. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Bulletin, So. Calif. Academy of Sciences Vol. 54, Part 3, 1955. PLATE 44 Larva and pupa of Palada scarletina Smith. 1. Larva, lateral aspect, enlarged approximately x 3. 2. Pupa, ventral aspect, and 3, Pupa, lateral aspect x 3/2. Drawing bv Charles Hogue. Imagos were observed in the field on July 16. Aug. 7, Sept. 27, 28, 29 and 30. Of the unparasitized larvae taken prior to Oct. 1, 1954, fifty-two per cent emerged in September of the same year. Of the larvae taken after October 1, none emerge
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Bulletin, So. Calif. Academy of Sciences Vol. 54, Part 3, 1955. PLATE 44 Larva and pupa of Palada scarletina Smith. 1. Larva, lateral aspect, enlarged approximately x 3. 2. Pupa, ventral aspect, and 3, Pupa, lateral aspect x 3/2. Drawing bv Charles Hogue. Imagos were observed in the field on July 16. Aug. 7, Sept. 27, 28, 29 and 30. Of the unparasitized larvae taken prior to Oct. 1, 1954, fifty-two per cent emerged in September of the same year. Of the larvae taken after October 1, none emerged until the following year. In May, 1955 the party headed by Dr. David Hardwick from the Canadian National Museum of Ottawa, Canada, conducted research on Heliothinae in the deserts of southern California. They found Palada scarletina associated with S. runcinata Nutt., which grows along the washes of the Desert Center area of the Mojava-Colorado deserts. Comstock2 has described the fourth instar larva in detail. The pattern is now becoming clear. To understand it, one must first consider in detail the food plants, species of the genus Stephanomeria. These are a group of plants which grow after the spring rains have abated and dried, and the long-day period 152. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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