6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



/ a seta that is merely frayed, i.e., with only i or 2 barbs. 

 FL dorsal flap extending posteriorly from cheliceral base. 

 I.e. intersensillary crater, a delimited circular area on the scutum, anterior 

 to SB and between ALs, that is devoid of pits or punctae. 

 A^ a seta that is nude. 

 PL length of posterolateral seta. 

 PLs the posterolateral setae. 

 PPP-i perpendicular distance between a line connecting first pair of usurped 



setae and posterior margin of scutum. 

 PPP-2 perpendicular distance between a line connecting second pair of usurped 



setae and posterior margin of scutum. 

 PPW-i distance between first or anterior pair of usurped scutal setae. 

 PPW-2 distance between second or posterior pair of usurped scutal setae. 

 PSB perpendicular distance between a line connecting sensillary bases and 



posterior margin of scutum. 

 PW distance between bases of posterolateral setae. 

 SB distance between bases of sensillae. 

 SD length of ASB plus PSB. 



DESCRIPTIONS OF SPECIES 



GAHRLIEPIA (GAHRLIEPIA) EXILIS, new species 



Figures i-io 



Diagnosis of larva. — Agrees with G. (G.) cetrata Gater, 1932, and 

 G. (G.) saduski Womersley, 1952, in that the scutum lacks very large 

 pits or scrobiculi and in having a total of 8 scutal setae (G. saduski 

 somewhat variable in this regard). Instantly separable from both 

 species in that the false or usurped scutal setae are marginal, not sub- 

 median; further distinguishable from G. saduski in that coxae III are 

 i-setose instead of bearing 4 setae; AL over 62 microns instead of 

 approximately 35. The very long AL bristles also readily distinguish 

 this species from G. cetrata, where the ALs are about 36 microns. 



Description of larva. — Body: Subovate, about 244 x 155' microns 

 when unengorged. Eyes double, anterior eye about 10 x 5 microns, 

 about twice the size of the posterior one ; on an ocular plate ; at level of 

 sensillary bases ; plate near but not contiguous with scutum. Gnatho- 

 soma: Chelicerae long, about five to six times as long as broad at base ; 

 with a distinct apical tricuspid cap. Cheliceral bases and palpal coxae 

 and femora punctate. Palpal setal formula as follows: B/B/BBB,^ 

 the setae (barbs) usually subpectinate. Palpal tarsus with a basal 

 striated rod and four plumed setae. Palpal claw 3-pronged but usually 



5 The first letter in the palpal formula refers to the seta on the palpal femur, 

 the second to that of the genu, and the next three to those of the tibia — dorsal, 

 lateral, and ventral, respectively. The letter N in the palpal formula signifies 

 the seta is nude ; B, branched, b, sparsely branched ; and /, frayed. 



