l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



pair slightly below lateral "shoulders" of scutum ; second pair at level 

 of scutal midline ; third pair at posterior third. All usurped setae with 

 adpressed setae; somewhat shorter and thinner than true scutals. 

 Sensillary bases inserted at level midway between AL and PL, with a 

 conspicuous ridge anterior to each sensillary base. Sensillae absent 

 in specimens extant. Body setae: Dorsal setae similar to scutal setae; 



STANDARD MEASUREMENTS IN MICRONS 



^^c^^ aJ^-^So Coxa II SD ASB Tarsus III 

 Holotype, C.O.M.R.U. 



No. 30006 47 74 45 26 174 43 35 42 36 74/59=1-25 0-37 2.8 74/60— 1.23 



Paratypes (11) : 



Mean 46 73 43 25 166 41 35 39 35 1-28 0.38 2.9 1.25 



Range +or— 3 3 3 2 12 3 3 3 3 0.07 0.05 o.i 0.06 



about 32 to 34 in number (excluding those captured by scutum) ; 

 arranged 2.4(2).4(2).4(2).6, the rest irregular. With about 50 to 

 54 ventral setae, of which 20 are postanals but which nevertheless 

 are shorter and distinctly thinner than dorsals. True ventrals about 

 21 microns, thin, pinnae virtually inapparent. Legs: Seta on coxa III 

 somewhat submarginal. Coxa III in ratio of 65 (length) : 46=1.41. 

 Legs otherwise as in C exilis, new species. 



Type material.— RoXoty^e (C.O.M.R.U. No. 30006) ex Rattus 

 sabanus (Thomas), Malaya, Selangor, Ulu Langat, August 26, 1952 

 (J. R. Audy and J. L. Harrison, for the Colonial Office Medical 

 Research Unit). Thirteen paratypes as follows: 2 with same data as 

 holotype; 2 ex Rattus bowersi (Anderson), loc. cit., August 2 and 

 October 14, 1952 (J. R. Audy) ; 4 ex Rattus sabanus (Thomas), 

 loc. cit., August 26 and 31, 1951 (R. Traub, for the U. S. Army 

 Medical Research Unit) ; 5 ex Rattus miilleri (Jentinck), loc. cit. 

 (R. Traub), but July 2, 1951. Holotype (U.S.N.M. No. 2157) in 

 U. S. National Museum. Paratypes distributed among collections of 

 U. S. National Museum, Colonial Office Medical Research Unit, 

 Kuala Lumpur, and that of senior author. 



Comment. — Since this chigger was collected from three species of 

 rats that are denizens of true primary forest, and because it was 

 never taken on any of the thousands of Rattus rattus ssp. inhabiting 

 scrub terrain, it is highly probable that G. neterella is a characteristic 

 jungle-inhabiting form. 



GAHRLIEPIA (GAHRLIEPIA) TENELLA, new species 



Figures 35*42 



Diagnosis of larva. — Distinguished from all other nonscrobiculate 

 species in the subgenus which possess normal ALs and PLs (i.e., 



