NO. 6 CHIGGER SUBGENUS GAHRLIEPIA — TRAUB AND MORROW 39 



what sinuate beyond PLs. Posterior half to two-thirds of scutum of 

 fairly uniform breadth. Caudal margin very broadly rounded. Scutum 

 appearing reticulated by virtue of prominent subcircular scrobiculi 

 scattered over entire surface. Majority of pits (approximately no 

 in number) subequal in size and about two and a half to three times 

 the diameter of setal bases ; smallest scrobiculi near margins of scutum, 

 and these are flattened ellipses or oblate spheroids. With the usual 

 micropunctae uniformly distributed over remainder of scutum except 

 for a narrow bare area around sensillae bases. AL setae inserted 

 slightly behind low "shoulders" at anterolateral angles of scutum; 

 fairly stout and bushy; quite long, extending to about midpoint of 

 scutum; subequal to PL in length. PLs inserted at level of about 

 anterior fifth of scutum ; resembling ALs. First pair of usurped setae 

 (PPL-i) inserted at level of anterior third of scutum and in vertical 

 line with sensillae bases; resembling PLs but even longer (ii8 

 microns). PPL-2 at posterior third; in line with SB and PPL-i, 

 similar to PLs in morphology and in length. Sensillae bases inserted 

 slightly anterior to line of PLs. Sensillae narrowly clavate; most of 

 club cylindrical in shape. With a weakly sclerotized ridge anterior to 

 each sensillary base. PPW-i is 55 (±6); PPW-2, 52 (±13); 

 PPP-i, 159 (±8); PPP-2, 94 (±6). Body setae: Dorsal setae 



STANDARD MEASUREMENTS IN MICRONS 



:i. t^ F^ cq £, ,0^ PW PIV PIV PIV 



■^ChOo^O,"^"^ a, Q Coxa II SD ASH Tarsus III 

 Holotype, 



No. B-1936S-S... 43 104 59 28 2i6 45 120 123 105 104/82=1.27 0.43 3.7 i04/7O='-49 

 Paratypes (20) : 



Mean 43 103 58 28 216 43 119 126 119 i-3i 0.42 3.6 1.44 



Range + or — 5 8 6 2 20 7 11 13 6 0.09 0.02 0.3 0.05 



resembling scutal setae; about 26 to 30 in number (excluding those 

 captured by scutum) ; rows obscure, but apparently arranged 2.2.8 

 (2). 8(2), the rest irregular. With about 70 to 76 ventral setae, of 

 which about 24 are postanals but which nevertheless are shorter and 

 distinctly thinner than dorsals. True ventrals thin, short, about 18 

 microns in length, sparsely plumed. Sternal setae arranged 2-4(5), 

 the latter row resembling ventrals. Legs: Coxa I with a distinctive 

 spur at caudolateral angle. Coxa III about one and a half times as 

 long as broad (71 by 46 microns=i.54 in holotype). With seta sub- 

 marginal in position. Sensory setae essentially as in G. exilis, new 

 species. 



Type material. — Holotype (No. B-19365-5) ex Rattus alticola 

 alticola Thomas, North Borneo, Mount Kinabalu, Mari Parei, eleva- 

 tion 5,100 feet (R. Traub, for joint U. S. Army-Colonial Office 



