Eastern Yellowjacket - approx. 1.5 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Vespula
Species: Maculifrons
More Eastern Yellowjackets
More Eastern Yellowjackets
Updated September 19 2013
Bald-faced Hornet - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Dolichovespula
Species: Maculata
More Bald-faced Hornets
More Bald-faced Hornets
Updated August 26 2016
Aerial Yellowjacket Wasp - approx. 1.7 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Dolichovespula
Species: Arenaria
Also known as Sandhills Hornet. Possibly Hybrid
Yellowjacket (Vespula flavopilosa)?
Mason / Potter Wasp - approx. 1.5 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Eumeninae (Mason & Potter Wasps)
Yellowjackets & Hornets
Page Last Updated: March 9 2019
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13 species
Mason / Potter Wasp - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Eumenes
Species: Fraternus
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Subfamily: Eumeninae (Mason & Potter Wasps)
Genus: Ancistrocerus
Species: Antilope?
Mason / Potter Wasp - approx. 1.8 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Eumeninae (Mason & Potter Wasps)
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Genus: Ancistrocerus
Species: Adiabatus
Mason / Potter Wasp - approx. 9 mm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Eumeninae (Mason & Potter Wasps)
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Genus: Ancistrocerus
Species: Gazella
More A. gazella Wasps
More A. gazella Wasps
Updated August 13 2012
A  Jagged Ambush Bug has caught this wasp by the leg -
native to Eurasia
Eastern Yellowjacket - approx. 1.5 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Vespula
Species: Maculifrons
More Eastern Yellowjackets
More Eastern Yellowjackets
Updated September 19 2013
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
More E. fraternus Wasps
More E. fraternus Wasps
Updated March 9 2019
More A. antilope Wasps
More A. antilope Wasps
Updated January 18 2013
Mason / Potter Wasp (female) - approx. 1.5 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Eumeninae (Mason & Potter Wasps)
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Genus: Ancistrocerus
Species: Spinolae
Photograph by Ed McAskill
Eastern Yellowjacket (with Black and Yellow Argiope Spider) - approx. 1.5 cm - Lower Don Valley (Crother's Woods) - August 2007
Eastern Yellowjacket - approx. 1.5 cm - Lower Don Valley (Crother's Woods) - October 2012
Bald-faced Hornet on Japanese Knotweed - approx. 2 cm - Lower Don Valley (Crother's Woods) - September 2007
Aerial Yellowjacket Wasp (Sandhills Hornet) - approx. 1.7 cm - Etobicoke Valley Park - August 2007
Mason / Potter Wasp (female) - approx. 1.5 cm - Kortright Centre for Conservation - June 2012
Mason / Potter Wasp with unknown larva - approx. 1.5 cm - Lower Don Valley (Crother's Woods) - July 2009
Mason / Potter Wasp on Wild Grape - approx. 1.8 cm - Lower Don Valley (Leaside) - September 2012
Mason / Potter Wasp on Grass-leaved Goldenrod - approx. 9 mm - West Don Valley (E.T. Seton Park) - August 2012
Mason / Potter Wasp (Eumenes fraternus) on Grass-leaved Goldenrod - approx. 2 cm - Lower Don Valley (Crother's Woods) - September 2011
Collects wood fibre from park benches and rail fences for
building their nest
European (German) Yellowjacket - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Vespinae (Hornets & Yellowjackets)
Genus: Vespula
Species: Germanica
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
European (German) Yellowjacket - approx. 2 cm - Lower Don Valley (Crother's Woods) - May 2010
More European Yellowjackets
More European Yellowjackets
Updated January 9 2015
European Hornet - approx. 3 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Subfamily: Vespinae (Hornets & Yellowjackets)
Genus: Vespa
Species: Crabro
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
More European Hornets
More European Hornets
Updated August 23 2017
European Hornet - approx. 3 cm - High Park - August 2017
Subfamily: Vespinae (Hornets & Yellowjackets)
Subfamily: Vespinae (Hornets & Yellowjackets)
Subfamily: Vespinae (Hornets & Yellowjackets)
Subfamily: Vespinae (Hornets & Yellowjackets)
European Paper Wasp - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Polistes
Species: Dominula
More European Paper Wasps
More European Paper Wasps
Updated August 30 2015
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Northern Paper Wasp - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Polistes
Species: Fuscatus
More Northern Paper Wasps
More Northern Paper Wasps
Updated March 22 2013
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
European Paper Wasp on Japanese Knotweed - approx. 2 cm - Lower Don Valley (Crother's Woods) - September 2007
Northern Paper Wasp on Canada Goldenrod - approx. 2 cm - Lower Don Valley (Crother's Woods) - September 2007
Subfamily: Polistinae (Paper Wasps)
Subfamily: Polistinae (Paper Wasps)
Four-toothed Mason Wasp - approx. 2 cm
Order: Hymenoptera (Bees, Wasps, Ants)
Family: Vespidae (Yellowjackets, Hornets & Relatives)
Genus: Monobia
Species: Quadridens
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Subfamily: Eumeninae (Mason & Potter Wasps)
More Four-toothed Mason Wasps
More Four-toothed Mason Wasps
Updated Febriary 11 2019
Four-toothed Mason Wasp on Wild Mint - approx. 2 cm - Toronto Islands - August 2018