Wasps are insects in the order Hymenoptera, which also includes sawflies, bees, and ants. Wasps such as hornets are social and live together in a nest. But most wasps are solitary. Wasps can be predators and pollinators. Some are parasitoidal, meaning they lay their eggs IN or ON other insects. The larvae eventually kill the host insect. Solitary wasps often do this to pest insects, so can be a beneficial pest control for crops. 

Pictured here are a handful of the different wasps in Sinai:

Sand Wasp (Bembix sp.)
Caterpillar Hunting Wasp (Delta dimidiatipenne)
Carrot Wasp (Gasteruptiidae family)
Oriental Hornet (Vespa orientalis)
Thread-waisted Wasp (Ammophila sp)