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1962
Journal of the Lepidopterists* Society
61
LARVAL NOTES ON CHLOSYNE LACINIA AND C. CALIFORNICA
On 3 Sept. 1961 a few larvae of Chlosyne lacinia Geyer were found among a larval colony of Chlosyne californica Wright, apparently at home in this communal association. The few orange caterpillars of lacinia were conspicuous among the dark californica larvae.
At the time, colonies of C. californica in various instars were plentiful on Desert Sunflower, Viguiera deltoidea var. parishii in Sentenac Canyon on Highway 78, ten miles northeast of Julian, San Diego County, California. However, these few lacinia caterpillars were found only in one gregarious assemblage of perhaps a hundred fourth instar californica larvae. The butterflies were reared out by William Hedges; hence identification is confirmed.
Chlosyne lacinia is not common in San Diego County although conditions appear quite favorable for it in Borrego Valley. Normally the caterpillars prefer Helianthus annuus, and can be found in large quantities in the fall in Imperial Valley on roadside patches of sunflowers. This record on Viguiera deltoidea probably represents a new host plant record.
Chlosyne californica on the other hand is one of the dominant species of the desert canyons of this area whenever rainfall is favorable, and the butterflies appear in large numbers at times. The caterpillars accommodate readily to Helianthus annuus in captivity but I have never observed them on anything but Desert Sunflower in nature.
Fred Thorne, 1360 Merritt Dr., El Cajon, Calif., U. S. A.
TWO NEW FOODPLANTS OF SOUTHWESTERN SATURNIID^
The hosts of Agapema galhina anona Ottol. and atheroma splendens Druce were discovered September 1 and 2, 1961, in Brown's Canyon of the Baboquivari Mountains of Pima Co., Arizona. While making a detailed search for Rothschildia jorulla cinctus Tepper, I quite accidentally came upon a cluster of cocoons of A. galhina anona. The host is a species of Lycium, which is a very thorny, sparsely-leaved shrub. Previously 1 had spent considerable time trying to locate the moth in its known areas of occurence in the Santa Rita and Santa Catalina mountains without success. Once the precise foodplant was determined I was able to find the cocoons in considerable numbers.