-654 



PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



This insect probably has five or six generations in a year, and tbe 

 whole life-cycle occupies 35—54 days. The following table summarizes 

 the actual breeding in the laboratory in Taihoku. 



.No. 32. — DasycJiira dmlgeoni, Swinh.:= Or (/^m viridescens, [wee Walk.] 

 Shir. {Momo-GoJcvga.) 



This species is connnonly found in Formosa throughout the whole 

 year, and it occurs somewhat abundantly on the tea-plant. The other 

 food-plants are peach. Primus iniime, Primus communis, orange, rose, 

 and mulberry, and on the last this is the rarest of all the caterpillar 

 mulberry pests. 



About two or three hundred eggs are deposited irregularly by the 

 parent on the leaf-surface in a single layer. They are pale yellowish 

 brown and spherical, the free surface being slightly depressed in the 

 middle and the attached surface more or less flat ; they measure about 

 -■0-6 mm. in diameter. In the winter season about 12 days after eggs 

 have been deposited the larvse emerge and immediately eat the leaf, 

 •gathering on the leaf, but they disperse here and there after a few days. 

 The caterpillars are very active and feed on several leaves along their 

 margins, leaving the midribs, in the daytime or at night. I have never 

 met the fact that this caterpillar defoUates the bush over a large patch 

 of tea-garden, and its injuries may be less than in Ewprodis conspersa. 



The larva, in the first instar, is pale greenish-grey with a dark tinge 

 - on the dorsum, with the head black ; on each somite there are ten 

 tubercles from which project short blackish hairs, each of the lateral 

 tubercles bearing two long white hairs, and the pair at the apical margin 

 of the first thoracic somite with a long tuft projecting forwards. It 

 grows up to about 3 mm. long. After the first moidt, the caterpillar 

 becomes about 6 mm. long, when full-fed, and on each of the first and 

 second abdominal somites there appears a compact black tuft, and on 



