Bombyx hybrid Bombyx hybrid The "Bombyx" hybrid is a hybrid between a female "Bombyx mori" moth and a male "Bombyx mandarina" moth. They produce silkworm larvae like all species of "Bombyx". The larvae look a lot like the other variations. They are brown in the first half and gray at the bottom half, but they get larger black spots than other variations. Generally, they look like a normal "Bombyx" moth, but a bit darker. Hybrids are not used for silk, but are used for research. "Bombyx mori" females are much more likely to mate with a male "Bombyx mandarina", but both species
Bombyx mori and the wild "B. mandarina" can still breed and sometimes produce hybrids. Domestic silkmoths are very different from most members in the genus "Bombyx"; not only have they lost the ability to fly, but their color pigments are also lost. Mulberry silkworms can be categorized into three different but connected groups or types. The major groups of silkworms fall under the univoltine ("uni-"=one, "voltine"=brood frequency) and bivoltine categories. The univoltine breed is generally linked with the geographical area within greater Europe. The eggs of this type hibernate during winter due to the cold climate, and cross-fertilize only by spring, generating