Leptaulax bicolor explained

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.^[1]

Description

Parietal ridge extending to supraorbital ridge. The anterior marginal groove of pronotum is more pronounced and broader. Body consists with many large, distinct punctures. Hypostomal process without longitudinal groove on ventrum.^[2]

Synonyms

There are several synonyms assigned to the species due to widespread distribution and similarity with other related species.^[3]

• 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

Notes and References

1. Web site: Leptaulax bicolor. Australia. Atlas of Living. bie.ala.org.au. en-AU. 2019-06-25.
2. Web site: A review of the genus Leptaulax Kaup, 1868 (Coleoptera: Passalidae) from Vietnam, with the first record of L. loebli Kon, Johki & Araya, 2003 . 2021-07-26 . Bonn zoological Bulletin 70 (2): 247–251.
3. Web site: Leptaulax bicolor (Fabricius, 1801). India Biodiversity Portal. 2019-06-25.