IWAMOTO: NEW HEMEROCOETINE TRICHONOTIDAE FROM THE PHILIPPINES 259 
Table 3. Comparison of counts and measurements of species of Osopsaron and Pteropsaron. 
Data for P. natalensis and P heemstrai from Nelson (1982), with additions to counts of second dor¬ 
sal and anal-fm rays from Smith and Jolinson (2007). Data for other species taken from literature 
{P. evolans, P formosensis, P incisum, and O. verecundum) or specimens examined. 
Genus 
Pteropsaron 
Osopsaron 
Species 
levitoni 
natalensis"^ 
formosensis 
incisum** 
heemstrai 
evolans 
verecundum*** 
No. of specimens 
8 
3 
20 
1 
2 
2 
2? 
SL 
19.8-34.5 
21.4-29.6 
35.9-47.8 
30.5-52.0 
38.3-44.7 
57.4-59.3 
40.6-00? 
%SL 
HL 
33.3-39.6 
32.8-36.0 
27.2-30.8 
34.6-35.0 
32.6-34.0 
31.5-31.5 
32.3 
Head width 
18.4-25.8 
18.9-20.9 
13.3-15.4 
18 
16.4-17.8 
15.3-16.5 
Orbit diam 
10.5-12.7 
10.0-11.4 
8.8-11.3 
11.0-12.4 
10.2-10.3 
9.1-9.6 
9.2 
Snout len 
5.6-6.9 
52-5.6 
4.1-4.9 
9.0-9.2 
7.8-8.5 
8.5-10.1 
8.5 
Postorbital 
17.7-21.5 
17.7-19.3 
16 
15.7-15.9 
15.7-15.9 
Interorb width 
0.9-1.8 
0.5-0.6 
0.5-0.6 
0.7-1.0 
1.5 
1.7-1.9 
Up jaw len 
13.6-18.6 
13.0-13.8 
10.9-12.3 
15.0-15.0 
14.0-15.2 
13.1-13.8 
Body depth 
13.6-15.6 
13.4-15.9 
11.6-13.6 
12.0-17.6 
13.2 
13.1-13.5 
13.9 
Pre-D 
32.6-36.6 
32.5-34.3 
25.9-28.6 
40.0-41.5 
32.5-32.9 
30.3-30.9 
Pre-2D 
48.4-54.4 
47.8-54.2 
41.4-46.8 
53.9 
46.7-47.7 
44.1-44.4 
Pre-A 
40.4-48.5 
38.5-45.8 
33.1-38.2 
50 
45.7-46.6 
42.7-42.8 
C ped depth 
6.4-7.1 
5.9-6.3 
4.6-5.7 
5.0-5.9 
5.2-5.5 
5.2-5.6 
5.4 
Ht ID 
25.8-51.3 
12.0-22.5 
40.2-54.9 
13.4-49.2 
51.4-51.4 
Ht A 
9.5-15.2 
9.6-10.5 
7.1-9.5 
10.7-34.9 
24.4-38.8 
P len 
20.7-24.7 
19.6-21.9 
20 
19.1-20.8 
21.1 
19.2 
Vlen 
19.5-22.4 
18.9-19.6 
27 
15.1-17.0 
17.4-19.2 
23.1 
longest 2D ray 
12.1-13.9 
9.3-12.6 
15.2-22.1 
11.5-25.7 
19.2-50.8 
9.2 
COUNTS 
D 
IV-V+19-20 
IV-V+19-20 
V+20-22 
IV-V+17-19 
VI+21-22 
VI+20 
IV-V+18-19 
A 
24-25 
23-25 
24-27 
22-23 
25 
26 
22-23 
P 
19 
18-19 
18-19 
19 
19 
17-18 
18-19 
Caudal rays 
iii-iv4+4ii 
iv4+4ii 
8 to 9 
ii4+4ii 
Lateral-line scales 
30-32 
32.35 
30-30 
32-33 
35-36 
30-32 
GR lower limb 
9 to 10 
9 to 10 
10 to 12 
9 to 10 
10 to 11 
12 
* Smith & Johnson (2007:374) recorded three other specimens, one Somali specimen had 18 D rays and 22 A rays, 
otherwise counts were similar (no measurements given). 
** Data from Gilbert (1905:647) and CAS 120166 (30.6 mm SL) 
*** Data from original description and Okamura in Masuda et al (1984:290) 
