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| Patent-leather beetle | |
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| Near Kota Kinabatangan River, Borneo, Malaysia | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Passalidae |
| Genus: | Odontotaenius |
| Species: | O. disjunctus
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| Binomial name | |
| Odontotaenius disjunctus (Illiger, 1800)
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| Synonyms | |
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Odontotaenius disjunctus, the patent-leather beetle or horned passalus, is a saproxylic beetle in the family Passalidae (bess beetles) which can grow to just over an inch-and-a-half long, weigh 1-2 grams and are capable of pulling 50 times their own weight.[1] They have been used to study several aspects of general family characteristics since the early 1900s but remain a relatively unknown species within the diverse Coleoptera order.