172 ENTOMOLOGICAL NEWS [June, '22 



curled and lie so close to the body as to be easily overlooked. The short 

 antennae are inconspicuous, about .15 mm. long, seven-segmented and 

 straw-yellow in color. The legs are very short and straw-colored. 

 Although the adults are sluggish the young are active and move 

 from one part of the plant to another. At birth the young are .4 mm. 

 long, a bright pale yellow, flat rather than plump and cylindrical, have 

 six-segmented antennae and legs which in proportion to the body are 

 much more conspicuous than the legs of the adult. 



Adult specimens were placed on the roots of small clover 

 plants which had been transplanted into straight-edged vials. 

 A single specimen was placed in each vial and the vial wrapped 

 with black paper. Water was introduced from one to three 

 times daily as the needs of the plant required. Eight adults 

 brought from a clover field on February 14 began giving birth 

 to young one month later, March 12 to 15. The total number 

 of young produced was recorded daily for two individuals, 

 one produced 131 larvae in 23 days and the other 162 larvae in 

 17 days. The other six adults gave birth to young over a 

 period averaging 17.8 days and all died within three or four 

 days after the last young appeared. 



Within a short time, a few hours to a day, after birth the 

 young left the flimsy cottony mass beneath the body of the 

 mother and migrated to the stems and leaves where feeding 

 began. About one week (20 individuals averaged 7.7 days) 

 later the first molt occurred and within another week (28 indi- 

 viduals averaged 6.8 days) the second molt occurred, after 

 which most of the larvae migrated down to the upper roots, 

 on the crown and beneath the bracts around the base of the 

 stems. Because of this migration it was with difficulty that 

 only four individuals were followed through the third larval 

 stage which averaged 12.2 days. These were kept under obser- 

 vation for five weeks after the third molt, when the writer left 

 Columbus. During this time they had assumed the appearance 

 of adults except for reduced size, being only 1.7 mm. long. 

 Overwintering adults were from 2 mm. to 2.5 mm. in length 

 and before young were produced in the spring the average 

 length was increased to 3 mm. No males were observed. 



In October adults, but no young, were common on the roots 

 of clover two years old or older. They were always asso- 



