oa We yes 
Hymenopterous parasite of alfalfa weevil abundant.--S. J. Snow, 
reporting from Fallon, Nev., says "Bathyplectes curculionis Thoms. ad-— 
ults have been swept repeatedly, often with a catch of five or six to 
every 25 strokes. More than half of the weevil cocoons examined have 
contained the cocoons of this common parasite." 
Toxoptera graminum Rond. as a pest on timothy.--"A field of tim- 
othy near Carlisle, Pa., was found by J. S. Pinckney on May 9 to be 
heavily infested with Toxoptera graminum," reports Chas. C. Hill. "At 
this time Mr. Pinckney observed that the field was already showing all 
the characteristic 'spots' of this type of infestation, scattered through— 
out the field and varying in size from a few feet in diameter to 20 
yards. The field has now been entirely ruined from this cause and will 
be plowed up. It is unusual to find serious infestation from this spe- 
cies of aphid in this section of the country, and F. M. Wadley believes 
that it has never before been reported as working on timothy in injuri- 
ous abundance. These aphids were plentiful in near-by oat and timothy 
fields but were not doing any outstanding injury to them. The determi- 
nation of the species was verified by F. M. Wadley." 
Wheat joint worm issues late in QOregon.--T. R. Chamberlin, Forest 
Grove, Oreg., reports that "The first adults (of Harmolita tritici Fitch) 
issued in the Molalla, Oreg., district on May 6, 9 days later than the 
first issuance in 1931 and 19 days later than in 1930. According to our 
studies of accumulated temperatures above 40° F. for the daily means of 
February, March, and April during the past seasons, emergence would have 
been expected on about the same day as last year, but exceptional cloud— 
iness with rain and low maximum temperatures in the spring of 1932 pro- 
duced, agriculturally, an unusually late season and doubtless these con-— 
ditions retarded the issuance of H. tritici. As in former years, there 
was considerable variation in the amount of issuance in different fields 
on a given date, examination of stubble showing practically no issuance 
in some fields by May 16." 
Behavior of wheat joint worm in locating wheat-stem nodes.——"Just 
how the adult of Harmolita tritici locates the covered and’ invisible 
nodes (of the wheat stem) has been conjectural," says.F, F. Dicke, Ogagie 
Charlottesville, Va., laboratory. "Recent studies have revealed that 
only nodes that have developed so as to come in firm contact with the 
surrounding sheath, or those exposed beyond the sheath, are susceptible 
to Oviposition. The nodes are located by the vibratory tapping of the 
sheath with the antennal clubs of the insect. It is apparent, since 
the stem is solid at the node, that this point is perceived by the sense 
of touch. The insect encounters considerable difficulty in placing eggs 
at exposed nodes, probably because the tissues have lignified consider- 
ably at this stage of nodal development." 
é 
survival of corn-earworm pupae high in Virginia.--Mr. Dicke also 
reports that "pupal survival of Heliothis obsoleta Fab. in hibernation 
Cages examined on May 15 was higher than in recent years. The average 
