Leptaulax bicolor is a beetle of the family Passalidae found throughout Australia, Cambodia, Eastern Himalayas, India, Indonesia: Borneo, Java, Moluccas, Sulawesi, Sumatra; Laos, Malaysia, Myanmar, New Guinea, Philippines, Sri Lanka, Thailand and Vietnam.
Synonyms There are several synonyms assigned to the species due to widespread distribution and similarity with other related species.
Leptaulacides analis Zang, 1906 Leptaulacides anaulax Zang, 1905 Leptaulacides andamanarum Zang, 1905 Leptaulacides fruhstorferi Zang, 1905 Leptaulacides nietneri Zang, 1905 Leptaulacides palawanicus Zang, 1905 Leptaulacides papuanus Zang, 1906 Leptaulacides rugulosus Zang, 1905 Leptaulax abdominisculptus Kuwert, 1891 Leptaulax aurivillii Kuwert, 1891 Leptaulax batchianae Kuwert, 1891 Leptaulax calcuttae Kuwert, 1891 Leptaulax cicatricosus Kuwert, 1891 Leptaulax consequens Kuwert, 1891 Leptaulax differentispina Kuwert, 1891 Leptaulax dindigalensis Kuwert, 1898 Leptaulax divaricatus Kuwert, 1898 Leptaulax evidens Kuwert, 1898 Leptaulax formosanus Doesburg, 1942 Leptaulax geminus Kuwert, 1898 Leptaulax hansemanni Kuwert, 1898 Leptaulax incipiens Kuwert, 1891 Leptaulax malaccae Kuwert, 1891 Leptaulax manillae Kuwert, 1891 Leptaulax maxillonotus Kuwert, 1891 Leptaulax medius Kuwert, 1891 Leptaulax morator Kuwert, 1898 Leptaulax niae Kuwert, 1898 Leptaulax novaeguineae Kuwert, 1891 Leptaulax obtusidens Kuwert, 1891 Leptaulax roepstorfi Kuwert, 1898 Leptaulax separandus Kuwert, 1891 Leptaulax sequens Kuwert, 1898 Leptaulax subconsequens Kuwert, 1891 Leptaulax sumatrae Kuwert, 1898 Leptaulax tenesserimensis Kuwert, 1898 Passalus innocuus Dejean, 1837 Passalus vicinus Percheron, 1844 Passalus bicolor Fabricius, 1801
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