ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXVI. 



JANUARY, 1915. 



No. i. 



CONTENTS: 



Lyon The Ecology of the Dragonfly 

 Nymphs of Cascadilla Creek (Odo.) i 



Ramsden A new Pieris from Cuba 

 (Lepid.) :5 



de la Torre Bueno The Cimex on Amer- 

 ican Bats ( Hemip., Heter ) 16 



Van Duzee Descriptions of three new 

 species of the Dipterous genus Scia- 

 pus with a key to the North Ameri- 

 can species 17 



Rau The Longevity and Mating Hab- 

 its of Dichromorpha viridis Scud. 

 (Orth.) 27 



Townsend Corrections to Paper on 

 Andean Muscoidea (Dipts 1 28 



Alexander A Second Bromeliad-Inhab- 

 iting Crane-fly (Tipulidae, Diptera) 29 



Cockerell The Real Trigona dorsalis 

 Smith Rediscovered ( Hym. ) 30 



Girault Notes on Trichogrammatidae 



(Hymen.) 



Editorial Hints on Packing Insects for 



Transportation 33 



Change of Address 34 



Baumberger Notes on the Siricidae of 



California (Hym.) 3.) 



Identification of Specimens 35 



Laurent Army Worm Plague in Phila- 

 delphia ( Lep. ) 36 



Greene Two Rare Wasps ( Hym. 1 37 



Butler Dragonflies Devouring Winged 



Ants (Odon., Hyim-ti. ) 37 



Entomological Literature 38 



H. S. Review of Seitz's Macrolepidop- 



tera 41 



Doings of Societies Feldman Collect- 

 ing Social (Dip., Lep.. Col. ) 42 



Obituary August Weismaun 



Charles Sedgwick Minot 47 



The Ecology of the Dragonfly Nymphs of Casca- 

 dilla Creek (Odon.). 

 I'.y MARY B. LYON.* 



(Plate I.) 



CONTENTS. 



Introduction I 



Aquatic Situation 2 



I Distribution 3 



II Epiphytes and Epizoa 4 



III Food of the Nymphs 



IV Efficiency of Shelter II 



Bibliography M 



The work on which this paper is based includes observa- 

 tions on the nymphs of dragonflies occurring in a limited part 

 of Cascadilla Creek near the Cornell rniversity Campus. 

 Representatives of most of the families of this group are found 



*Contrihution from the Limnological Laboratory of the Department 

 of I'.nfoniolo'jy in Cornell rniversity. 



