List of Entomological Publications (Autobibliographie)
Ulrich PAUKSTADT & Laela Hayati PAUKSTADT
Paukstadt, U. & Paukstadt, L. H. (1990): Zur Verbreitung von Attacus caesar Maassen 1873 auf Luzon, Philippinen, und Anmerkungen über die Farbvariationen dieser und einiger verwandter Arten (Lepidoptera: Saturniidae). - Entomologische Zeitschrift (Essen), 100 (8): pp. 149-150.
Summary: The distribution of Attacus caesar Maassen, 1873 (Lepidoptera: Saturniidae) on the island of Luzon, Philippines is discussed.
The number of fife female specimens of A. caesar was received from a Philippine dealer in 1987, all bearing the data: "Philippine, Luzon Island, Isabela, April 1987" and: "Attacus atlas" (error in determination by the supplier probably caused since all specimens bear an uniform brownish orange coloration with 1st accessory fenestra present and 2nd accessory fenestra absent). We assume that A. caesar actually occurs on Luzon Island as an established population and is sympatric with the more common A. lorquinii C. & R. Felder, 1861. A. caesar from Luzon (always?) shows the coloration which is typical for A. atlas (Linnaeus, 1758) from Taiwan, while A. atlas from southern populations such as Thailand, Peninsular Malaysia and Sumatra often have a much darker ground coloration. Occasionally specimens of A. caesar are available from Bohol Island, Philippines, which bear the same orange ground coloration instead of the usual olive green known for A. caesar from Mindanao Island, Philippines. In 1989 we received 120 wild collected cocoons of A. caesar from Bohol and only one female specimen presented the orange ground color, while all other were olive green colored. Experiments stating that this color polymorphism is due to particular weather (e. g. temperature, humidity) influences which the pre-imaginal instars encountered, similar experiments which were carried out and stated this for Rothschildia lebeau (Guérin-Méneville, 1868) by Janzen (1984), are still lacking for the genus Attacus Linnaeus, 1767.