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Beetles of Zihuatanejo

ORDER COLEOPTERA

Dendrobias mandibularis
Dendrobias mandibularis

-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-Beetles (Order Coleoptera​​)

-​Water, Rove, Scarab, Long-horned, Leaf, and Snout Beetles (Suborder Polyphaga)

-​Cucujiform Beetles (Infraorder Cucujiformia)

-Longhorn Beetles (Family Cerambycidae)​

-​Round-necked Longhorn Beetles (Subfamily Cerambycinae)

-Tribe Trachyderini​

-Genus Dendrobias

-Long-jawed Longhorn Beetle (Dendrobias mandibularis)


Dendrobias mandibularis is a species of longhorn beetle in the family Cerambycidae, notable for its robust build and prominent mandibles. It occurs in tropical regions of the Americas, including Mexico, where it is associated with forested habitats. The larvae are wood-borers, developing inside dead or decaying wood, where they feed on plant tissue and contribute to decomposition. Adults are typically nocturnal and may be attracted to lights, while during the day they remain hidden on tree trunks or within crevices.

Diet

  • Larvae: Develop within dead and dying wood, boring through branches, stems, and trunks of woody plants.

  • Adults: Feed on sap, nectar, pollen, flowers, and occasionally tender plant tissues. Adult feeding is not extensively documented for this species.

Range

  • Dendrobias mandibularis is a Neotropical longhorn beetle in the family Cerambycidae, subfamily Cerambycinae, tribe Trachyderini.

  • The species occurs in Mexico and Central America, particularly in tropical and subtropical forest regions.

  • Its Mexican distribution includes the Pacific slope, including records from Guerrero.

Habitat

  • Associated with tropical dry forests, tropical deciduous forests, tropical rainforests, woodland edges, and secondary forests.

  • Larvae develop in dead branches, fallen logs, and weakened woody stems.

  • Adults are typically found on tree trunks, branches, foliage, and flowers, especially in warm conditions.

Size

  • Adult length: approximately 20–30 mm (0.8–1.2 in).

  • A robust longhorn beetle with particularly prominent mandibles, especially in males.

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