| 1. | "Ligdia adustata " has two generations per year ( bivoltine species ).
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| 2. | However, they are unlikely to be bivoltine ( producing two broods in one season ).
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| 3. | The second type is called bivoltine and is normally found in China, Japan, and Korea.
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| 4. | An environmental switch mechanism controls seasonal dimorphism observed in bivoltine species, or species having two broods per year.
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| 5. | It is probably at least partly bivoltine since adults have been found on wing in late summer and late autumn.
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| 6. | The imago ( moth ) is bivoltine ( depending on geographic location ) flying in May and June and again in August.
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| 7. | In Britain it is believed to be ( partly ) univoltine, but in the Netherlands and Sweden it is clearly bivoltine.
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| 8. | The bee species " Perdita portalis " is bivoltine, and is estimated to have about 2 or 3 broods annually.
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| 9. | The subspecies " Emesaya b . brevipennis " is the most widely distributed and is reported to be bivoltine in Southern Illinois.
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| 10. | The major groups of silkworms fall under the univoltine ('uni-' = one,'voltine'= brood frequency ) and bivoltine categories.
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