Study on the cross hereditary experiments in Dendrolimus spp.
The results of hybridization experiments between Dendrolimus punctatus and D. tabulaeformis, experiments on feeding habits, conspecific and intraspecific mating, sex pheromones and cross inheritance are considered to show that the two are the same species. The differences in morphology, especially in the anatomy of the genitalia, did not indicate differences at the specific level or reproductive isolation. Reciprocal crosses between the 2 species produced fertile progenies. On the basis of differences between them in morphological and ecological characteristics, and the distribution of the 2 species (mainly according to their food trees in China), D. tabulaeformis may be regarded as a subspecies of D. punctatus.