592 



NEW YORK STATE MUSEUM 



Contents 



\ PAGE 



Introductory 331 



Transmittal 331 



nth report 331 



Publications of the office 331 



State collection 331 



Correspondence 332 



General entomologic features... 332 



Losses caused by insects 333 



Injurious insects i 335 



Tenthredo rufo pectus 

 Norton, red-hreasted saw fly.. 335 



Urocerus albicornis Fabr. 

 white-horned Urocerus 338 



Urocerus cressoni Nor- 

 ton 340 



Eacles [Basilona] imper- 

 ial i s Drury, imperial moth . . 342 



Lygus pratensis Linn. 



tarnished plant bug 351 



Notes on various insects 358 



Pyralis costalis Fabr. 

 c lover hay caterpillar 358 



Cecidomyia leguminie- 

 ola Lintn. clover seed midge 359 



Anthrenus scrophula- 

 riae Fabr. carpet beetle... 359 



Elaphidion villosum 



Fabr. oak pruner 359 



Cyllene pictus Drury, 



hickory borer 360 



Galerucella lut eol aMiill., 



elm leaf beetle 360 



Blissus leucopterus Say, 



chinch bug 361 



Plant lice or Aphididae 361 



Pemphigus populi- 



transversus Riley 361 



Chaitophorus species.. 362 

 Callipterus ulmifolii 



Mnell 362 



Drepanosiphum aceri- 



folii Thos...., 363 



Aphis mali Fabr... 363 



Myzus cerasi Fabr 363 



Myzus ribis Linn 363 



Rhopalosiphum species 363 



Thrips tabaci Lind 363 



Publications of the entomologist.. 364 

 Contributions to the collection... 371 



Explanation of plates 875 



Index 377 



[Introduction to address before the eastern New York horticultural 

 society] (Country gentleman, 2 Mar. 1899, 64: 174^*) 



The extension of the upper austral life zone along the Hudson river, and 

 the unexcelled facilities of the stream for the transportation of insects, render 

 this region very interesting and a study of its fauna of great importance. 

 Isolation of orchards is recommended wherever practicable. A few observa- 

 tions on the San Jos6 scale are given. 



Injurious shade tree insects, with special reference to the elm leaf beetle. 

 Address before the Troy scientific association, 6 Mar. 1899. (Portion 

 published in the Troy times, 7 Mar. 1899, A /so in Argus [Albany] 

 12 Mar. 1899, p. 9) 



After the work of the elm borer, Saperda tridentata Oliv., and the 

 elm bark louse, Gossyparia ulmi Geoff., is briefly characterized, the 

 elm leaf beetle, Galerucella luteola Miill. , is treated under the follow- 

 ing heads : injuries, life history and habits, ineffectual measures, spraying with 

 poison, importance of thorough work, approximate cost and the necessity of 

 municipal action. 



1 A bibliography and general account is given of each. 



