Conotrachelus
Conotrachelus
Classification
- Phylum: Arthropoda
- Subphylum: Hexapoda
- Class: Insecta
- Order: Coleoptera
- Suborder: Polyphaga
- Superfamily: Curculionoidea
- Family: Curculionidae
- Subfamily: Molytinae
- Tribe: Conotrachelini
- Genus: Conotrachelus
Pronunciation
How to pronounce Conotrachelus: /ˌkɒnoʊˈtrækələs/
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Summary
Conotrachelus is a diverse genus of true weevils, encompassing over 1,000 species, many of which are associated with significant agricultural plants. They are predominantly phytophagous, with many species known as pests of fruit crops.
Physical Characteristics
Members of the genus Conotrachelus are characterized by their elongated bodies, often exhibiting a distinct weevil morphology with a prolonged snout and hard, protective elytra covering their wings. The colors and patterns may vary significantly among species.
Identification Tips
Look for the characteristic snout and the hard body typical of weevils. Species can often be identified by specific body markings and size, which vary greatly within the genus.
Habitat
Commonly found in various habitats that support the plants they are associated with, including agricultural areas, forests, and grasslands.
Distribution
The genus Conotrachelus is distributed from Canada to Argentina and Bolivia, with 63 species in the northern region, and over 500 total species identified globally.
Diet
Most species feed on a variety of plant materials, particularly fruits, leaves, and stems, making them phytophagous insects.
Life Cycle
The lifecycle typically includes egg, larval, pupal, and adult stages, with adults overwintering in ground litter. Specifics may vary by species.
Reproduction
Conotrachelus weevils lay eggs on or in their host plants. The larvae then develop, feeding on the plant material as they grow.
Predators
Natural predators include various insectivorous birds, other insects, and possible parasitic wasps that target the larvae.
Ecosystem Role
They play a role in their ecosystems as herbivores, affecting plant health and growth, and as a food source for predators.
Economic Impact
Several species within the genus are recognized as pests, particularly of fruit crops, leading to significant economic consequences in agriculture.
Collecting Methods
- Light trapping
- Hand collecting from host plants
- Pitfall trapping
Preservation Methods
- Ethanol preservation
- Pinning and drying
- Freezing
Misconceptions
Some may confuse members of Conotrachelus with non-pest species, underestimating their impact on agriculture or their role in ecosystems.
Tags
- weevil
- Curculionidae
- pests
- insects
- agriculture