Maruka Corporation is a Japanese toys company based in Tokyo. It was founded in 1962. It started as a distributor of toys through whole Japan and later turned into a manufacturer.
The Greatest Beetle Legend
Series of 8 pvc solide beetle figures sold in blister packs.
001. Hercules beetle
002. European stag beetle
003. Three-horned rhinoceros beetle
004. Giraffe stag beetle
Prosopocoilus giraffa keisukei
005. Sawtooth stag beetle
006. Japanese rhinoceros beetle
Allomyrina dichotoma 
007. Cauccasus beetle
008. Elephant beetle
Pictures are courtesy of BMathison
1. Marketed as Trypoxylus dichotomus