ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XIX. 



JUNE, 1908. 



No. 6. 



CONTENTS: 



Ewing A new genus and species of 

 Oribatidae 243 



Rohwer Some Crabronidae from Colo- 

 rado and Ne\v Mexico 245 



Fernald Notes on Krcbus odoratus L. 260 



Wilson The green Aphis of the Chry- 

 santhemumAphis rufo maculata 

 n. sp 261 



Haimbach New Pyralidae 263 



Williamson Three related American 



species of Aeshna (Odonata) 264 



Tucker Incidental studies of new spe- 

 cies of Oscinis 272 



Haseman Notes on the Psychodidfe. . 274 

 Manee Some Observations at South- 

 ern Pines, N. Carolina 286 



Editorial 290 



Entomological Literature 2<>i 



Notes and News 291 



A New Genus and Species of Oribatidae. 



BY H. E. EWING, Arcola, 111. 



(Plate XI.) 



The new genus described in this paper is the second of this 

 group peculiar to North America. The first genus described as 



peculiar to this country was Gymno- 

 baics, Banks ; recently I have added to 

 my collection two new species which 

 belong to this genus. The genus Tu- 

 uiidalvus described in this paper is per- 

 haps nearer to Lohmannia than to any 

 other of the known genera. 



TUMID AL YDS n. gen. 

 Pteromorphse absent ; cepthalo- 

 thorax anchylosed with abdomen ; 

 mandibles chelate; lamellse absent. 

 Legs short and stout. There is no ven- 

 tral plate to the abdomen. The dorsal 

 plate extends down over much of the 

 ventral part of the abdomen and 

 touches both the anal and genital cov- 

 ers (Fig. i). Anal and genital covers 

 separated only by a rim common to 

 botn - Unguis tridactyle. The ab- 



243 



