162 The Philippine Journal of Science i9i8 



severed. Kamimura says, in writing of the larva of a moth 

 that he names in Japanese hoshi-iisuiro-iikon, or the kama-tsuka 

 caterpillar (identified by me from his figure of the male imago 

 as the larva of Topomesoides jonasii) , that he thought that this 

 larva, which he reared in a breeding cage, together with another 

 larva belonging to the family Ljonantriidse, also belonged to the 

 same family. Much to his surprise this larva, instead of spin- 

 ning a cocoon as an ordinary lymantriid should do, affixed itself 

 by the tail to the top of the breeding cage and passed through the 

 pupal transformation without spinning a cocoon. He, therefore, 

 thought that some mistake had occurred. However, on rebreed- 

 ing similar larvae on several occasions in subsequent years 

 imagoes of Aroa jo^iasii always emerged from them. 

 The larva is described by him as follows : 



Larva fifth stage. Head black and shining; the whole of the body black; 

 black dorsal tubercles on segments 3 and 7; body covered with light brown 

 hairs, which are particularly long from segmenis 1 to 3 and from segment 

 10 to anal segment; the central segments of the body, 8 and 9, are chiefly 

 yellow; segments 6 and 7 are not so yellow; segments 4 to the anal segment 

 are marked with yellow spots on the spiracular line; ventrum of last 

 segment is ashy-yellow. 



The larva feeds on the Kama-tsuka,^' if molested it wriggles about and 

 falls down. 



* * * the imago emerges at the beginning of May and larvae in their 

 third or fourth stages are also to be found during the same month. A 

 larva in its fourth stage, taken on 8 May, became dormant on 14 May and 

 changed into the fifth stage on 14 May; it pupated on 29 May and the 

 imago emerged on 7 June. 



The food plants of jonasii are: Niwa-toko (Samb2icits race- 

 mosa L.), also called in Japanese tazu-no-ki, komo-utsugi, and 

 kohu~no-ki. Kamatsuka is also called ushi-koroshi (Pour- 

 thiaea villosa Dene.). 



Local distribution. — Honshu : Oiwake, Shinano Province 

 (Prjjer) ; Yokohama, Musashi Province (Jonas) ; Hoshikawa, 

 Musashi Province, July (Wileman) ; Yoshino, Yamato Province, 

 June (Wilenian) ; Nikko, Shimotsuke Province, August (Wile- 

 man) ; Myoken-zan, Settsu Province, May (Wileman) ; Hakone, 

 Sagami Province, August (Leech). Kyushu: Satsuma Province, 

 May (Leech) ; Nagasaki, Hizen Province, June (Leech) ; Kimbo- 

 san, Higo Province, May (Wileman). Matsumura I'ecords the 

 species from Honshu and Kyushu. 



Time of appearayice. — Larva and pupa. May and June ; imago. 

 May to August. 



General distribution. — Japan and Korea (Matsumura). 



"Also called ushi-koroshi (Pourthiaea villosa Dene.). 



