86 
TRAUB & AUDY 
Standard Measurement in Microns, E. asonluca n. sp. 
AW 
PW 
SB 
ASB 
PSB 
A-P 
AL AM 
PL 
D.Sf 
PW 
Coxa II 
PW 
ASB 
PW 
A-P 
PSB 
SB-PL 
Holotype ... 
50 
67 
33 
26 
23 
32 
23 — 
16 
23,47 
67/56 
2.57 
2.1 
23/12 
Paratypes (5) Mean 
5i 
68 
31 
25 
23 
33 
25 — 
16 
21,50 
= 1.20 
68/57 
2.72 
2.06 
= 1-9 
2.1 
Range (-for — ) 
2 
3 
2 
2 
2 
2 
3 — 
3 
4-5 
0.05 
0.2 
0.8 
0.25 
t Second seta in first row usually twice as long as others. 
Type Material. — Holotype and 6 paratypes ex Tupaia tana , Sarawak, Kuching, fifth mile, Stapok 
Road Forest Reserve, coll, jointly with Sarawak Museum, 4. ix. 1951. ( Tom Harrisson and M. Nad- 
chatram). Holotype (U.S.N.M. 2116) and one paratype in U.S. National Museum, remaining paratypes 
in collections of British Museum, South Australian Museum, and author’s collections. 
Remarks . — A large number of specimens have been provisionally identified as this species 
in material from Sarawak, North Borneo, and Malaya. A further series of a very closely 
similar form but with subequal dorsal setae has also been set aside for further study. 
Comparative Measurements and Data of six Species of Borneo Chiggers 
of the Genus Euschongastia. 
indicella 
roluis 
ocellifera 
daria 
calunosa 
asonluca 
Species 
n. sp. 
n. sp. 
n. sp. 
n. sp. 
n. sp. 
n. sp. 
AW (mean) ... 
31 
43 
44 
5i 
71 
5i 
(range) 
2 
4 
1 
3 
6 
2 
PW 
45 
59 
56 
70 
100 
68 
4 
4 
2 
5 
6 
3 
SB 
16 
19 
21 
27 
43 
3i 
3 
2 
1 
3 
3 
2 
ASB 
14 
23 
21 
23 
33 
25 
3 
2 
2 
3 
2 
2 
PSB 
20 
22 
21 
24 
28 
23 
3 
2 
2 
2 
2 
2 
A-P 
21 
25 
21 
26 
42 
33 
2 
2 
2 
3 
3 
2 
AL 
13 
21 
16 
22 
42 
25 
2 
2 
1 
2 
4 
3 
AM 
20 
31 
28 
34 
49 
— 
2 
3 
2 
4 
5 
— 
PL 
23 
35 
32 
38 
30 
16 
3 
4 
3 
5 
3 
3 
DS 
19 
29 
32 
37 
58 
21&50 
3 
3 
3 
4 
5 
4- 5 
PW/Coxall... 
1.25 ... 
1. 13 ... 
1.22 ... 
1-37 
1.42 ... 
1. 18 
0.06 
0.06 
0.04 
0.06 
0.05 
0.05 
PW/ASB 
3.2 
2.56 ... 
2.7 ... 
3.00 
3.0 ... 
2.72 
0.08 
0.04 
0.05 
0.07 
0.15 
0.2 
PW/A-P 
0.14 ... 
2.28 ... 
1.3 ... 
2.54 
2.31 ... 
2.06 
0.23 
0.04 
0.04 
0.08 
0.08 
0.8 
ASB/SB-AL* 
1.83 ... 
1.8 
2.3 ... 
1.6 
1. 13 ... 
1.24 
0.18 
0.06 
0.02 
O.IO 
0.07 
0.17 
PSB/SB-PLt 
1.34 ••• 
2.13 ... 
2.08 ... 
2-77 
3-3 ••• 
2.1 
0.20 
0.49 
0.25 
0.21 
0.8 
0.25 
PW/SD 
1.42 ... 
1.34 ... 
1.33 ... 
1.46 
1.56 ... 
1.39 
0.08 
0.06 
0.04 
0.19 
0.16 
0.05 
Eyes 
single 
single 
double 
double 
double 
double 
Palpal formula % 
b(N)/b/bbb 
b(B)/b/bbb 
b/b/bbb 
B/b/Nb 
N/b(3- 4 )/bbb 
N/N/NNb 
Dorsal setal rows . . . 
2-8-6 
2-6-4 
2-6-6 
2-6-6... 
... 2-6-4 
2-6-6 
Mastitarsala III 
0 
0 
0 
+ 
0 
0 
* SB-AL is distance from SB to AL, measured from SB to imaginary line connecting ALs. 
+ SB-PL — as above, but for PL. 
J b indicates a slightly barbed or frayed or virtually nude seta, as contrasted with B whi ch indicates a typically barbed seta. 
STUD. INST. MED. RES. 
