300 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



Tyj>e habitat. — ^Associated with Dendroctonus frontalis Zimmer- 

 mann. 



Type locality. — Gloucester County, Va. 



Ty/^e.— U.S.N.M. No. 1T70. 



Described from a single female collected by L. A. Hetrick, May 1939. 



The palpi, dorsal setae, and tarsal tibial setae arrangement are dis- 

 tinctive for this species. 



CHEYLETIA WELLSI, new species 

 Plate 13, Figxjbes 99-102 



Female. — Small mite. Palpi short, thick ; palpal femur wider than 

 long, swollen, with small dorsal tubercles and squamiform dorsal seta ; 

 genu with similar seta on posterior margin of segment ; seta on palpal 

 tibia narrow, slightly spined; claw with G-8 teeth; outer comb as long 

 as claw with about 15 teeth; inner comb shorter and with about 20 

 teeth. Eostrum covered with tuberculate shield ; peritreme composed 

 of medium-sized segments; posterior of rostrum without tubercles, 

 striated. Anterior shield trapezoidlike, covering most of propodo- 

 soma, corners rounded, with four pairs of squamiform serrate mar- 

 ginal setae and five pairs of dorsosubmedian staghornlike setae. A 

 single pair of eyes on edge of shield. Hysterosomal shield narrowing 

 rapidl}' toward rear, corners broadly rounded, with four pairs of 

 squamiform serrate marginal setae and two pairs of dorsosubmedian 

 staghornlike setae; a single pair of squamiform serrate setae near 

 anterior corners of shield. Genital setae simple; anal setae serrate. 

 Tai^sus I, 76)u. long; tibia I, 30/a long; tarsus with a simple sensory 

 organ more than one-half as long as tarsus ; guard seta not seen but 

 probably short, fine, and simple; tibia with a large dorsal squamiform 

 serrate seta and a small clavate sense organ. Legs I and IV short, 

 about 186/1, long. Length of body 253/x, including rostrum 363/*; 

 width 200/x. 



Type habitat. — On navel orange. 



Type locality. — Azores, intercepted at Philadelphia, Pa. 



T'y^^e.— U.S.N.M. No. 1771. 



The female type was collected from navel orange, Azores, inter- 

 cepted at Philadelphia, Pa., February 9, 1945, by A. B. Wells, for 

 whom the mite is named. Other specimens were collected as follows: 

 On Eibiscm leaf, Mexico, at Hidalgo, Tex., May 1, 1936, by F. E. 

 Swan and A. L. Williamson; on Saccharum, oiflcinarum^ Mayagiiez, 

 Puerto Kico, April 29, 1912, by H. K. Plank; on Ananas sp., Canal 

 Zone, at Hawaii, July 16, 1936, by Uyeda; on Lantana camara., St. 

 Augustine, Trinidad, British West Indies, May 28, 1937, by R. G. 

 Fennah; on pineapple leaf, Cuba, at New York, May 18, 1936, by 



