- Page 3 and 4: Table of Contents3 Table of Content
- Page 7 and 8: Color plates of male bumble bees ar
- Page 9 and 10: Life CycleBumble bees are considere
- Page 11 and 12: Bumble Bee Hind Leg Diagramcoxafemu
- Page 13 and 14: Map MethodologyThe maps produced fo
- Page 15 and 16: Phenology MethodologyThe annual col
- Page 17 and 18: Measuring the Cheek (Malar) Length
- Page 20: Bombus nevadensis continued20 Bumbl
- Page 23 and 24: Bombus balteatus continuedLateral i
- Page 26 and 27: Bombus caliginosusObscure bumble be
- Page 28 and 29: Bombus caliginosus continued28 Bumb
- Page 30 and 31: Bombus vandykeivan Dyke bumble bee
- Page 34 and 35: Bombus centralisCentral bumble bee
- Page 36 and 37: Bombus centralis continued36 Bumble
- Page 38 and 39: Bombus sitkensisSitka bumble bee•
- Page 40 and 41: Bombus sitkensis continued40 Bumble
- Page 42 and 43: Bombus flavifronsYellow head bumble
- Page 44 and 45: Bombus flavifrons continued44 Bumbl
- Page 46 and 47: Bombus frigidusFrigid bumble bee•
- Page 48 and 49: Bombus frigidus continued48 Bumble
- Page 50: Bombus vagansHalf-black bumble bee
- Page 53 and 54: Bombus vagans continuedFemales (que
- Page 55 and 56: Bombus ternarius continuedLateral i
- Page 57 and 58: Bombus ternarius continuedFemales (
- Page 59 and 60: Bombus mixtus continuedLateral imag
- Page 62 and 63: Bombus melanopygusBlack tail bumble
- Page 64: Bombus melanopygus continued64 Bumb
- Page 69 and 70: Bombus huntii continuedFemales (que
- Page 71 and 72: Bombus sylvicola continuedLateral i
- Page 73 and 74: Bombus sylvicola continuedFemales (
- Page 75 and 76: Bombus vosnesenskii continuedLatera
- Page 77 and 78: Bombus vosnesenskii continuedFemale
- Page 79 and 80: Bombus bifarius continuedLateral im
- Page 81 and 82: Bombus bifarius continuedFemales (q
- Page 83 and 84:
Short-cheeked bees with arounded an
- Page 85 and 86:
Bombus crotchii continuedFemales (q
- Page 87 and 88:
Bombus rufocinctus continuedLateral
- Page 89 and 90:
Bombus rufocinctus continuedFemales
- Page 91:
Bombus griseocollis continuedLatera
- Page 94 and 95:
Bombus morrisoniMorrison bumble bee
- Page 97 and 98:
Bombus morrisoni continuedFemales (
- Page 99 and 100:
Bombus franklini continuedLateral i
- Page 101 and 102:
Bombus franklini continuedFemales (
- Page 103 and 104:
Bombus occidentalis continuedLatera
- Page 105 and 106:
Bombus occidentalis continuedFemale
- Page 107 and 108:
Bombus terricola continuedLateral i
- Page 109 and 110:
Bombus terricola continuedFemales (
- Page 111 and 112:
Long-cheeked bees with asharp angle
- Page 113 and 114:
Bombus appositus continuedFemales (
- Page 115 and 116:
Bombus californicus continuedLatera
- Page 117 and 118:
Bombus californicus continuedFemale
- Page 119 and 120:
Bombus fervidus continuedLateral im
- Page 121 and 122:
Bombus fervidus continuedFemales (q
- Page 123 and 124:
Bombus pensylvanicus subsp. sonorus
- Page 125 and 126:
Bombus pensylvanicus subsp. sonorus
- Page 127 and 128:
Bees with hind leg outer tibial sur
- Page 129 and 130:
Bombus insularis continuedFemales (
- Page 131 and 132:
Bombus fernaldae continuedLateral i
- Page 133 and 134:
Bombus fernaldae continuedFemales (
- Page 135 and 136:
Bombus suckleyi continuedLateral im
- Page 137 and 138:
Bombus suckleyi continuedFemales (n
- Page 139 and 140:
- Cheek length equal to width; face
- Page 141 and 142:
- Face with black hairs, sometimes
- Page 143 and 144:
Web and Other ResourcesFor addition