MITES OF FAMILY CHEYLETIDAE — BAKER 273 



Type host. — Pigeons and passerine birds. 

 Type locality. — Probably France. 



NEOCHEYLETIELLA SMALLWOODAE, new species 



Pi^vTE 6, Figures 6-9 



Female. — This species is broad, rounded, with small rostrum and 

 palpi. Palpal setae long, the palpal femur and genual setae serrate, 

 and the tibial and ventral setae appear simple ; claw small and simple. 

 Peritreme composed of 10 rather large segments. Propodosomal 

 shield small, longer than wide, angularly pyriform with a pair of 

 anterolateral setae; two pairs of anteromarginal setae and three pairs 

 of shoulder setae ; all propodosomal setae appear finely serrate. Hys- 

 terosoma with three pairs of anterior setae, the outer two pairs long 

 and distinctly serrate, the inner pair short and appearing slightly 

 serrate; two pairs of simple dorsal setae around anal opening; three 

 pairs of longer setae on posterior margin of body, the anteromarginal 

 pair serrate, the other two pairs simple. Legs short; leg I about 

 155/x long; leg IV about same length and reaches to posterior edge 

 of body. Tarsus I as figured, distinctive in having a strong dorsal 

 anterior protuberance with heavy spines. Tibia I with a minute rod- 

 like sensory seta. Length of body 455ju,, including rostrum 546/1, ; width 

 323/i. 



Male. — ^In general similar to female. Propodosomal setae arranged 

 as in female, but as far as can be determined the shield setae are simple, 

 and the pair of inner shoulder setae appear to be simple. Hystero- 

 soma with few setae, a single pair of long serrate anteromarginal setae ; 

 genital opening dorsal and in center of hysterosoma, the genital plates 

 with three pairs of short simple setae, and anterior and lateral to the 

 genital opening are three pairs of short setae as figured, only the outer 

 pair appearing slightly serrate. Leg I not reaching to tip of rostrum ; 

 leg IV reaching past posterior margin of body. Length of body 300/i, 

 including rostrum 366/i, ; width 260/x. 



Type host. — Leucosticte australis. 



Type locality. — Guffey, Colo. 



ry^oe.— U.S.N.M. No. 1755 . 



The type female, two paratype females, and one male were collected 

 by C. Rohwer, December 5, 1939. Another female was collected from 

 robin at Fort Dupont, Del., April 13, 1933, by H. S. Peters. 



This mite differs from N eocheyletiella heteropalpus (Megnin) as 

 figured, in that Megnin's species possesses much long body setae, ex- 

 cept for the two anterior propodosomatic pair which are extremely 

 short in the female. 



