Michigan 
Mexico 
- 185 - 
R. H* Pettit (ETuly 22); Tie have had serious attacks of the 
"bean and seed-corn maggot g worse than anycother in sever f* 
years, Inquiry into conditions shows in most cases that the 
land was seeded late, owing bo our extremely late sprang, 
and that the seed was sown deeply, often with fresh manure 
applied just before plowing. Those conditions are undoubtedly 
very favorable from the standpoint of the insect. Bean-growers 
are very prone to blame the work of the bean maggot on 'the 
bean weevil and are constantly wr it ing in to get seme statement 
whereby they can place the blame on this other insect and, 
consequently, claim damages from the seedsman. This mistaken 
notion on the part of the growers has necessitated the 
publication of many articles exonerating seedsmen from 
responsibility in causing the outbreak of maggots. 
BEAN TINGITID' (C arga phia ir idescens Champ.) 
R. H. Van ZwalwaKrtnssg (June 25): Eggs and all stages of this 
insect were 3bunaant on beans near Los Mochis, Sinaloa, in 
February. Determined by Dr. Carl J. Drake, 
Rhode Island 
New York 
Wisconsin 
PEAS 
PEA APHID (lllino'ia pi si Kalt.) 
A* E. Stene (July 
IS): The pea aphid has shown up in a few 
places in considerable quantities but I have examined a large 
number of fields of peas where apparently not a single aphid could 
be found, 
L. C. Tyler (June 21); Aphids are becoming very numerous 
in some plantings in Nassau County* 
W» 3* Davis (June 28): Rather abundant in certain plantings 
in Suffolk County. 
J. E. Dudley, Jr„ (June 30): Attacking peas in Columbia and 
Dodge Counties. They are slightly more 'abundant than normal, 
considering a late season., and have greatly increased since 
last month by 1,000 per cent or more. Br eat abundance of 
.syrphias ani coccinellids of several species, each attacking aphids 
/alfalfa. Fungous disease prevalent in certain fields and has 
cut aphid down to small fraction of its original numbers in 
many Melds of alfalfa and peas, Syrphids and coccinellids 
stij.i scarce in pea fields. Unusually cold, wet season, in 
southern part, of State from three to four weeks late. All the 
way from 15 to 20 -per cent of crop destroyed in some pea fields 
and 90 per cent or ever in other pea fields and most alfalfa 
fields. In one or two alfalfa fields watched constantly the 
fungous has twice cleaned up aphids and during the last three 
days it has spread with thebjgreatest rapidity to certain pea 
fields. High per cent of syrphid larvae found parasitised. 
