Sand Wasps

Pronunciation

How to pronounce Bembicini: //ˌbɛm.bɪˈsiː.naɪ//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Summary

The tribe Bembicini, known as sand wasps, is a diverse group of crabronid wasps known for their predatory behavior, primarily on Diptera. They exhibit unique nesting behaviors and can form large aggregations in suitable habitats.

Physical Characteristics

Sand wasps are typically yellow and black, with some species exhibiting black and white coloration and bright green eyes.

Identification Tips

Look for short, simple burrows in sandy soil which may contain densely aggregated nests. Species identification may require examining the coloration and nesting behavior.

Habitat

Sandy soils where burrowing is possible, often in open areas that allow for nesting aggregations.

Distribution

Global distribution with over 1400 species in 62 genera, including more than 200 species in 27 genera within a specific local area.

Diet

Primarily Diptera, with some species also preying on Lepidoptera, Hymenoptera, Neuroptera, Odonata, and Homoptera.

Life Cycle

Nests are typically short burrows with a chamber stocked with paralyzed prey for larvae.

Reproduction

Eggs are often laid in the chamber before it is completely stocked with prey items.

Ecosystem Role

Bembicini wasps play a role as predators, particularly of flies, which may influence the population dynamics of their prey insects.

Collecting Methods

• Netting adult wasps during foraging
• Excavating nests for study

Preservation Methods

• Pinning specimens
• Alcohol preservation

Evolution

Recent cladistic analysis has led to a reclassification and better understanding of their evolutionary relationships.

Similar Taxa

• Bembix rostrata

Misconceptions

Some may confuse sand wasps with more aggressive wasp species, despite their largely non-aggressive nature.

Tags

• Bembicini
• sand wasps
• Hymenoptera
• predators