Bark carving behavior of the Japanese horned beetle

(33.0MB, 00:04:55)
Shot Date: 2004/07/12
Shot Location: Kamigamo experimental station of field science education and research center, Kyoto University, Kyoto

* species
Trypoxylus dichotomus septentrionalis

Key Words
carving behavior
sap exudates
horned beetle
Trypoxylus dichotomus septentrionalis

Yoshihito Hongo
2006/04/19 submitted

Animalia >Arthropoda >Insecta >Coleoptera >Scarabaeidae >Trypoxylus >

Video image showing the Japanese horned beetle carving with clypeus the non-wounded bark of Fraxinus griffithii, where no sap were exuding. As a result of this behavior, the bark was stripped and sap exuded from these scars temporarily, which beetles immediately began to lick. Usually, this beetles aggregates to wounded spots of oak trees, such as Quercus acutissima, Q. serrata and Q. mongolica grosseserrata to feed on sap exuding from the wounds which are considered to be caused by boring insects. However, this is probably the first image to show the Japanese horned beetle can obtain sap without depending on other species of insect.

Yoshihito Hongo
Bark-carving behavior of the Japanese horned beetle Trypoxylus dichotomus septentrionalis (Coleoptera: Scarabaeidae). J. Ethol. DOI 10.1007/s10164-006-0202-x

(Data No.momo050525td01a)

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