Tebraska 
-263- 
COTTQ MgDOI 
30TTCMC0D BOILER ( ?lec troiera sos later Fat.) 
M. H. Swerik (July 15-August 1): 'This insect has been fre- 
quently reported attacking cottonwood during the last tro weeks, 
Ohio 
Nebraska 
Illinois 
ELM 
ELM EORER ( Saperda tr icentata 01 iv.) 
E. J. Mendenhall (August 10): I find an outbreak of the elm 
"borer at Dayton on American elras and some damage is being done. 
'•:. H. Swenk (July 15-A-ugust l): This insect has been fre- 
quently reported attacking elms during the period covered by 
this report. 
ELL COCKSCOMB GALL ( Colonha ulmicola Pitch) 
" : . ?. ^lint (August 21): 'The cockscomb gall of elm is being 
received in a little more than normal numbers. 
HACKBEKRY 
Nebraska 
HACXBERRY NIPPLE GALL ( Pachypsylla celtidis-manna Li ley) 
M. H. Swenk (July 15-August 1): Luring the third week in 
July we began to receive complaints of unusual infestation of 
hackberry trees with the hackberry nipple gall, These reports 
were sent in from Colfax, Hall, and Buffalo Counties, 
Ohio 
HICKORY 
HICKORY TWIG BORER ( Chramesus hicoriae Lee . ) 
E. "7. Mendenhall (August 2): I find an outbreak of the hick- 
ory twig borer at Linworth, Franklin County. The dead twigs 
are qui t e c on sio i cuous . 
LARCH 
LARCH SAWFLY ( Ifematus erichs onii Hartig) 
Connecticut R. B. Friend (August 24): A plantation of European larch 
was partly stripped by Lygoeo ncmatus eri chsonii at Middle burg 
this year. Larvae are now in cocoons in the ground. 
