Mississippi 
Pennsylvania 
New York 
- 141 - 
R, W. Harned (May 21): During the past month many complaints 
have heen_received from all .parts of Mississippi in regard to 
the injury caused to roses by thrips. Specimens received from 
several correspondents have "been sent to Prof. Glenn W. Herrick 
at Cornell University. In each case only nymphs were present. 
Prof. Kerrick has tentatively identified them as Frankliniella 
tritici. 
SORIMM ROACH ( Pycnoscelus surinamensis L.) 
C„ A. Weigel (May lU) : Under. date of April 2, "we received 
specimens of the Surinam roach, Pycnoscelus surinamensis , from 
the vicinity of Philadelphia. In the letter which accompanied 
these specimens the statement was made that they were seriously 
injuring roses grown in greenhouses. This species has previously 
"been reported as injurious to roses, lilies, poinsett.ias, and 
ether plants grown under glass. 
Mr. Doucette in a letter dated May 10 makes the following 
report: A very heavy infestation of the Surinam roach has "been 
discovered through H. F, Diets and T. L. Guy ton in one of the 
large commercial rose houses in this vicinity. An examination 
of this infestation revealed that they were -feeding on rose 
and that the infestation is so heavy that the stems of probably 
30,000 or more plants have been girdled for about 2 to U inches 
above the ground, which will make it impossible for the plants 
to "come back- after they have been rested and !i cut back." We 
have seen only 3 or h cases of feeding on any other parts of 
the plants. The owners have already used over 150 gallons of 
kerosene in trying to control these roaches. This has been 
applied on the walks and on the edges of the rose beds. The 
infestation is still very heavy although very large numbers have 
been killed by the oil. We are now conducting experiments with 
various insecticides and chemicals that have been reported as 
effective against this species. 
' POTATO APHID (I llinoia solanifoiii Ashm. ) 
C. R. Crosby and assistants (May l6) : Has been observed to be 
very abundant on this host in certain areas.' 
SPIRAEA 
APHID IDAS 
Indiana 
Missouri 
J. J. Davis (April 30): Plant lice are unusually abundant at 
Lafayette; aphids on spiraea and '"box-elder especially abundant. 
Parasites and predacious enemies becoming abundant. 
L. Haseman (May lk) : This louse is with us every year at this 
season. I am not sure as to the species. It is general all over 
the State. 
' STJOWBALL 
Nebraska 
SF0WBALL APHID ( Anur aphis viburnicola Gill. ) 
M. H. Swenk (April): The first complaint" of injury by the 
snowball aphid was received from Platte County on April 27. 
