UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 554 
F 
SG 
Contribution from the Bureau of Entomology 
L. O. HOWARD, Chief 
Washington, D. C. Vv September 21, 1917 
THE CRANBERRY GIRDLER. 
By H. B. SCAMMELL, 
Entomological Assistant, Deciduous Fruit Insect Investigations. 
CONTENTS. 
Page. Page 
fmportance,of the pest: 2.522... 223 et 1 |} Seasonal history......--..- SIU Peers Mee ee cS a A Uf 
STORY Se cokes CS ISIS Be aine a POM a 2 Naturakenemies ci ascre oa. ae. Nokes atte ees 12 
DAS WiLOMOe/ es wie ieee! GE as es rs ee a Zi PVeMedialIMeasSUnes: se. eke pe STN Rew 13 
Hood ip lamt se eee sy: sem ee pee gaat 2 | Recommendations for control.............-.... 19 
Feeding habits and destructiveness........_..- Sua i beraGure CiLed ee te ss ee! en ae Ne giae ceiagan, 19 
Description of the cranberry girdler..........-.- 5 
IMPORTANCE OF THE PEST. 
The severity of the attacks of the cranberry girdler -(Crambus 
hortuellus Hiibner) upon cranberry vines, together with its general 
distribution throughout the cranberry-producing regions of the 
United States, marks this pest as one of prime importance to this 
industry. 
The investigations into the seasonal history of the girdler and the 
observations on various methods employed to control it were made 
in New Jersey throughout a period covering nearly four years.? 
Bog-management practices in New Jersey are diverse, and many 
opportunities have been offered to note the effects on cranberry- 
girdler infestations following one practice or another. Although it 
was stated by Smith (9, p. 21-24)° in 1903 that there is no such 
destruction of large tracts in New Jersey as in Massachusetts, it is 
apparent at this time that the girdler has become more of a pest each 
i1Orambus hortuellus ; order Lepidoptera, family Pyralidae, subfamily Crambinae. 
2 During the field seasons of 1914 and 1915 the writer was assisted by Mr. H. K. 
Plank, of the Bureau of Hntomology, and opportunity is here taken to acknowledge Mr. 
Plank’s services, particularly in the field of insect photography. The work has been 
under the general supervision of Dr. A. L. Quaintance, Hntomologist in Charge of 
Deciduous Fruit Insect Investigations, Bureau of Entomology. 
3 Reference is made by number to ‘“ Literature cited,” p. 19. 
88633°—Bull, 554—17 1 
