50 
TRAUB & AUDY 
and Phang Ang-Wah). (A number of topotypes were collected in 1952. A single specimen (C.O.R.U. 
17014), not included in the type series, came from Echinosorex gymnurus, moon-rat (Erinaceidae), Tinjar, 
Sarawak, 15. v. 1950 ( Tom Harrisson and Ben Ensoll). Paratypes distributed as for T. flagellifera n. sp. 
Remarks. — T. (L.) pipellae is also near T. (L). fulleri Ewing, 1945 * n general configuration 
and in the subpectinate character of the typical ventral seta and regarding the long dorsal setae 
with appressed or short barbs (fig. 42, T. fulleri). In T. fulleri , however, the scutum (fig. 43) 
is very definitely biconvex caudally, and the sensillary bases are in a line with PL bases ; while 
the PLs are only about twice the scutal depth or less. The caudal or postanal ventral setae 
(fig. 44) are more pectinate than in the new species. 
The name pipellae , suggesting the letters PL, is a mnemonic for this species with remark- 
ably long posterolateral setae. 
Trombicula (Leptotrombidium) pilalta n. sp. (figs. 54-61, pp. 64, 65). 
Diagnosis of Larva. — A species characterized by the following : a broad but relatively 
shallow scutum (PW over 92, SD = 55-55 n) ; posterior margin of scutum arcuate ; sensillae 
with proximal half nude, distal half frayed ; posterolateral setae (PLs) fairly long (77^) ; AM 
seta very long (over 80 p.) ; with about 42 dorsal setae with anterior rows arranged 2- 10- 10 ; 
palpal claw bifurcate. Close to T. (L). pipellae n. sp., T. (L) akamushi (Brumpt, 1910) 
and T. (L.) longiseta Womersley, 1952, but separable as shown in following table (measurements 
are means , expressed in microns) : 
Character 
AM 
PL 
Palpal Claw, prongs ... 
PW 
Ratio : PW/SD 
Ratio : PW/Coxa-II 
Posterior Margin of Scutum... 
No. of Dorsal Setae ... 
Typical Rows of Dorsal Setae 
pilalta 
pipellae 
87 ... 
89 
77 ••• 
126 
2 ... 
2 
95 ... 
93 
1.9 ... 
i-7 
1.37 ... 
1. 15 
Arcuate . . . 
Slightly 
sinuate 
38-42 
28 
2. 10. 10 ... 
2.8.6. 
akamushi 
longiseta 
58 ... 
57 
60 ... 
109 
3 ... 
2 
78 ... 
73 
1.9 ... 
1-7 
1.45 ... 
— 
Slightly . . . 
arcuate 
Sinuate 
32-40 ... 
28 
2.10.8 ... 
2.8.8. 6 
Description of Larva. — Body: About 490x305^ in fairly engorged holotype. Eyes 2+2 on ocular 
plate. Gnathosome: Chelicers rather strongly curved with a minute subapical denticle or incision on 
mesal margin, somewhat proximal to usual lateral notch near apex. Palpal formula N/N/BNN. Palpal 
claw 2 pronged. Galeal seta B. Scutum : Subrectangular, almost twice as broad as long, anterior margin 
slightly sinuate; lateral margins shallowly concave, almost straight; posterior margin arcuate or rounded 
in the main, but flattened near insertion of PLs. Scutal setae with many even, fairly short barbs. 
PLs about 1 1 times scutal depth; AM about ii times. Sensillae about 98 fx long, proximally nude, 
frayed or delicately branched beyond midpoint. Sensillary bases at about level of PLs. Body Setae: 
About 38/42 (usually over 40) dorsal setae arranged 2. 10. 10. 10. (8)... the rest irregular, with thin rather 
short barbs. True ventrals ca. 45U subpectinate, 20 in number, plus 10-12 caudal setae, postanal, 6 o[i, 
resembling DS. Legs: Sensory setae as in T. (L.) baluensis n. sp. and c ‘ akamushi group”. 
Standard Measurements in Microns, T. pilalta n. sp. 
AW 
PW 
SB 
ASB 
PSB 
A-P 
AL 
AM 
PL 
DS 
PW 
Cox li 
PW 
SD 
PW 
ASB 
PW 
A-P 
Holotype ... 
85 
97 
38 
36 
15 
33 
52 
84 
74 
64 
97/71 
= 1.37 
97/51 
= 1.9 
97/36 
= 2.7 
97/33 
= 2.9 
Paratypes ( 20 ) Mean 
84 
97 
39 
38 
IS 
33 
54 
87 
76 
65 
1-35 
1.8 
2-53 
2.9 
Range (+ or — ) ... 
5 
5 
2 
3 
I 
2 
4 
6 
4 
S 
0.06 
0.1 
0.18 
0.05 
Type Material. — Holotype and 19 paratypes ex Rattus rattus baluensis , Mt. Kinabalu, Kamborangah, 
elev. 7800 ft., 6. v. 1952 (J. R. Audy). Ten other paratypes as follows: 9 Tupaia montana tree shrew, 
and 1 ex Dendrogale, a tree shrew, ibid , but 26. vii. 1951. ( R . Traub ). Holotype (U.S.N.M. 2016) 
deposited in U.S. National Museum, paratypes distributed as for T. flagellifera n. sp. 
STUD. INST. MED. RES. 
