143 



hatch in about ten days and the larva matures within 20 days. The 

 adults of the second generation appear at the end of August, and the 

 resulting larvae pupate in the earth in the middle of September. 

 Both sexes, especially the male, seem to be very short-lived. The 

 larva is preyed upon to a large extent by Polistes sp., and parasitised 

 by Diptera. 



Maki (M,). Ine o gaisuru Taiwansan Shiroari. [Formosan Termites 

 attacking Rice.] — ■Konchu-Sekai [Insect World], Gifu, xxiii, no. 

 12, 15th December 1919, pp. 435^39, 2 figs. 



The termites injurious to rice in Formosa and here recorded are : — 

 Odontotermes formosanus, Shiraki, attacking the plants in the paddy- 

 field, and Capritermes nitobei, Shiraki, and Procapritermes mushae, 

 Oshima & Maki, attacking the roots in dry fields. 



Kazui (M.). Noshime-Koguga, Plodia inter punctella, ni tsuite. [On 

 the Indian Meal-moth, Plodia inter punctella.'] — Konchu-Sekai 

 [Insect World], Gifu, xxiii, no. 12, 15th December, 1919, pp. 445- 

 449, 1 fig. 



Plodia inter punctella is recorded as occurring in the storehouses 

 of the Imperial Agricultural Experiment Station. It is stated that 

 the larva eats only the outer husk of the rice grain, so that the effect 

 is to render it far whiter. 



MuRAMATSU (S.). Nashi-Himeshinkui. [The Smaller Pear Borer.]— 

 Byochugai Zasshi [Journal of Plant Protection], Tokyo, vi, no. 12, 

 5th December 1919, pp. 19-25. 



The smaller pear borer or Japanese peach moth, Cydia (Laspeyresia) 

 molesta, Busck, is one of the most destructive insects in Korea. This 

 pest has three generations a year ; it passes the winter in the larval 

 state and pupates in the middle of May ; the first moths appear at 

 the end of May and lay their eggs singly on the buds or shoots of the 

 peach, and the young larvae injure the tip of the twigs. These larvae 

 pupate in the middle of June and the adults appear at the end of 

 that month. The moths of this generation oviposit partly on peach- 

 trees and partly on plum, pear, apricot and apple, the resulting larvae 

 infesting the twigs as well as the fruits. They pupate at the beginning 

 of August, and emerging at the end of the month, oviposit on the 

 fruits. The larvae bore into the pulp and do considerable damage 

 at this period. 



The egg-stage usually lasts about ten days, the pupal eight days 

 and the larval, other than that which overwinters, 23 or 24 days. 

 The adults usually live two weeks. As regards injuries to pears, the 

 Japanese races suffer severely, but are not often attacked. The winter 

 is passed by the larva in a stout cocoon in crevices of bark, etc., in 

 the orchards, and in cracks in the ceilings and floors of stores. On 

 100 pears examined in August an average of 5 eggs and 4 larvae per 

 fruit were found. The preferred food-plants are pear fruits, peach 

 fruits, apple fruits, pear shoots, peach shoots and cherry shoots in 

 the order given. 



