Chien C. Lee

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You might think that an animal with an excessively long neck would be predisposed to unfortunate injuries, but such eccentricities in body form can become justified in the competitive arena of sexual selection. This tiny Bornean weevil (Cycnotrachelus satelles), closely related to the famous Giraffe Weevil of Madagascar, uses his lengthy neck in wrestling matches to dislodge rival males off their food plants during mating season. Having intimidating physical attributes can sometimes mean combat is not even necessary: males have been observed facing off, nodding their heads (the necks are hinged in the middle) before one makes a retreat. The females, which are not thus pressured by competition, have much shorter necks. Danum Valley, Sabah, Malaysia (Borneo).

Copyright
© Chien C. Lee
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Keywords
Apoderinae, Attelabidae, Borneo, Coleoptera, Cucujiformia, Curculionoidea, East Malaysia, Insecta, Malaysia, Polyphaga, Sabah, Southeast Asia, animal, arthropod, beetle, fauna, insect, invertebrate, leaf-rolling weevil, snout beetle, tropical, weevil
Contained in galleries
Borneo, Insects
You might think that an animal with an excessively long neck would be predisposed to unfortunate injuries, but such eccentricities in body form can become justified in the competitive arena of sexual selection. This tiny Bornean weevil (Cycnotrachelus satelles), closely related to the famous Giraffe Weevil of Madagascar, uses his lengthy neck in wrestling matches to dislodge rival males off their food plants during mating season. Having intimidating physical attributes can sometimes mean combat is not even necessary: males have been observed facing off, nodding their heads (the necks are hinged in the middle) before one makes a retreat. The females, which are not thus pressured by competition, have much shorter necks. Danum Valley, Sabah, Malaysia (Borneo).