THE INFLUENCE OF SEX RATIO ON FEMALE DISPERSAL IN DANAUS PLEXIPPUS (L.) (LEPIDOPTERA: DANAIDAE)

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A capture-recapture experiment on wanderer butterflies was conducted during summer, 1984 at 4 milkweed patches where nectar resources were abundant. The recapture rate was higher in males than in females in all the patches, indicating dispersal by females. Dispersal of females was facilitated by removing males in the study areas. Spermatophore counts showed that females mated up to 10 times. These results suggest that nutrients transferred from males during copulation are important resources for females.     

中国爻蛱蝶属与耳蛱蝶属(鳞翅目,蛱蝶科)分类地位探讨

通过对耳蛱蝶Eulaceura osteria与爻蛱蝶Herona marathus的成虫形态特征、雌雄外生殖器解剖特征、地理分布的比较研究,并结合闪蛱蝶亚科系统发育分析结果,表明耳蛱蝶与爻蛱蝶成虫外部形态特征及雌雄外生殖器解剖特征存在许多相同之处,地理分布相互重叠;系统发育分析结果该2种并入同一支系,互为姊妹群关系;建议将耳蛱蝶归入爻蛱蝶属中,同时将耳蛱蝶属作为爻蛱蝶属的异名处理。     

NEW RECORDS OF LEPIDOPTERA IN AUSTRALIA

Hypochrysops hippuris Hewitson and Toxidia inornata inornata Butler were taken in Australia for the first time in 1961. Common (1964) has briefly mentioned these records.     

PHENOTYPIC CORRELATION STRUCTURE AMONG ELEMENTS OF THE COLOR PATTERN IN PRECIS COENIA (LEPIDOPTERA: NYMPHALIDAE)

The component parts of butterfly wing patterns are arranged in sets of serially homologous pattern elements, repeated from wing cell to wing cell. Measurements were made on the sizes and positions of these elements on two successive, independent, sets of specimens in order to elucidate the phenotypic correlation structure among pattern elements. That portion of the correlation between measures due to overall size variation was accounted for through two alternate methods: multiple regression on two vein length measures, which represent wing size, and a Wright-style factor analysis. The sizes of pattern elements belonging to a homologous series were found to be significantly correlated whereas those of non-homologous elements varied independently. The degree of correlation among homologs varied, and, in the case of eyespot sizes, appeared to be inversely related to the degree of their morphological divergence. Although not correlated in size, the positions of non-homologous elements that lie within the same wing cell are moderately correlated. The results support current developmental models for the ontogeny of butterfly color pattern.