Explanation of Names
Latin: angulus- "angle, corner" + collis- "neck"
Author of species: (LeConte) 1857
(1)Identification
Dark brown to black, sculptures on upper side, irridescent bronze luster, especially on underside. Fly noisily when alarmed. This is the only western species in the genus.
Range
Southernmost Alaska, British Columbia, Idaho, South Dakota, south to California and Texas.
USA: AZ, CA, CO, ID, NE, NM, OR, SD, TX, WA, WY
(1)Food
Adults feed on leaves.
Larvae: Abies concolor, A. grandis, Pinus ponderosa, Pseudotsuga menziesii
(1)Life Cycle
Eggs are laid on bark of large branches or trunks of conifers, especially fir (Abies), or western yellow pine (Ponderosa Pine, Pinus ponderosa). Larvae hatch and cut through to inner bark, where they form tunnels.
Remarks
Type locality: CA, Sacramento
(1)Print References
Milne, p. 563, fig. 179
(2)
Arnett et al., p. 193--description
(3)
Papp, p. 115, fig. 365
(4)
Swan and Papp, p. 390, fig. 746
(5)
White, p. 167--description
(6)
