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Kadambari Pathania

The Perfect Predator: Examining the Morphology and Fascinating Behaviour of Sphex argentatus Wasps

Updated: May 9, 2023


Sphex argentatus, insect of family specidae is a black digger wasp. The image shows different parts of the body- antenna, head, eyes, wings, mesosoma, metasoma and legs.
Sphex argentatus: Dorsal view

Sphex argentatus is a common predatory wasp. It too, like Ampulex, paralyses its prey with its sting. This insect belongs to :



This wasp, black in colour is also a member of thread waisted wasps (having a thin petiole). This petiole connects mesosomal region to metasomal region of the insect.

Sphex argentatus- hymenopteran of sphecidae family of class hexapoda also known as black digger wasp.
S. argentatus body and head

The abdomen of Sphex has overlapping tergites and sternites. These have two pairs of wings (whose ends have dotted appearance), larger forewings and smaller hindwings.


Their head and mesosoma are covered generously with white shiny hair.

A close-up of head and body of Sphex argentatus.
S. argentatus: dorsal view of body and frontal view of head

The female Sphex, will use its sting to inject venom into its prey (for example a cricket), drag the paralysed prey into its next and keep it there for the larvae to feed (a reproductive behaviour similar to Ampulex).

Sphex argentatus: Head showing different structures present on the head- antennae, antennal socket, eyes, ocelli and mandibles.
S. argentatus: Frontal view of head



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