The other six species are stably divided into two natural groups.In one group, K. sindica and K. lacca have the closest relationship and formed as sister taxon with much similarity in morphology.

• 其它6种紫胶虫稳定地分化为两大支系：信德紫胶虫与紫胶蚧构成一个支系，二者在外部形态结构上有许多相似的地方，形成紧密的姐妹群关系，主要分布在印度次大陆热带地区，属于较原始的种类；