XXXI, '20J ENTOMOLOGICAL NEWS 277 



Studies in the Genus Myodites Latreille 

 (Coleoptera, Rhipiphoridae). 



By W. DWIGHT PIERCE, Denver, Colorado. 



The following studies are based upon a small series of speci- 

 mens, loaned me by Mr. Warren Knaus. This series is 

 especially interesting becauses it furnishes a new type of 

 female. In all species hitherto examined by myself the 

 female antenna is monopectinate, and the male antenna is 

 biflabellate, with very long rami of which the tips are about 

 even at apex. In the species Myodites knausi described 

 below the female antenna is monoflabellate, with the rami 

 longest at base, diminishing in length toward the apex. 



Table of American Species of Myodites. 

 I First joint of hind tarsi elevated, obliquely truncate and emarginate 



at tip ; elytra yellow 2 



First joint of hind tarsi long, but slightly thicker, not obliquely 



truncate 10 



2 Female abdomen black, or partly black 3 



Female abdomen yellow or red, male abdomen?; or female abdomen? 



male abdomen dark brown or black 5 



3 First joint of hind tarsi stout, not more than one-half longer than 

 second; prothorax sparsely punctulate, smooth on each side 



and front; length 6 mm.; New York luteipennis LeConte 



First joint of hind tarsi long 4 



4 First joint of hind tarsi as long as fourth, slightly thicker than the 

 second; prothorax sparsely punctulate behind, nearly smooth 

 in front; female antennae black, pectinate; length 5 mm. 



Nevada nevadicus LeConte 



First joint of hind tarsi longer than the fourth, twice as long and 

 thicker than the second and third combined; prothorax densely 

 punctulate behind, nearly smooth on scutal area; abdomen of 

 both sexes with considerable yellow. Female pygidium black; 

 female antennae yellowish, flabellate; length 9 mm.; Utah 



knausi n. sp. 



5 Prothorax sparsely punctulate or smooth on disc 6 



Prothorax densely punctulate 9 



6 Prothorax smooth on disc 7 



Prothorax partially smooth on disc vierecki Fall 



7 First joint of hind tarsi stout and thick, not more than one-half 

 longer than the second; vertex sparsely punctulate. obtusely 

 rounded. . 8 



