HymenopteraSphecidae – Thread-waisted Wasps

Prionyx atratus

This record describes Prionyx atratus (species). Recorded family: Sphecidae. Recorded order: Hymenoptera.

Identification and Appearance

Prionyx atratus - Prionyx atratus
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green
FeatureDetails
FemaleWings dark brown/purple; Clypus with gold/silver appressed hairs; Clypus erect hairs black; scutum dull, shagreened; scutellum dull.
MaleSame as above plus - Abdomen black; Scutellum dull; Antennal segment 6 with flat area extending whole length. ( 3 )

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Hymenoptera (Ants, Bees, Wasps and Sawflies)
Superfamily
Trigonaloidea
Family
Sphecidae (Thread-waisted Wasps)
Subfamily
Sphecinae
Tribe
Prionychini
Genus
Prionyx

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

Widespread in North America ( 4 )

Seasonal Activity

June to October

Additional species information

Species notes from the sources

Etymology: Prionyx atratus (Lepeletier de Saint Fargeau, 1845)

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Prionyx atratus. Species-specific details appear above.

Group overview

Hymenoptera includes over 150,000 described species of ants, bees, wasps, and sawflies. Earth harbors approximately 20 quadrillion (20×10^15) ants, with a combined biomass of ~12 megatons of dry carbon - exceeding the combined biomass of all wild birds and mammals (PNAS, 2022).

Ecological role of the group

About 35% of the world's food crops depend on animal pollinators. The chocolate industry, valued at over $100 billion, depends on pollinating flies and midges. Ants are the dominant soil engineers in most terrestrial ecosystems, turning more soil than earthworms in many habitats.

Economic and practical significance of the group

Pollinators contribute $235-577 billion worth of annual global food production (FAO). In the U.S., bee pollination alone benefits crops valued at $18 billion annually, and honey bees are responsible for $5.4 billion in agricultural productivity. Between April 2023-2024, 55.1% of managed honey bee colonies were lost. The U.S. bee population dropped from 5 million to 2.5 million.

Recorded sources for this group: FAO, USDA, EPA, PNAS (2022), US Fish & Wildlife Service. Imported estimates may describe particular regions or reporting periods.

Explore Hymenoptera families and species →

Photos of Prionyx atratus (5)

Prionyx atratus - photo 1
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green
Prionyx atratus - photo 2
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green
Prionyx atratus - photo 3
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green
Prionyx atratus - photo 4
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green
Prionyx atratus - photo 5
Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green

Photo credits: Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green

Frequently Asked Questions About Prionyx atratus

What is Prionyx atratus?

Prionyx atratus is a species in the family Sphecidae, within the order Hymenoptera.

How do you identify Prionyx atratus?
FeatureDetails
FemaleWings dark brown/purple; Clypus with gold/silver appressed hairs; Clypus erect hairs black; scutum dull, shagreened; scutellum dull.
MaleSame as above plus - Abdomen black; Scutellum dull; Antennal segment 6 with flat area extending whole length. ( 3 )
Where is Prionyx atratus found?

Range: Widespread in North America ( 4 )

When is Prionyx atratus active?

Prionyx atratus: seasonal activity - June to October.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by tom murray; Additional contributions by Beatriz Moisset , Robert H. Biagi , Nathaniel Green. Contributors retain copyright over their individual contributions.