244 • ^^6 Philippine Journal of Science 1917 



Matsumura -* records the life history of this species and gives 

 figures of the imago and larva. 

 He says that in Hokkaido — 



It is single-brooded and hibernates in the larval stage. It attains full 

 growth from May to the beginning of June and the imago emerges four or 

 five vi^eeks afterwards. It is extremely abundant both in the larval and 

 imaginal stages at Sapporo, Hokkaido. 



Imago. — ^"In Asia caja is considerably larger than in Europe; already 

 in Asia Minor it is larger, with much white on the forewing and the 

 hindwing in the male almost white, this is wiskotti Stgr. Phseosoma Butler 

 from Eastern Asia is at once distinguished by the white tegulie. In this 

 form, which is the normal one in Japan, East Siberia, Korea and North 

 China, the white may be predominant on the forewing, but may also be 

 aberratively reduced as in European specimens. In East Asia where the 

 larva of phasosoma is locally extraordinarily abundant (Greaser), specimens 

 often occur with yellow abdomen and hindwing; this is ab. auripennis Butl. 

 In orientalis Moore, from Kashomir to the Khasia Hills, the thorax and 

 forewing are more yellowish red-brown, as in certain local worms in North 

 America, where caja occurs in some very different varieties (utahensis, 

 opulenta, transmontana) ".'' 



The female type of auripennis Butler is from Tokyo, Honshu 

 (Fenton) , and the female type of phxosoma Butler is from Yoko- 

 hama, Honshu (Jonas). 



Local distribution. — Honshu. In British Museum collection: 

 Oivv^ake, Shinano Province {Pryer) ; Tokyo, Musashi Province 

 (Fenton), type auripennis; Yokohama, Musashi Province {Jonas, 

 Pryer, Lewis), type phasosoma; Nikko, Shimotsuke Province 

 (Maries). In the Wileman collection: Tokyo and Yokohama, 

 August and September, phseosoma? Hokkaido: Shikubi, Oshima 

 Province, August, auripennis. Matsumura records caja from 

 Hokkaido and Honshu and says that it is very abundant at 

 Sapporo, Hokkaido; he records auripennis also from Sapporo. 



Time of appearance. — Larva, May and June; imago July, 

 August, and September. 



General distribution. — Arctia caja. — Throughout Europe and 

 anterior Asia, from Scandinavia, Lapland, and northern Russia 

 southward to the Mediterranean and from the Atlantic Ocean to 

 the Pamir, Kashmir, and even Assam. (Seitz.) 



Arctia phseosoma. — Hampson includes phseosoma Butl. and 

 opulenta H. Edw. under the subspecies americana Harris, from 

 North America. Tegulse with a broad white band in front. 

 Abdomen and hindwing scarlet. Japan, eastern Siberia, Korea, 

 North China. 



"Japanese Injurious Insects (Nihon Gaichuhen) (1899), 33. 

 "Seitz, Macrolep. Faun. Pal. (1910), 2, 98, 99. 



