Origin(Kinshoku(Matsumoto))

Kinshoku(Matsumoto) had been preserved by Sericultural Experiment Station of Japan. It is a bivoltine Japanese golden yellowish cocoon strain. It has brownish black newly hatched larva, yellowish white body color and plain body marking. The cocoon is golden yellow colored and peanut shaped. The hibernating egg is grayish purple colored. The data on the Kinshoku(Matsumoto) for early autumn rearing tested by Sericultural Experiment Station of Japan in the 23rd year of Showa(1948) is as follows:
(1) Percentage of Double Cocooning Silkworms 10%
(2) Cocoon Weight 1.55g
(3) Cocoon Shell Weight 23.1cg
(4) Percentage of Cocoon Shell Weight 14.9%
(5) Size of Cocoon Filament 2.61d

References
1) Eikichi HIRATSUKA(1961) : History of Modern Silkworm Race Breeding, Dainippon Silk Foundation, Silk Science Research Institute, pp236
2) Eikichi HIRATSUKA(1969) : Genealogy of Japanese Silkworm Races for Practical Use, Dainippon Silk Foundation, Silk Science Research Institute, pp335