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or less to alfalfa fields and rangeland* M, differentialis is the 
dominant species in Maricopa County at present. Most of the M, mexicanue 
are in the adult stage, and females are gravid, (June l6-22); 
In orchards on some of the small ranches in Cochise County, adults of 
the large green hrush grasshopper, Schistocerca sho shone Thos., have 
appeared in fruit trees in large numbers, This grasshopper is doing 
considerable damage to the fruit and foliage* 
New Mexico, (June 2-8): Dissosteira longipennis Thos, adults were first 
reported in ‘the vicinity of Artesia, in Eddy Countyj about June 7« 
(Jxane l6»22): M. bivittatus Say and M, differentialis comprise about 
95 percent of all species present in San Miguel County; M, f emur-rubrum 
and M, mexicanus comprise the remaining 5 percent* In Sandoval, San 
Miguel, Colfax, and Valencia Counties, M* differentialis and M, bivittatu 
are the dominant species. About 10 percent are adults; nearly all of 
the M, mexicanus and M, f emur-rubrum are now adults* Damage has been 
rather severe in some alfalfa fields, and migrations into adjoining 
small-grain fields have taken place. About 50 percent of the D, longi - 
pennis in Eddy and Qpay Counties are now In the adult stage* Popula- 
tions are very light in this part of the State. 
Colorado, (June 2-8): The known infestations of D. longipennis in Pueblo, 
Otero, Cheyenne, and Las Animas Counties had been almost 100-percent 
cleaned by the close of the week. Natural control has been an important 
factor in reducing populations in these counties, the chief contributing 
agencies being the adverse weather conditions during the hatch and the 
activity of birds, Th^ only remaining heavy D. longipennis infestation 
in Colorado is an area of about eight sections in Lincoln County. In 
• the crop-hCpper , areas of northeastern Colorado, cool and stormy weather 
prevailed during the week, . retarding development and movement, and pre- 
venting crop damage to any great extent. Infestations in Adams, Weld, 
and Larimer Counties were reported as still confined largely to irrigated 
alfalfa -fierl-ds, ’ with mexicanus still the dominant species in this 
• area, representing about 40 percent of the populations* The hatch in 
northeastern Colorado was 'practically convicted except for differ - 
entialis and M, f emur-rubrum ; adult M* confusus Scudd* and M, occidentali f 
Thos, were reported in Weld County during the week, A heavy infestation 
is present in most of the southeastern part of Baca County, where 25 
percent of M, mexicanus are in the adult stage, D, longipennis in Baca 
County have now reached the sixth instar, with the greater number in 
the fourth and fifth. Approximately 50 percent of M, mexicanus in Baca 
County have become adul't, A minor flight of these hoppers, was observed 
On Ju^e 14, covering an area of approximately 50 square miles, and most 
of the hoppers were flying higher than 1,000 feet above the ground* In 
Lincoln and Kit Carson Counties, some of the M, mexicanus have become 
adult; however, most are in the fifth instar. M, bivittatus and M,, 
packardii Scudd, are next in dominance, with M, packardii matured, 
. Mature M, occidentalis were reported in Park County at about 40 per square 
yard, Nymphal migrations are occurring daily back and forth in abandoned 
and' idle land, some migrating into crops, (June l6 to 22): A new 
