Hexarthrius mandibularis Sept 10, 2018 11:45:46 GMT -8 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by elakafarmor on Sept 10, 2018 11:45:46 GMT -8 I really like H. mandibularis and have a big male; 114mm.I guess that this specimen it is a H m sumatranus because of the length. Am I right?