Hidden Snout Weevils
Cryptorhynchinae
Classification
- Phylum: Arthropoda
- Subphylum: Hexapoda
- Class: Insecta
- Order: Coleoptera
- Suborder: Polyphaga
- Superfamily: Curculionoidea
- Family: Curculionidae
- Subfamily: Cryptorhynchinae
Pronunciation
How to pronounce Cryptorhynchinae: /krɪptoʊˈrɪnkaɪniː/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Images
Summary
Cryptorhynchinae is a large subfamily of weevils consisting of around 6000 species, distinguished by a unique snout morphology and habitat preferences. While some species are pests, the majority are integral parts of forest ecosystems.
Physical Characteristics
Characterized by their backwardly directed rostrum (snout) that fits within a protective channel on the mesoventrite, and the ends of the tibiae bearing small hook-like extensions known as uncus.
Identification Tips
Identification can be aided by examining the rostrum orientation and the tibial structure, particularly the uncus.
Habitat
Primarily found in primary forests, often on deadwood.
Distribution
Found in most zoogeographic regions; most diverse in the Neotropics, Australia, and Oceania.
Diet
Many species are associated with woody plants for oviposition; specific diets vary among species.
Life Cycle
Completing their lifecycle in primary forest habitats; larvae develop in wood or plant material.
Reproduction
Typically involves oviposition in woody plants; specific reproductive behaviors may vary by species.
Predators
Depends on species; some may have specific natural enemies, typically other insects or birds.
Conservation Status
Many species are threatened by habitat loss, particularly in primary forests.
Ecosystem Role
Play a role in the decomposition of wood and can influence wood decay processes.
Economic Impact
Some species, like the mango seed weevil (Sternochetus mangiferae), are considered agricultural pests.
Collecting Methods
- Hand collection from host plants
- Flight intercept traps
- Bark dissection to find larvae
Preservation Methods
- Ethanol preservation
- Pinning for adult specimens
- Storage in insect boxes
Evolution
Originated in the Late Cretaceous in South America, with several dispersal events to other regions.
Similar Taxa
Misconceptions
Some may confuse them with other weevils or assume all are agricultural pests, while many live in forest habitats.
Tags
- weevil
- Cryptorhynchinae
- entomology
- biodiversity
- agricultural pests