ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SHCTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XVII. 



MAY, 1906. 



No. 5. 



CONTENTS: 



Williamson and Calvert Copulation of 

 Odonata 143 



Skinner A ne\\ Ichneumonid i.v 



Nason Parasitic Hymenoptera from Al- 

 gonquin, Illinois IV. 151 



Hart Notes of a winter trip in Texas, 

 with an annotated list of the Or- 

 thoptera 154 



Fall On the genus Trachykele, with 

 notes and descriptions of other 

 North American Buprestida- 160 



McClendon Notes on the True Neurop- 



tera 169 



Banks On the Perl id genus Chloro- 



perla 17) 



Rowley Notes on Papilio ajax 175 



Kunze Stemmed ( < ici " ins ' <\ I < lr;i poly- 



phemus 177 



Editorial iso 



Notes and News i s i 



Doings of Societies 182 



Copulation of Odonata. 

 I. BY E. B. WILLIAMSON. 



In ENT. NEWS, February, 1899, page 42, I questioned, for 

 the first time, the accepted statement that in pairing the male 

 dragonfly grasps the female by the prothorax. No observa- 

 tions by others, so far as I know, have confirmed or corrected 

 this observation which pointed out that, in some of the Ani- 

 soptera at least, the female was grasped by the head. Ob- 

 servations made during the season of 1905 permit the record- 

 ing of some details in the method of ' ' coupling ' in the 

 suborder Zygoptera. The procedure, for the sake of clear- 

 ness, may be classified and subclassified as follows : 



A. The two jaws of the pincers by which the male grasps the female, 

 formed by (i), the superior appendages, and (2), the inferior 

 appendage. In couple the inferior appendage rests on top of 

 the head, and the superior appendages on the rear of the 

 head of the female. SUBORDER ANISOPTEKA. Positive ob- 

 servations in the case of Ce/iffieinis, Syinpclriun, (Libellu- 

 linae), Gomphus (Gomphinae), and Aeslina ( Aeshniiuc). 



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