-413- 
In the middle of May Diatraea sp. appeared on sugarcane in the vicinity 
of Montemorelos, Nuevo Leon, and was also reported from Linares, This 
insect also attacked sugarcane in June in Ixtlan del Rio. In the month of 
June Diatraea sp. appeared in the greater part of the Camargo region of 
Chihuahua in the plantations of corn. It is calculated that 10 per cent 
of the crop is injured, 
Chilo sp. started attacking sugarcane in June in Ixtlan del Rio, in 
Nayarit, 
Wireworms were one of the principal pests of corn in the vicinity of 
Montemorelos and Linares in Nuevo 'Leon and v/ere also reported as attacking 
corn in Colima. Early corn is planted in February and March in*the Tampico, 
region of Tamaulipas and larvae of Elateridae destroy the corn when it 
"begins to germinate, 
Phyllophaga larvae attacked corn in Colima, appearing in May and doing 
much damage, 
Sphenarium sp. and Taeniopoda eques Burn, started attacks on corn in 
the region about Ixtlan del Rio, Nayarit, during June. 
Red spiders, Tetranychus sp., were infesting corn in •Colima and near 
Torreon, Coahuila. These inse*cts were very serious during June over the 
greater part of the Camargo region in Chihuahua, , . . 
Estigmene acraea Drury was observed on alfalfa in the district of 
Lampazos, Nuevo Leon, „..-.'. 
The alfalfa caterpillar Autographa gamma californica Speyer, which 
attacks the leaves and flowers of alfalfa, clover, and likewise "barley, pea, 
and cabbage, had been scarce during the period in Lower California, vicinity 
of Mexicali, 
Cotton is planted in April and May in the vicinity of Yavaros, Sonora, 
and Anthonomus grandis Boh. causes great damage to this plant every year 
and requires extensive control measures.- This was one of the principal 
cotton insects during June in the environs' .'of Mier, Tamaulipas, and was 
also common in Coahuila; although numerous there are no indications that 
they are making any intensive invasions this year except in the vicinity 
of Lagunera where control measures were applied, 
Alabama argil lacea Hbn. is important in Coahuila when it appears 
early but it is not very common this year and for that reason is not causing 
serious injury. In general, it occurs about every four years, raid at 
present is of no importance. It was, however, one of the principal cotton 
insects during June in the Mier region of Tamaulipas, attacking the plants 
when they are a few days old. 
