26 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



(PLs) are longer and stouter than the ALs, as is usually the case in 

 typical Gahrliepia. Both pairs of setae are better developed than the 

 other setae on the scutum. This indicates that our ideas of homology 

 are correct, and that there are not two pairs of ALs. 



GAHRLIEPIA (GAHRLIEPIA) DUPLISETA, new species 



Figures 68-75 



Diagnosis of larva. — Agrees with G. gemina, new species, in that 

 the PL setae adjoin the ALs and the scutum is caudally rounded, not 

 angled. Immediately separable in that the usurped scutal setae are 

 submedian, not marginal ; the PL setae are nearly twice the length 

 of the ALs, instead of merely being in the ratio of lo: 7; PSB pro- 

 portionately far greater {PSB, 122 microns; PSB /SB ratio 3:1, not 

 approximately 2:1), so that scutum is merely three-fifths as broad 

 as long, not three-fourths. 



Description of larva. — Body: Subovate, about 236 x 134 microns 

 in partially engorged holotype. Eyes double, anterior one the larger. 

 Gnathosoma: Chelicerae about four and a half times as long as broad 

 at base. Palpal setal formula B/B/BNB. Palpal claw 3-pronged. 

 Scutum: Relatively long, about three-fifths as broad as long at 

 maxima (82 x 143 microns). Anterior margin slightly concave. Lat- 

 eral margins fairly evenly convex, lacking distinct shoulders, slightly 

 sinuate below level of sensillae bases and at about level of apical 

 three-fourths. Caudal margin convex. With two kinds of punctae 

 as in G. gemina, new species. AL setae relatively thin, somewhat plu- 

 mose. PL setae similar in structure, but extending caudal to slightly 

 below level of first usurped setae. Bases of PL almost contiguous 

 with AL, the separation distance being about twice the diameter of 

 the setal bases. The two pair of dorsal setae captured by scutum are 

 in line with sensillary bases ; thinly but distinctly barbed ; anterior 

 pair about 40 microns in length, inserted about level of midline ; poste- 

 rior pair 36 microns, inserted at posterior seven-eighths. With a dis- 

 tinct ridge anterior to sensillae bases. Sensillae inserted at level of 

 anterior eighth of scutum. Sensillae clavate. PPW-i is 43 ; PPIV-2, 

 39; PPP-i, 76; PPP-2, 26. Body setae: Dorsal setae similar to 



STANDARD MEASUREMENTS IN MICRONS 



^a^t^^Q^'^^a^Q Coxa II SD ASB Tarsus III 

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



No. 3562-1 42 56 40 21 122 8 36 60 35 56/52=1.1 0.4 2.7 56/51=1.09 



ALs; about 30 in number (excluding usurped setae) irregularly ar- 

 ranged. Ventral setae about 44 in number, of which about 26 are 



