Willow Oak Sawfly
Arge quidia
This record describes Arge quidia (species). Recorded family: Argidae. Recorded order: Hymenoptera.
Identification and Appearance
Similar to A. scapularis , but much larger, with a different shaped sheath and antennae
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hymenoptera (Ants, Bees, Wasps and Sawflies)
- Family
- Argidae (Argid Sawflies)
- Genus
- Arge
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
e. NA (QC-FL to ON-IL-MS)
Diet and Behavior
Diet: on oak ( Quercus )
Additional species information
Species notes from the sources
Etymology: Arge quidia D.R. Smith 1989
About Flies: the wider group
Order-level background for Hymenoptera, the group containing Arge quidia. 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.
Photos of Willow Oak Sawfly (3)
Photo credits: Contributed by Beatriz Moisset; Additional contributions by tom murray , Chuck Entz , v belov
Frequently Asked Questions About Willow Oak Sawfly
What is Willow Oak Sawfly?
Willow Oak Sawfly (Arge quidia) is a species in the family Argidae, within the order Hymenoptera.
How big is Willow Oak Sawfly?
♂ 8.0-9.5 mm, ♀ 9.0-12.0 mm
How do you identify Willow Oak Sawfly?
Similar to A. scapularis , but much larger, with a different shaped sheath and antennae
Where is Willow Oak Sawfly found?
Range: e. NA (QC-FL to ON-IL-MS)
What does Willow Oak Sawfly eat?
The diet of the Willow Oak Sawfly includes on oak ( Quercus ).