NO. 6 CHIGGER SUBGENUS GAHRLIEPIA — TRAUB AND MORROW 23 



Dorsal setae resembling scutal setae; about 42 to 46 in number, ex- 

 cluding those on scutum ; the rows erratic but at times arranged 

 4.4(4) .6(2). 8.8, the rest irregular. Ventral setae about 62 to 66 in 

 number of which about 20 are postanals. Caudal and lateral setae 

 approximating dorsals in length and breadth. True ventrals about 22 

 microns in length; thin, pinnae appressed to stem. Legs: Seta on 

 coxa III medial. Coxa III, ratio of length to breadth 64:42=1.55. 

 Sternal setae 2-2 ; in usual sites ; about 27 microns in length. Sensory 

 setae and dorsal claws as in C exilis, new species. 



Type material. — Holotype (C.O.M.R.U. No. 32133) ex Bandicofa 

 sp. (B. hengalensisf), Thailand, Kanchanaburi, Kanchanaburi (dis- 

 trict) (R. E. Elbel, for U. S. Special Technical and Economic Mis- 

 sion to Thailand, and plague control workers of the Thai Division of 

 Communicable Diseases), June 9, 1952. Fourteen paratypes with 

 same data. One paratype, ibid., but Menetes berdmorei (Blythe), 

 Municipality, i kilo, west (R. E. Elbel), June 9, 1952. Five para- 

 types, ibid., but collected at Rat Buri, Ban Pong, June 14 and 17. 

 Holotype (U.S.N.M. No. 2160) deposited in U. S. National Museum. 

 Paratypes distributed as for G. exilis, new species. 



GAHRLIEPIA (GAHRLIEPIA) GEMINA, new species 

 Figures 59-67 



Diagnosis of larva. — Along with G. hirsuta (Radford, 1946), 

 unique in that the PL setae have moved anterior to adjoin the ALs.^ 

 Immediately separable from G. hirsuta in that the posterior margin 

 of the scutum is broadly ovate instead of acutely angled ; with but 4 

 usurped setae on scutum (i.e., a total of 8 scutal setae), all marginal, 

 instead of 8 usurped setae, 4 of which are medial. 



Description of larva. — Body: Ovate, about 271 x 200 microns 

 when partially engorged. Eyes double, anterior one the larger. Gna- 

 thosoma: Chelicerae relatively broad, about three and a half times 

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

 setae subpectinate. Palpal claw apparently 3-pronged, but appearing 

 2-pronged. Scutum: Relatively quite broad, about four-fifths as 

 broad as long at maxima (84 x 113 microns). Anterior margin con- 

 cave between ALs. The rounded shoulders of lateral margins occur- 

 ing at anterior two-fifths. Lateral margins posterior to shoulders 

 gently but irregularly sinuate. Caudal margin somewhat convex. With 

 two kinds of punctae, i.e., with coarser punctae about one-half to one- 



^ Two new species subsequently described herein also possess PLs adjacent 

 to ALs. 



