40 preliminary report ox alfalfa weevil. 



Vertebrates. 



During the season of 1911 the Biological Survey, at the suggestion 

 of the writer, kindly detailed an assistant, Mr. E. R. Kalmbach, to 

 study the bird and other vertebrate enemies of the alfalfa weevil, 

 and the following is a list of vertebrates found to feed on the alfalfa 

 weevil in Utah, as determined by Mr. Kalmbach, May 7, 1911, to 

 July 25, 1911. 



Wilson's phalarope, Steganopus tricolor; killdeer, Oxyechus vociferus; valley quail, 

 Lophortyx calif arnica vallicola; mourning dove, Zenaidura inacroura carolinensis; red- 

 shafted flicker, Colaptes cafer collaris; Arkansas kingbird, Tyrannus verticalis; Say's 



Fig. 2G.—Itoplectis masculator, a parasite of the alfalfa weevil: Adult female: lateral view of first abdominal 



segment at right. Much enlarged. (Original.) 



phoebe, Sayornis sayus; Traill's flycatcher, Empidonax trailli; desert horned lark, 

 Otocoris alpestris leucolsema; magpie, Pica pica hudsonia; bobolink, Dolichonyx oryzi- 

 vorus; cowbird, Molotkrus ater; yellow-headed blackbird, Xanthocephalus xantho- 

 cephalus; thick-billed red-winged blackbird, Agelaius phceniceusfortis; Western mead- 

 owlark, SturneUa neglecta; Bullock's oriole, Icterus bullochi; Brewer's blackbird, 

 Euphagus cyanocephal us; house finch, Carpodacus mexicanus frontalis; English sparrow, 

 Passer domesticux; Western vesper sparrow, Pocecetes gramineus confinis; Western 

 savannah sparrow, Passerculus savannarum alaudinus; Western lark sparrow, Chon- 

 rftstts graminacus strigatus; white-throated sparrow, Zonotrichia albicollis; Brewer's 

 sparrow, Spizella breireri; Western chipping sparrow, Spizella socialis arizonx; desert 

 song sparrow, Melospiza melodia fedlax; green-tailed towhee, Oreospiza chlorura; black- 



