658 



PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



cocoon which is exactly hke a tea-seed both in shape and size but 

 usually greyer, and is buried in the soil about half an inch or more 

 deep under the bushes. It is, however, very rarely formed on the 

 plant, between the leaves, where it remains for about one month (or 

 two or more months in the winter time), after which the moth emerges. 

 So far as we can make out, there are two broods per annum, the whole 

 life-cycle occupying about four (or eight) months. The following table 

 shows one of my actual rearings summarized very briefly : — 



The caterpillar lives solitarily, and is never gregarious even when 

 newly hatched, and eats the leaf from the top margin. I have no 

 record of the serious occurrence of this pest on tea or even on 

 orange. 



I reared 28 small greyish-black Tachinid flies from a nearly full- 

 grown caterpillar ; the parasite may be one of the effective natural 

 enemies. 



No. 35. — Thosea castanea, Wilem. (Taiwan-Hime-Iraga.) 



This Limacodid moth is commonly collected in April or May in the 

 districts of Taihoku-Cho, but it is known that this insect very rarely 

 attacks the tea-bush, with only one instance in the field of the Agricul- 

 tural Experiment Station, Government of Formosa, Taihoku. 



No. 36. — Orthocraspeda trima, Mo.=^ Thoseoides fasciata, Shir. (Obi- 



Iraga.) 



This Limacodid caterpillar is found from February to October on 

 tea or orange or rarely on mulberry, but its injury is not usually serious 

 to any plants. 



The pale yellowish eggs are singly laid by the female moth on the 

 leaf, and are elliptical and slightly flat, covered with a few anal tuft- 

 hairs. The full-grown caterpillar measures about 15 mm. in length,, 

 with a broad smoky-black dorsal stripe which becomes very wide from 

 the first somite to the fourth somite, and bears a similar coloured branch 

 on each side of the ninth somite. This broad blackish band separates 

 into lateral two by a narrow interrupted white median dorsal stripe 

 which on the third and fourth somites surrounds the dorsal tubercles.. 

 On each somite there are four tubercles of which the dorsal two are; 

 small and bear short blunt spines, while the lateral pair are long, project 



