G. it. Ent., 10 (50): 133-140
September 2002
Molecular phylogeny of Japanese and Taiwanese stag beetles of
the genus Dorcus and allied genera (Coleoptera, Lucanidae)
based on random amplified polymorphic DNA
by
TADATSUGU HOSOYA, KUNIO ARAYA & YASUYUKI SHIROTA
Abstract - Seven taxa (six species and one additional subspecies) of the lucanid genus Dorcus MacLeay from Japan and Taiwan were examined using random amplified polymorphic DNA (RAPD) to analyse their phylogenetic relationships. Three taxa (two subspecies and one species) of the genus Prosopocoilus Hope & Westwood were used as outgroup. The resultant tree indicates that the Japanese and Taiwanese members of the genus Dorcus are monophyletic and form three lineages. To the first lineage belong D. curvidens binodulosus Waterhouse, D. rectus rectus Motschulsky, and two subspecies of D. titanus Boisduval, forming three subclusters, respectively. To the second belong D. rubrofemoratus Vollenhoven and D. montivagus montivagus Lewis. The third is monotypic with D. striatipennis striatipennis Motschulsky, which is supposed to have diverged early in the genus Dorcus.
