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Beetles of Zihuatanejo

ORDER COLEOPTERA

Macromerus Weevils
Macromerus (Genus)

-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)

-Snout and Bark Beetles (Superfamily Curculionoidea)

-​True Weevils (Family Curculionidae)

-Subfamily Cryptorhynchinae

-Tribe Cryptorhynchini

-Subtribe Cryptorhynchina

-Genus Macromerus


The Maromerus genus belongs to the Curculionidae family (true weevils), specifically the Cryptorhynchinae subfamily. Members of this subfamily, including Maromerus, are often referred to as woodboring weevils due to their characteristic behavior of feeding on and inhabiting wood or plant stems. Cryptorhynchinae weevils, including Maromerus, typically have specialized adaptations for living in wood and similar plant material.

Diet

  • Adults: Feed primarily on nectar, pollen, flowers, plant sap and tender plant tissues. Adults are often found visiting flowering plants.

  • Larvae: Wood-boring, developing inside branches, stems and trunks of woody plants, where they tunnel through the wood.

  • Larval activity contributes to the breakdown of weakened and dead woody material.

Range

  • Macromerus is a Neotropical genus of longhorn beetles, occurring from Mexico through Central America and into South America.

  • Species occur in tropical and subtropical regions of Mexico, including Guerrero and the Pacific coastal region.

  • Around Zihuatanejo, Macromerus beetles are occasional, with adults most likely to be encountered in forest edges, clearings and flowering vegetation during the warmer and wetter months.

Habitat

  • Found in tropical dry forest, tropical deciduous forest, woodland, forest edges, secondary forest and disturbed vegetation.

  • Adults may be found on flowers, foliage, tree trunks and branches, particularly in sunny locations.

  • Larvae develop inside dead, dying or weakened woody stems and branches.

Size

  • Adult length: approximately 15–30 mm (0.6–1.2 in), depending on species.

  • Body robust and elongated, with very long antennae characteristic of Cerambycidae.

  • Colouration varies among species but commonly includes brown, reddish-brown, black and contrasting pale markings.

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