Preferred Scientific Name; Acrocinus longimanus. Taxonomic Tree; Domain: Eukaryota; Kingdom: Metazoa; Phylum: Arthropoda; Subphylum. Harlequin beetle, (Acrocinus longimanus), large tropical American beetle with an elaborate variegated pattern of black with muted red and greenish yellow. PDF | The occurrence of Acrocinus longimanus (Linnaeus, ) in Corrientes, Argentina, is reported for the first time. This record extends the.

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This large tropical long-horned beetle has a distinct red, black and orange markings on its wing covers. The harlequin beetle is also distinguished by its extremely long forelimbs, which often extend longer than the entire body of the insect.

File:Acrocinus longimanus MHNT – Wikipedia

Like all beetles, the body is divided into three parts consisting of the head, thorax and abdomen. The harlequin beetle is encased by a hard exoskeleton that serves as its acrocnius form of protection.


Mandibles in the front of its head allow for cutting and grasping of food while the antennae are the primary means of sensing its surrounding environment. The harlequin beetle is native to and widespread throughout southern Mexico and Arcocinus America.

It usually burrows a nest in trees covered in bracket fungus in order to have better camouflage for its larvae. Young beetles will live in this tree hole for 4 to 12 months before finally burrowing through and emerging from the wood.

Harlequin beetles are known to host a group of species known as pseudoscorpions. lingimanus

These tiny arachnids live on their abdomens, resulting in a commensalist relationship that causes no harm to individual beetles. The harlequin beetle has a diet similar to other tropical beetles. Wood and aacrocinus are essential to its survival along with fungi and plants.

It has also been found that harlequin beetles can survive solely on the dung and excrement of other animals.


The largest threat to the harlequin beetle is the destruction of its habitat by deforestation and other human disturbances. Birds, lizards and frogs also actively prey on the harlequin beetle. Last Updated on September 14, Fact Wood and bark are essential to the harlequin beetle’s survival.

Forests are home to 80 percent of Earth’s terrestrial biodiversity! We’re preserving habitats for endangered species, conserving wildlife corridors, and saving breeding grounds.

File:Acrocinus longimanus MHNT femelle.jpg

Please join our alliance to keep forests standing: Please leave this field empty. University of Michigan Museum of Zoology www. As forests disappear, countless species are threatened with extinction. You Might Also Like