ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XIX. 



JULY, 1908. 



No. 7. 



CONTENTS: 



Walton Notes on the Life History of 

 Nonagria ohlonga Gr 295 



Smith AnewMellinus 299 



Williamson Three related American 

 species of Aeshna (Odonata) (con- 

 tinued from page 264) 301 



Marlalt Aspidiotus ancylus Putnam 

 vs. circularis Fitch 309 



Pearsall Eupithecia miserulata Grote 312 



Coolidge and Newcomer The Life 

 History of Pontia castoria Reakirt 314 



Grossbeck Plagqdis schuylkillensis : a 

 new Geometrid 315 



Busck Descriptions of two new Gele- 



chidae from California, 316 



Schaeffer New Coleoptera, with notes 



on some New Jersey Histeridae. ... 318 

 Patch Crocigrapha normani Grote ... 321 

 Cockerell Bees of the genus Nomada, 

 belonging to the group of N. de- 



pressa Cresson 323 



Paxson Numerical Distribution of 



Some Insects 324 



Editorial ^38 



Entomological Literature 339 



Notes and News 339 



Doings of Societies 342 



Notes on the Life History of Nonagria oblonga Gr. 

 BY W. R. WALTON, Harrisburg, Pa. 



(Plate XII) 



Early in the spring of 1907 the writer discovered evidences 

 of the larva of a lepidopterous insect boring in the stalks of the 

 common cat-tail rush (Typha) at Harrisburg, Pa. After a 

 diligent search, a dead larva, much discolored, was secured 

 and also the remains of a pupa shell which was within the bur- 

 row of the insect ; these burrows were considerably more than 

 a quarter of an inch in diameter and extended from 8 to 14 

 inches above the surface of the ground, leaving in most in- 

 stances only a thin wall of tissue to support the stalk of the 

 plant. 



As the weather for some weeks after this was unusually 

 cold and stormy, no further observations were attempted until 

 June loth, when a search was instituted in hope of securing 

 the larva above mentioned. We were soon rewarded in finding 

 it in several stages of growth within the stem of the plant. 



From all appearances the larva feeds for a time on the sheath 

 of the stem, as the smaller ones were doing at this time. As 

 it increases in size it bores directly into the succulent central 

 shoot, where it afterward remains until emerging as a mature 

 insect. 



295 



