1911] Hypera and Phytonomus in America 463 



Journ. Economic Entomology, Dec. 1910, which gives technical 

 information not in the bulletin mentioned. The earliest 

 record obtainable of its presence in Utah is its occurrence in the 

 spring of 1904 when it was present on a farm on the east side of 

 Salt Lake City. During the years 1905 and 1906 it spread for 

 several miles. I first saw the beetle and larva; at work early in 

 July 1907 when I went to Utah as Entomologist; it had not then 

 been reported from America. During the next two years it 

 spread rapidly, reaching a number of outlying districts and 

 probably passed over the first range of the Wasatch Mount- 

 ains into the Weber valley. During 1909 the greatest exten- 

 sion was to the south and southwest. The weevil reached 

 that year a watershed boundary along these lines. On the 

 south at Olivers there is a gap in this boundary through which 

 the Jordan river flows. In Summit county it passed both up 

 and down the stream a number of miles this year. The bound- 

 ary lines between Davis and Morgan and between Salt Lake 

 and Summit counties are on the summit of the first range of 

 mountains as may be seen by examining the course of the 

 streams. It will be noticed that this range did not hinder the 

 spread of the insect. The same year it passed to the north by 

 the narrow gap of uncultivated land near the lake border north of 

 Salt Lake City and reached a very fertile and prosperous alfalfa 

 region, that of Davis county. During 1910 the distribution 

 was extensive, especially to the southward into Utah County 

 for a number of miles over a country well supplied with food for 

 the insect. At Provo on the south the mountains again come 

 very close to the lake shore but the insect during the summer of 

 1910 passed this barrier and reached the south side of the lake, 

 being found as far as Payson (Titus, 1910, Ainslie & Titus, 1911). 

 There is no other barrier to hinder its passage for miles. It has 

 passed the barrier of the short canon between Provo and Thistle 

 and will be able to go easily into the valley southward, the 

 Sanpete and Sevier region growing ' many acres of alfalfa. 

 In August, 1911, Dr. E. D. Ball took a weevil at Soldier Summit, 

 the highest point in Utah on the Rio Grande railroad. In 

 August, 1911, Mr. V. A. Sadler of the Utah Exp. Sta., took 

 weevils above the Dawson Ranch on Bear Creek, east of Heber. 

 To the north all of Davis and Weber counties have been covered 

 and a few have been found at Collinston, Corinne and Honey- 

 ville, Box Elder county. There are many acres of alfalfa 



