alfalfa and idle fields, at present. The hatch of M. mexicanus , 
M, hivittatus (Say), Aeoloplus turnhullii Thos., and Aulocara elliotti 
Thos, is from 50 75 percent complete, Camnula. pellucida , 
M, differentialis (Thos.) and M. femur-ruhrum (Deg.) have just commenced 
hatching in these counties* _ Marginal hoppers are shifting into the 
fields as they hatch and slight damage is becoming ei'ldent in the heavier 
populated fields. Weather conditions the past week have been unfavorable 
to the hatching and activity of grasshoppers in the I’.ore northern portion 
of the State* (May 19-25)s No new jg, longipennis areas other than those 
shown in the fall survey have developed in the south^ern portion of the 
State; however, within known areas new beds are being found. Approxi- 
mately a 90 percent hatch has occurred in the area as a whole. Popula- 
tions on May 25 averaged from 5 OO per square yard in concentrated bands 
to 50 per square yard in more scattered, locations, 4'iverse weather 
conditions during the last 2 weeks have delayed hatching and nymphal 
development considerably, Pirst-instar nymphs are soattering and in many 
places cover 20 times the area of the original egg be&s. Weather con- 
ditions, together with bird predatorization, occurring as it did at the 
height of the hatching period, fcas resulted in population reductions 
of as much as SO percent on some egg beds* In Logan, northern Washington, 
and Morgan Counties, in northeastern Colorado, populations n?e generally 
low and not alarming eaccepting in several scattered ICcalitiesi, Heavy 
infestations are present In stubbled-in winter wheat and vdieat planted 
in disked stubble fields in the vicinity of Kelly, in i»ogan County* 
Populations there range from 50 per square yard in the fields to 250 
along the margins. Hatching of M, mexicanus , M, bivittatus , AeolQplus 
turnbullii , Aulocar a elliotti , and M, packardii is fronl 75 to 100 
percent complete, ]K. differential! and M. f ernur-rubrum are hatching* 
Grasshopper movement and feeding have been retarded by ’;.he adverse 
weather and little< crop damage has resulted* 
Arizona* (May 12-lS).'. Jn the lower Yuma Valley of Yuma County, grasshopper 
infestations are spotted and in the crop areas populations range from 
5 to io per square yard along field margins and grassy areas within 
alfalfa fields, mexicanus and M, djfferentialis are present, with 
about 90 percent of the M, mexicanus in the adult stage, vixereas 80 
percent of the M. differentialis are second and third instt\rs with the 
remainder in thjc first and fourth instars. Hatching is thgught to be 
almost complete in this area. In Maricopa County there art .numerous, 
scattered, local infestations with from 20 to ^ hoppers per square 
yard in most of the farm sections. Most of the M, mexicanu # here are 
in the adult stage, whereas with M, differentialis JO percent are in 
the second and third instars and the remainder are in the first and 
fourth. In the Sunset and Bonita areas of Graham and- Cochise Counties 
where infe|6tations have beon severe for the past 3 years, it appears 
that a lighter infestation iriay be expected this year, li. mexicanus 
is the dominant species, with 65 percent in the adxilt stage, (May 19*-‘25}j 
Infestations continued to be serious in Maricopa, Yuma, and parts of 
Graham and Cochise Counties, Several heavy infestations of M, diff er- 
entialife are beginning to appear in the West Chandler and South Glandale 
distri(jts of Maricopa County. Populations in these areas range from 50 
