FACTORS DETERMINING THE COLOUR FORMS OF THE RANUNCULUS LEAF-MINER, PHYTOMYZA RANUNCULI (SCHRANK) (AGROMYZIDAE, DIPTERA)

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  • キツネノボクンハモグリバエの色彩型を決定する要因
  • キツネノボタンハモグリバエの色彩型を決定する要因〔英文〕
  • キツネノボタンハモグリバエ ノ シキサイガタ オ ケッテイスル ヨウイン エイ

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Abstract

Melanic forms of the ranunculus leaf-miner, Phytomyza ranunculi (SCHRANK), exhibit the overwintering generation and the non-melanic ones indicate the following generations. Flies reared at low temperatures develop melanic pigmentation on the entire mesonotum whereas those reared at high temperatures are usually trivittate on the yellow ground colour of the mesonotum. The degree of melanization is determined by low temperature experienced during the pupal period. The host-plant and larval density do not affect the development of melanization, and the photoperiod is also not an influential factor on the pigmentation of the mesonotum.

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