Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.
A well-defined conservation unit provides a proper target of protection and abundant information on the following conservation policy. In Taiwan, a protected click beetle named therainbow sheath click beetle is believed to include two independent species:Campsosternuswatanabei and C. yasuakii. To verify their species status and the conservation unit, five Campsosternus spp. were included for reconstructing phylogenetic trees by using molecular approaches (two mitochondrial markers and one nuclear marker), and examining morphological characteristics (e.g. female bursa copulatrix). The molecular data indicate thatC.yasuakii should be recognized as synonymous with C.mirabilis. In addition, the anatomical comparison of the female bursa copulatrix, which is vital in genera classification but is often undervalued, suggests the probability of a cryptic genus existing in Campsosternus. Therefore, this study suggests that a taxonomic system solely based on morphology might be unstable, and the robustness of the systematic taxonomy of the family Elateridae can be strengthened using both morphological and molecular tools.