Frable et al: A new species of Sebastes 
361 
Table 1 
Variable loadings and percent variance explained for the first 4 principal component axes of a principal component analysis 
for morphometric measurements of all specimens examined for this study, Sebastes mystinus (blue rockfish; n=68) and S. 
diaconus (deacon rockfish; n= 52) combined, and of specimens over 150 mm SL, S. mystinus (n= 37) and S. diaconus (n= 36) 
combined. Highest loadings are indicated in bold. 
All specimens Specimens over 150 mm SL 
Measurement 
Axis 1 
Axis 2 
Axis 3 
Axis 4 
Axis 1 
Axis 2 
Axis 3 
Axis 4 
Percent variance explained 
17.113 
12.066 
11.313 
9.813 
23.055 
13.443 
11.373 
9.362 
Head length 
0.061 
0.017 
-0.031 
0.126 
0.110 
-0.003 
-0.007 
0.165 
Orbit length 
0.094 
0.046 
-0.003 
0.106 
0.115 
0.003 
-0.081 
0.153 
Snout length 
0.036 
-0.027 
0.123 
-0.370 
-0.041 
0.040 
0.249 
-0.347 
Interorbital width 
-0.081 
-0.023 
-0.072 
-0.010 
-0.107 
0.001 
-0.040 
0.029 
Suborbital depth 
-0.194 
-0.586 
0.564 
-0.285 
-0.181 
0.061 
-0.531 
-0.700 
Head depth 
-0.086 
-0.049 
-0.207 
0.162 
-0.140 
-0.133 
-0.214 
0.174 
Upper jaw length 
0.010 
-0.024 
-0.019 
-0.018 
-0.026 
-0.008 
0.084 
0.027 
Lower jaw length 
0.098 
0.018 
0.019 
0.083 
0.132 
-0.021 
-0.002 
0.011 
First gill arch length 
-0.017 
0.033 
-0.072 
0.359 
0.051 
0.031 
-0.313 
0.392 
Symphyseal knob length 
0.818 
-0.273 
-0.267 
-0.242 
0.637 
-0.625 
0.099 
-0.193 
Predorsal fin length 
0.040 
0.000 
0.026 
-0.031 
0.035 
-0.017 
0.036 
0.001 
Prepelvic fin length 
0.009 
-0.097 
0.000 
0.119 
0.023 
-0.067 
-0.136 
0.057 
Preanal fin length 
-0.035 
-0.056 
-0.034 
0.105 
-0.019 
-0.045 
-0.068 
0.112 
Depth at dorsal fin origin 
-0.114 
-0.051 
-0.065 
0.129 
-0.101 
-0.021 
-0.074 
0.091 
Depth at pelvic fin origin 
-0.094 
-0.049 
-0.084 
0.179 
-0.078 
-0.039 
-0.118 
0.137 
Depth at anal fin origin 
-0.049 
-0.053 
-0.114 
0.096 
-0.051 
-0.060 
-0.017 
0.043 
Dorsal-fin spine I length 
0.073 
0.160 
0.038 
-0.144 
0.009 
0.130 
0.115 
0.074 
Dorsal-fin spine IV length 
0.083 
0.066 
-0.006 
0.048 
0.099 
0.074 
0.082 
0.072 
Spinous dorsal-fin base length 
-0.044 
-0.136 
-0.072 
0.175 
-0.036 
-0.059 
-0.144 
0.147 
Soft rayed dorsal-fin base length 
-0.084 
0.011 
-0.056 
-0.044 
-0.078 
-0.109 
-0.033 
-0.017 
Pectoral-fin base depth 
-0.125 
-0.067 
-0.052 
0.001 
-0.138 
-0.020 
0.084 
-0.028 
Pectoral fin length 
-0.100 
-0.088 
-0.020 
-0.020 
-0.116 
-0.040 
0.049 
0.012 
Pelvic-fin ray length 
-0.109 
0.030 
-0.015 
-0.109 
-0.144 
0.007 
0.115 
-0.027 
Pelvic-fin spine length 
-0.058 
0.136 
0.145 
-0.032 
-0.040 
0.149 
0.144 
0.074 
Anal-fin base length 
0.005 
0.030 
-0.015 
0.034 
0.028 
0.045 
0.060 
-0.010 
Anal-fin spine I length 
0.273 
0.450 
0.574 
0.152 
0.477 
0.628 
-0.016 
-0.044 
Anal-fin spine II length 
0.147 
0.146 
0.193 
0.203 
0.251 
0.237 
-0.049 
-0.066 
Anal-fin spine III length 
0.085 
0.109 
0.222 
0.033 
0.083 
0.202 
0.125 
-0.062 
Dorsal fin origin to anal fin origin 
-0.066 
-0.051 
-0.044 
0.108 
-0.058 
0.002 
-0.060 
0.122 
Caudal peduncle depth 
-0.093 
0.003 
-0.063 
0.007 
-0.125 
-0.009 
0.035 
-0.021 
Caudal peduncle dorsal length 
-0.173 
0.444 
-0.222 
-0.479 
-0.180 
-0.066 
0.531 
-0.072 
Caudal peduncle ventral length 
-0.132 
0.189 
-0.096 
-0.270 
-0.200 
0.115 
0.221 
-0.016 
Sebastes diaconus, new species 
Proposed English common name: deacon rockfish 
Figures 1, A and C, 2-6, 7A, 8A, 9, and 10; Tables 1-3. 
Sebastichthys mystinus Jordan and Gilbert, 1881: Bean, 
1882:26 (presence in Puget Sound, Washington]; 
Goode, 1884:266 (in part, mention of fishes from 
Vancouver Island, Canada, and Puget Sound; hav- 
ing affinity with Sebastes melanops in Puget Sound). 
Sebastodes mystinus (Jordan and Gilbert, 1881): White- 
aves, 1887:135 (first record of capture in Canada); 
Jordan and Evermann, 1898:1785 (in part, presence 
in Puget Sound); Phillips, 1957:52-53 (in part); Cle- 
mens and Wilby, 1961:252-253. 
Sebastes mystinus (Jordan and Gilbert, 1881): Hart, 
1973:429; Eschmeyer and Herald, 1983:144 (in part); 
Kramer and O’Connell, 1995:45 (in part); Mecklen- 
burg et al., 2002:360; Love et ah, 2002:215 (in part); 
Love, 2011:250-251 (in part). 
Holotype 
OS 18901, 260 mm SL, 1.8 km west of Seal Rock, OR, 
44°29'49.38"N, 124°6'30.48"W, 20.9 m depth, 20 April 
2012, D. W. Wagman and T. N. Frierson. 
Paratypes 
CAS 25336, 1, 153 mm SL, off Point Diablo, San Fran- 
cisco, CA, 2 August 1947, W. I. Follett, C. O. Garrels, 
and C. F. Maertins; LACM 31942.008, 6, 240-266 mm 
SL, northeast of Redding Rock, Humboldt County, CA, 
