668 PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



The collecting of the larvae of the first brood is most effectual and 

 rather an easy control-measure, and this is generally practised by the 

 gardeners in Formosa. 



2\To ^. — Hypomeces squa77iosus, Fab. (AolxofiiM-Zomushi.) 

 This insect is very conmionly found throughout the Island of Formosa 



and it is generally noticed that it attacks cotton, orange, tea, mulberry, 



and sugarcane. 



This greenish or greyish CurcuUonid strips the young leaves off 



the tea-bushes, and the injuries are a rather minor thing though it very 



rarely occurs in serious numbers on a few bushes. 



The beetles should be collected and destroyed whenever seen, and 



-the sooner a pest like this is attacked the better. 



No. 46. — Aeolesthes induta, Newm. (Cha-Kamikiri.) 

 The grubs of this longicorn beetle were first found by Mr. M. Maki 

 boring into the stem of a tea-plant, at Horisha in March of the year 

 1917. They were brought to the laboratory of the Division of Ento- 

 mology, and afterwards the beetles emerged on April 15th in that 

 year. On 6th May eggs were deposited by a female beetle beneath 

 the epidermis of a trunk near the soil surface. About two weeks after 

 deposition the young grubs hatched and begun to bore into the centre 

 of the stem. In the next year, 1918, 1 found that the nearly full-grown 

 grubs had all died in the tunnels in December. This probably shows 

 that the whole life-cycle occupies more than one year. 



This insect probably attacks only the large bushes, and the injuries 

 are not known yet. 



No. 47. — Oscinis thece, Lef. [Cha-no-Hamuguribai.) 

 This small leaf-mining fly is a widely distributed species through 

 -the whole tea-districts, but I have never seen this in serious numbers. 

 Probably it is one of our most minor tea-pests. 



No. 48. — An unknown Lepidopterous borer found at Giochi, near 

 Horisha, is a rather serious tea-pest, but its occurrence is quite restricted 

 there. 



No. 49. — Tetranychus bioculaius, W. M. ? (CJia-Akadani.) 

 This mite is commonly found throughout the tea-districts, and the 

 damage done by this pest is an annually recognizable thing. 



