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INSECT CONDITIONS IN GUATUOLA DURING JANUARY AND FEBRUARY, 1931 
Mars ton Bates 
12 Calle Oriente No. 1, Guatemala. 
Aphids (Aphiidae) are among the most injurious insects of agriculture, 
and we have many injurious species in Guatemala. 
Aphis asclepiadis Fitch is very common in the region of Tela, 
Honduras, on the flowers of Asclepias sp. 
Aphis gossipii Glov. is one of the most destructive aphids in the 
United States. In Lancet ilia, Honduras, it has., "been found on Annona sp. 
and Hibiscus sp. In the region of Antigua, Guatemala, it has been 
attacking the avocada ( Persea americana ) and the loquat ( Eriobotrya 
jj aponica )-. A very heavy infestation of this aphid on watermelon was found 
in the vicinity of Amatitlan. Two species of syrphidae were common 
predators, and may serve to check the outbreak. 
Brevicoryne brassicae L. is the common aphid of white cabbage. It 
has been found at Tumbador and San Marcos. 
Macro siphum luteu m Buckt. was found in an orchid in Tumbador. 
Two species of My z aphis attack roses in Colomba and Tumbador. 
Myzus persicae Sulz. has been found on oranges at Guatemala. 
Toxoptera aurantiae Boyer is the common citrus aphid in Guatemala. 
It lias also been found attacking cacao .and coffee in Zacapa, Colomba, 
Antigua., Retalhuleu, and Guatemala. 
Ncotoxoptera sp. was found injuring fri jol ( polichos sp. ) at 
Chimal t enang o . 
Severe injury to potatoes by wireworms (Elateridae) was reported 
from Tecpan. 
Cerataphi s lataniae Boisd. is an aphid that attacks the young palms 
in tropical America. In Lancetilla, Honduras, it attacks the palm 
Ptychosporma sp. 
Stenoma annonella Sepp. - A common pest in lowlands of Honduras, 
it was bred from Annona marie at a from Virginia. It is our first record 
from this country. The fruits of various species in the high lands are 
frequently infested with two species of Lepidoptera, but the Stenoma has 
not so far been found. 
The oviposition scars of an undertermined insect were very common 
in certain fincas of the Antigua region in February and March of last 
year, but not r utside of this district. At that time I was unable to 
