Jump to Main Content
Phytophagous insect faunas of Baccharis salicina, B. pteronioides, and B. bigelovii (Asteraceae) in the southwestern United States and northern Mexico
- Boldt, P.E., Robbins, T.O.
- Environmental entomology 1994 v.23 no.1 pp. 47-57
- Baccharis, geographical distribution, insects, surveys, weed control, biological control agents, Southwestern United States, Mexico
- Phytophagous insect faunas of Baccharis salicina Torr. & Gray, B. pteronioides DC, and B. bigelovii Gray were studied in the southwestern United States and northern Mexico. Phytophagous insects representing 61 species, 31 families, and seven orders were collected on B. salicina. About 43% of these species were polyphagous; 13% were oligophagous, apparently restricted to the family Asteraceae; and 15% were monophagous, apparently restricted to the genus Baccharis. Sixteen percent of the insects collected were economically important pests. Phytophagous insects representing 55 species, 26 families, and seven orders fed on B. pteronioides. About 25% of the species were polyphagous, 13% were oligophagous, and 2% were monophagous. Phytophagous insects of 32 species, 22 families, and seven orders fed on B. bigelovii. About 28% were polyphagous, 16% were oligophagous, and 13% were monophagous. Months of the year that immature and adult insects were present on the host plant, relative frequency, and associated plant parts are reported.