Dainyorai is a Japanese variety of univoltine and white colored cocoon. It had been held by Imperial Kyoto Sericultural Science College. The cocoon is large spindle shaped and has flossy wrinkle. The body marking is plain. The cocoon color is light greenish yellow. It is considered that the present Dainyorai is distinct from the Dainyorai strain of the era of Hoei(1704-1711).
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