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Beetles of Zihuatanejo

ORDER COLEOPTERA

Silini Soldier Beetles
Silini (Tribe)

-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)

-Elateriform Beetles (Infraorder Elateriformia)

-Click, Firefly, and Soldier Beetles (Superfamily Elateroidea)

-​Soldier Beetles (Family Cantharidae)

-​Subfamily Silinae

-Tribe silini


Silini beetles are known for their predatory and pollinating roles in ecosystems. Adults are typically active on flowers, where they feed on nectar, pollen, and small insects, contributing to pollination while also serving as natural pest control. The larvae, which are usually found in soil or leaf litter, are active predators that feed on other invertebrates.

Diet

  • Adults: Primarily feed on small insects, aphids, caterpillars and other soft-bodied invertebrates, although some species also consume nectar and pollen.

  • Larvae: Predatory, living in leaf litter, soil, decaying vegetation and beneath bark, where they hunt small insects and other invertebrates.

  • This combination of predatory adults and larvae makes Silini useful predators in terrestrial ecosystems.

Range

  • Mexico supports several Silini species, particularly in temperate, subtropical and montane environments.

  • When present locally, they are most likely to be found during the rainy season, when flowering vegetation and insect prey are abundant.

Habitat

  • Often associated with grassland, meadows, woodland edges, forest margins and flowering vegetation.

  • Adults may be found on flowers and foliage, where they hunt small insects or feed on pollen and nectar.

  • Larvae generally remain hidden in leaf litter, soil and decomposing vegetation.

  • Around Zihuatanejo, the most promising places to look would be lush vegetation along streams, forest edges and seasonally moist areas.

Size

  • Adult length: approximately 5–15 mm (0.2–0.6 in), depending on species.

  • Body generally elongate and soft-bodied, with relatively long legs and antennae.

  • Colouration varies considerably but commonly includes black, brown, orange, yellow or reddish areas.

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