﻿THE ENTOMOLOGICAL MAGAZIN に Vol. III. Pt. に 



öl 



雜 錄 



SOME NOTES ON BUTTERFLIES FROM HOKKAIDO 



BY SATORU KUWAYAMA, F.E S. JAP. 

 . 北海道 產數種 蝶 類 に 就 て 



桑 山 覺 大 B イミ 見 蟲學會 



1. Parnassius stubb ender in Men. 



About ten years ago, the yellow variety of this species 一 citrinarluS 

 Mötsch. 一 was very common at :Dapporo, but now it became very rare. 

 As it nies very slowly over the meadow and can easily be captured, it 

 became now nearly exterminated and is quite impossible to catch it near 

 Sapporo, while the original species of this insect is not rare now in the 

 mountain region of Sapporo, which was not common before. In Sa^ha- 

 lien the original species is said to be common from July to August. In 

 the neighbourhood of Sapporo it appears from June to July. 



2. Aporia crataegi L. 



oince 1867 Aporia crataegi was known from Japan, when the late 

 Baron Yosmo Tanaka has exhibited this butterfly in the Grand Ex- 

 hibition of Paris of the same year. On the other band it is proposed 

 that this insect imported from Europe into Japan with the shoot of the 

 apple tree, perhaps in the beginning of the Mdji, about fifty years ago. 

 Any how this insect was very abundant somewhat ten years before in 

 the neighbourhood of Sapporo, flying slowly near the orchard in the 

 months of June to July. It became now quite rare owing to the constant 

 effort of the orchard ists in spraying the kerosene emulsion or othtr in- 

 secticides. It can only be captured now near the mountain r"、i い ns as 

 Hassabu, Hattarebetsu, Ishiyama and Osaniunai of the Province Ishi- 

 kari, where feeding itself with Crataegus chlorosarca or Malus com- 



munis. It has tendency to externiinalc here at Sapporo as in Kurope. 



