ENTOMOLOGICAL 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL 



THE ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXVIII. 



MAY, 1917. 



No. 5. 



CONTENTS: 



Banks New Mites, mostly Economic 

 (Arach., Acar. ) 193 



Cockerell New Bees from Costa Rica 

 ( Hym. ) 200 



Torre Bueno Life-history and Habits 

 of the Larger Waterstrider, Gerris 

 remigis Say ( Hem.) 201 



Metcalf Two new Syrphidae ( Diptera) 

 from Eastern North America 209 



Skinner Lycaena lygdamus Double- 

 day and its Races with a Descrip- 

 tion of a New One (Lep. ) 212 



Weiss Additions to Insects of New 

 Jersey, No. 5 214 



Blaisdell Studies in the Tenebrionid 

 Tribe Eleodiini, No. 2 (Coleop.)... 221 



Drake Key to the Nearctic Species of 

 Gargaphia with the Description of 

 a New Species (Hem., Heter.) 227 



Editorial Entomology as a National 



Defense 229 



Mr. E. B. Williamson's Collecting Trip 



in Colombia 230 



The Destruction of the House Fly 231 



Stiles Notice to the Zoological Profes- 

 sion 231 



Skinner Pupal Differences in Mega- 



thymus ( Lep. ) 232 



McDunnough Synonymic Notes on N. 



American Lepidoptera 232 



The Collector's Exchange. 233 



Blaisdell A correction (Col.) 234 



Chamberlin A correction (Col.) 234 



Entomological Literature 234 



Doings of Societies The American En- 

 tomological Society 237 



Newark Entomological Society 238 



Feldman Collecting'Social 236 



New Mites, mostly Economic (Arach., Acar.). 

 By NATHAN BANKS. 



(Plates XIV, XV). 



The following new species are part of the great amount of 

 material sent to the United States Bureau of Entomology for 

 determination. The species of definite economic value I have 

 described, and also a few that represent peculiar genera, new 

 to the collections. A new arrangement of the genera of red 

 spiders is also proposed, including three new genera. 



EUPODIDAE. 



Notophallus viridis n. sp. (PI. XIV, fig. 4; PI. XV, fig. 14). 



Dark greenish, legs reddish, a red spot on dorsum near tip, and 

 one on venter also near tip ; mouth parts red. Body about one and 

 one-third times longer than broad, almost globose, high and broadly 

 rounded behind, above with scattered, fine, short, simple hairs. Legs slen- 

 der; legs T and IV as long as, or a little longer than body; tarsi T about 

 as long as the preceding joint, tarsus IV plainly a little shorter than 



193 



