HymenopteraScoliidae – Scoliid Wasps

Triscolia ardens

This record describes Triscolia ardens (species). Recorded family: Scoliidae. Recorded order: Hymenoptera.

Identification and Appearance

Triscolia ardens - Triscolia ardens
Contributed by George Waldren; Additional contributions by Beatriz Moisset , Aaron Schusteff , v belov , KenW , PaleoJon
FeatureDescription
ForewingForewing with three submarginal cells and a single recurrent vein which meets the posterior edge of the 2nd submarginal cell (see diagram here ).
WingsWings very dark, violaceous; thorax entirely black; first two abdominal tergites mostly black, the remaining (posterior) tergites red and more bushy-hairy. Males have a pseudostinger with three narrow spines projecting slightly beyond the tip of abdomen; females lack such spines. Triscolia ardens is presumably the model for the dipteran mimic Mydas ventralis .

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Hymenoptera (Ants, Bees, Wasps and Sawflies)
Superfamily
Scolioidea
Family
Scoliidae (Scoliid Wasps)
Tribe
Scoliini
Genus
Triscolia

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

Habitat and Range

Habitat

Desert, e.g. the Mojave and Colorado deserts of California ( 5 )

Geographic Range

TX, NM, AZ, CA; and south into Mexico. ( 3 ) ( 4 )

Seasonal Activity

June to November

Additional species information

Species notes from the sources

Etymology: Triscolia ardens (Smith, 1855)

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Triscolia ardens. 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 Triscolia ardens (2)

Triscolia ardens - photo 1
Contributed by George Waldren; Additional contributions by Beatriz Moisset , Aaron Schusteff , v belov , KenW , PaleoJon
Triscolia ardens - photo 2
Contributed by George Waldren; Additional contributions by Beatriz Moisset , Aaron Schusteff , v belov , KenW , PaleoJon

Photo credits: Contributed by George Waldren; Additional contributions by Beatriz Moisset , Aaron Schusteff , v belov , KenW , PaleoJon

Frequently Asked Questions About Triscolia ardens

What is Triscolia ardens?

Triscolia ardens is a species in the family Scoliidae, within the order Hymenoptera.

How big is Triscolia ardens?

♀ forewing 19.8 mm; body length 23.4 - 26.5 mm ♂ forewing 19.1 mm; body length 23.6 - 23.9 mm (Noticeably larger than S. dubia haematodes .)

How do you identify Triscolia ardens?
FeatureDescription
ForewingForewing with three submarginal cells and a single recurrent vein which meets the posterior edge of the 2nd submarginal cell (see diagram here ).
WingsWings very dark, violaceous; thorax entirely black; first two abdominal tergites mostly black, the remaining (posterior) tergites red and more bushy-hairy. Males have a pseudostinger with three narrow spines projecting slightly beyond the tip of abdomen; females lack such spines.
Where is Triscolia ardens found?
FeatureDetails
HabitatDesert, e.g. the Mojave and Colorado deserts of California ( 5 )
RangeTX, NM, AZ, CA; and south into Mexico. ( 3 ) ( 4 )
When is Triscolia ardens active?

Triscolia ardens: seasonal activity - June to November.

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

Photo credits: Contributed by George Waldren; Additional contributions by Beatriz Moisset , Aaron Schusteff , v belov , KenW , PaleoJon. Contributors retain copyright over their individual contributions.