EUSCHONGASTIA FROM BORNEO 
79 
margin of coxa II weakly sclerotized. Sensory setae as follows: Leg I, 3 genualae and a microgenuala ; 
2 tibialae and a microtibiala; a microtarsala (microspur) immediately proximal to a well-developed tarsala 
(spur); subterminala and short parasubterminala, a pretarsala. Leg II: a genuala; 2 tibialae; microtarsala 
anterior and close to tarsala; a pretarsala. Leg III: a genuala and a single tibiala. Middle tarsal claw 
slightly longer than others. 
Standard Measurements in Microns, E. indicella n. sp. 
AW 
PW 
SB 
ASB 
PSB 
A-P 
AL 
AM 
PL 
DS 
PW 
Coxa II 
PW 
ASB 
PW 
A-P 
ASB 
SB-AL* 
Holotype ... 
33 
47 
18 
15 
18 
22 
13 
19 
22 
18 
47/36 
3-1 
2.14 
16/8 
Paratypes (20) Mean 
31 
45 
16 
14 
20 
21 
13 
20 
23 
19 
= 1.30 
1.25 
3.2 
2.14 
2.0 
1.83 
Range ( + or — ) 
2 
4 
3 
3 
3 
2 
2 
2 
3 
3 
0.06 
0.08 
0.23 
0.18 
Type Material. — Holotype and 20 paratypes ex Chiropodomys legatus (a small rat living in internodes 
of bamboo). North Borneo, Mt. Kinabalu, Bundu Tuhan, elev. 5,000 feet, 31. vii. 1951 ( R . Traub ). 
Holotype (U.S.N.M. 21 11) and 3 paratypes in collections of U.S. National Museum. Paratypes in 
collections of British Museum, Rocky Mountain Laboratory, the South Australian Museum, Chicago 
Natural History Museum, other institutions, and the authors’ collections. 
Euschongastia roluis n. sp. (fig. 9-16, p. 80). 
Diagnosis of Larva. — Near lorius (Gunther, 1939) but distinguishable as follows: Leg III 
with a genuala, a tibiala but no sensory setae on tarsus, instead of Leg III possessing only a 
tarsala, and that conspicuous. Further separable in that the eye is reduced to a small single 
structure, instead of being double and on an ocular plate. With palpal claw normal, about 12^ 
in length; not stumpy, only about 7^. Separated from E. indicella n. sp., in that the scutum is 
larger (PW 59 not 48) ; the AM and PL scutal bristles are longer than half the breadth of the 
scutum, not less than half as long, and the dorsal bristles are about 22-26 in number, arranged 
2-6-4...; instead of 32-34 arranged 2-8-6...; PSB subequal to ASB, instead of definitely 
greater. 
Standard Measurement in Microns, E. roluis n. sp. 
AW 
PW 
SB 
ASB 
PSB 
A-P 
AL 
AM 
PL 
DS 
PW 
Coxa II 
PW 
ASB 
PW 
A-P 
ASB 
SB-AL 
Holotype ... 
43 
59 
18 
23 
23 
23 
21 
28 
35 
26 
59/51 
2.56 
2.26 
23/13 
Paratypes (14) Mean 
43 
59 
19 
23 
22 
25 
21 
31 
35 
29 
= 1.16 
1. 13 
2.56 
2.28 
= 1.8 
1.8 
Range ( + or — ) 
4 
4 
2 
2 
2 
2 
2 
3 
4 
3 
0.06 
0.04 
0.04 
0.06 
Description of Larva. — The following description is in comparison with E. indicella. Partially 
engorged larve about 6oox350[x. Eyes reduced 1+1, 5.414 in diameter, midway between AL and PL 
but placed well to the side at a distance from scutum subequal to AP. Gnathosome: Palpal formula 
b/(B)/bbb, but degree of fraying variable, branches usually limited to 2-3 in number. Palpal claw 2-pronged, 
as in indicella. Scutum: Much as in preceding species in shape but larger, and posterior margin sinuate. 
PL and AM scutal setae only slightly shorter than depth of scutum. Bases of AL setae as close to sensillary 
ridge as to anterior margin. Body Setae: Dorsal setae similar to scutal setae but barbs perhaps slightly 
more apparent even though inconspicuous; about 22-26 in number arranged 2.6.4.4.44. (2)-2(o). Ventral 
setae about 12-16, 24^ long, almost nude, plus 8-12 postanals essentially resembling dorsals. 
True ventrals only about 24^ long, scarcely barbed, almost nude. Legs: Agrees with indicella n. sp. in 
that seta on coxa II is nude; those on other coxae with but 2 or 3 short branches. Coxae II and III with 
posterior margins very weakly sclerotized. Sensory setae as in indicella but apparently lacking a 
microtarsala II. 
Type Material. — Occurred with E. indicella on Chiropodomys legatus , Mt. Kinabalu, Bundu Tuhan, 
elev. 4,000 feet, 31. vii. 1951 ( R . Traub). Holotype (U.S.N.M. 2112) and 3 paratypes in U.S. National 
Museum. Eleven Paratypes, ibid., distributed as for preceding species. 
Euschongastia ocellifera n. sp. (fig. 17-24, p. 82). 
Diagnosis of Larva. — Near E. roluis n. sp. but distinguishable in that the eyes are not 
reduced but are of the normal paired type and inserted on an ocular plate; with a 3-pronged 
palpal claw, not 2-pronged; with the AL setae more caudally displaced, at level of the sensillary 
ridge instead of midway between ridge and anterior margin, so that distance from to AL lines 
t In the palpal formula, b indicates a slightly barbed or almost nude seta, as contrasted with B which indicated a typically 
barbed seta; b(N) signifies that the seta may also appear to be nude. 
% SB-AL is distance from SB to AL 
MALA YA, No. 26 , 1953 
