long as the tarsi. The ano-genital ring is 

 large, tuberculate, and bears six short hairs. The antenna is long and 

 slender, being nine-jointed and bearing a few hairs. Joints eight and 

 nine are closely united, sometimes appearing almost as one joint. 

 Joint nine is longest; then come two and three, nearly as long; then 



Fig. 30.— Antenna and ano-genital ring of female of the maple cottony false mealy-bug, enlarged 



Original. 



one and four, then five, six, seven and eight. The relative lengths of 

 the joints are somewhat variable, but the one given is fairly typical of 

 the specimens collected. 



The adult male has antennae with ten joints, a very short style, and 

 four white anal filaments. Fig. 21. The middle two are long and the 

 two outer ones shorter. The color is reddish-yellow to maroon. The 

 wings are white. 



Pig. 21.— Anal filaments of male of maple cottony false mealy-bug, enlarged, Original. 



The winter is passed in an immature condition in cracks in the bark 

 and, at that time, they may be killed by means of the oily sprays. 



Aphicus sp. and Baccha fascipennis* were bred from the egg masses. 



As pointed out by Mr. Kingf and before him by Dr. Howard| the 

 American species differs from that described by Signoret in several par- 

 ticulars. Mr. King's specimens differed from those of the writer in the 

 relative lengths of the antennal joints, but otherwise they appeared to 

 be the same. Signoret describes the female as oval, with the upper part 

 of the back covered with hairs in the form of a punctulatiou, more or 

 less dense, and with hairs very long, chiefly upon the median part of each 

 segment, and at the extremity of the abdomen. The antennae are de- 



* Kindlv determined bv Dr. L. O. Howard and Mr. Wm. Coquillet of the Department of Agriculture. 



t Can. Ent. Vol. 31, p 112. 



t Insect Life, Vol. vii, pp. 235-240. 



