NO. 6 CHIGGER SUBGENUS GAHRLIEPIA — TRAUB AND MORROW 29 



far posterior; PPL-i submarginal, not marginal; with but one pair 

 of sternal setae between coxae III. Further separable from G. dup- 

 liseta in that the scutum is relatively broader, three-fourths as broad 

 as long instead of three-fifths as broad as long, as in G. dupliseta; the 

 PPL-i setae not submedial, but merely submarginal. 



Description of larz>a. — Body: Subovate, about 247 x 165 microns 

 in slightly engorged holotype. Eyes double, anteriormost somewhat 

 the larger. Gnathosoma: Chelicerae about four to four and a half 

 times as long as broad at base. Palpal setal formula B/B/BNB, the 

 B setae subpectinate. Palpal claw 3-pronged. Scutum: Relatively 

 broad, 88 x 117 microns in holotype. Anterior margin fairly straight. 

 Lateral margins gently angled near midpoint. Caudal margin rather 

 broadly rounded. With 2 kinds of punctae as in G. gemina. AL 

 setae bushy, thick, three-fifths length of PLs; displaced from antero- 

 lateral angles by the nearly contiguous PLs. With 3 pairs of dorsal 

 setae usurped by scutum ; a submarginal pair at lateral angles of 

 scutum ; a medial pair at three-fourths level, and a caudomarginal 

 pair. With a pronounced oblique ridge anterior to sensillae bases. 

 Sensillae inserted at level of anterior sixth of scutum. Sensillae cla- 

 vate. PPW-i is 64 (±7) ; PPW-2, 37 (±4) ; PPP-i, 62 (±3) ; 

 PPP-2, 19 (±3). (For purposes of homology with G. gemina and 



STANDARD MEASUREMENTS IN MICRONS 



^Sit/,-!: u.^'^Q^q Coxa II SD ASB Tarsus HI 

 Holotype, U.S.A.T.C. 



No. 3562-2 37 52 39 20 97 9 32 51 35 52/52=1.0 0.4s 2.6s 52/46=1.13 



Paratypes (2) : 



Mean 40 54 42 19 103 8 34 S3 36 i.o 0.45 2-8 1.09 



Range -|-or — 2 2 4 i 61 4 4 4 0.05 0.04 0.15 0.05 



allies, the caudomarginal usurped pair are considered here when 

 measuring PPW-2 and PPP-2, and not the submedial third pair.) 

 Body setae: Dorsal setae usually slightly thicker than PLs; about 28 

 in number (excluding scutals), arranged 2.4(2). 4(2) , the rest irregu- 

 lar. Ventral setae about 40 in number, of which about 22 are postanals. 

 These postanals much thinner than dorsals. True ventrals even 

 thinner ; short, about 15 to 18 microns, with fine pinnae. Legs: Coxae 

 I -setose. Coxa III relatively broad, ratio of length to breadth about 

 1. 18; with seta almost anteromarginal. Sternal setae of usual type 

 (as in G. exilis, new species). Sensory setae as in G. exilis. 



Type material. — Holotype (U.S.A.T.C. No. 3562-2) ex Simcits 

 caerulaeus fulvocinereus (Anderson), the white-toothed shrew, As- 

 sam, 21 miles north of Ledo on Stilwell Road (in scrub terrain), 

 August 28, 1945 (U. S. A. Typhus Commission) (along with G. dup- 



