USDA Forest Service:
1912. Cones infested by cone moth (Laspeyresia torteuta). Bray, California.
USDA Forest Service:
1914. The type of cigar box cage used for rearing cone and seed insect cage. Jeffrey pine. Cones collected August 19, 1913.
USDA Forest Service:
1914. Type of muslin sack cage placed in field at phenological stations to obtain period of emergence of cone insects at different elevations. The infested cones were placed in the sack. Ashland, Oregon.
USDA Forest Service:
1914. Type of outside screened rearing and observation cage used in the study of cone moths.. Bureau of Entomology, Forest Insect Investigations Field Station. Ashland, Oregon.
USDA Forest Service:
1914. Type of ventilated cage used to observe oviposition of seed chalcids. Megastigmus spp. Bureau of Entomology, Forest Insect Investigations Field Station. Ashland, Oregon.
USDA Forest Service:
1914. Screened and ventilated cage used to observe ovipositing and mating of Megastigmus spp. Bureau of Entomology, Forest Insect Investigations Field Station. Ashland, Oregon.
USDA Forest Service:
1914. Dioryctria abietella. Larvae, cocoons, and pupae.
USDA Forest Service:
1914. Cone insect Lonchaea veridana larvae, puparia, adult. Ashland, Oregon.
USDA Forest Service:
1914. Hymenoptera. Callimomidae. Megastigmus pinus. Pupae and adults. Ashland, Oregon.
USDA Forest Service:
1914. Cones from which adult moths have emerged. Barbara colfaxiana. Ashland, Oregon.
USDA Forest Service:
1915. Individual cell rearing cages showing arrangement of trays. Used to obtain development records of larvae of Megasitigmus spp. Ashland, Oregon.
USDA Forest Service:
1915. Larvae and pupae of Megasitigmus pinus in breeding cells. Ashland, Oregon.
USDA Forest Service:
1915. Adult Megastigmus spermatrophus ovipositing in Douglas-fir cone. Ashland, Oregon.
USDA Forest Service:
c.1915. In F.P. Keen's Cone and Seed Insects of Western Forest Trees (USDA Technical Bulletin 1169), this image is Figure 52 on page 149. The caption reads, "Adults of the fir coneworm Dioryctria abietella."
USDA Forest Service:
1915. Type of muslin sack cage placed in field at phenological stations to obtain period of emergence of cone insects at different elevations. The infested cones were placed in the sack. Adults after emerging were collected in lantern globe. Ashland, OR.
USDA Forest Service:
1915. Drying cones for study of cone and seed insects. Infested cones are spread on canvas placed in sunlight to dry them of excessive moisture to prevent mold when placed in rearing cages. Ashland, Oregon.
USDA Forest Service:
1916. Knobcone pine (Pinus attenuata) 1916 cone crop. Monumental Pass, Oregon.
USDA Forest Service:
1916. Hymenotera. Callimomidae. Megastigmus albifrons. Pinus ponderosa. Hymenoptera development. Ashland, Oregon.
USDA Forest Service:
1916. Megastigmus albifrons adult ovipositing eggs in cone. Ashland, Oregon.
USDA Forest Service:
1916. Larval work of small Tineid moth in pollen bodies of ponderosa pine. Ashland, Oregon.
USDA Forest Service:
1916. Adult of Megastigmus pinus ovipositing in young white fir cone. Ashland, Oregon.
USDA Forest Service:
c.1916. Chrysophana placida (flatheaded cone borer) larva in Knobcone pine cone. Fig. 154 on page 260 in Furniss and Carolin. 1977. Western Forest Insects.
USDA Forest Service:
1916. Ptinidae larvae. Pinus jeffreyi cone.
USDA Forest Service:
c.1916. Transformation of large cone maggot from larvae to adult.
USDA Forest Service:
1916. Curculionidae. Balaninus sp. Larvae in Quercus californica acorns.
USDA Forest Service:
1916. Thysanocnemis larva in Fraxinus sp. seed pods.
USDA Forest Service:
1916. Cone and seed insect cages. Ashland, Oregon.
USDA Forest Service:
1916. One type of cages used to obtain emergence records of cone insects.
USDA Forest Service:
1917. Hymenoptera. Ichneumonidae. Glypta sp. Seed insects.
USDA Forest Service:
c.1957. Unidentified larva in a sectioned cone.
