Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Triarthria setipennis

The Finished Product - Triarthria setipennis - male Tachinid Fly? - Triarthria setipennis tachinid fly - Triarthria setipennis tachinid - Triarthria setipennis Small gray tachinid - Triarthria setipennis Triarthria setipennis? - Triarthria setipennis Triarthria setipennis? - Triarthria setipennis Tachinid Fly - Triarthria setipennis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Tachinidae (Parasitic Flies)
Subfamily Tachininae
Tribe Bigonichetini
Genus Triarthria
Species setipennis (Triarthria setipennis)
Synonyms and other taxonomic changes
Tachina setipennis Fallén, 1810
Tachina spinipennis Meigen, 1824
Explanation of Names
Possibly named after the rows of bristles along veins R1 and R4+5.
Arista with three nearly equal segments (see Manual of Nearctic Diptera page 1231 figure 132). Face with downcurved bristles well separated from frontal bristles. Vein M with obtuse bend similar to Siphonini. R1 and R4+5 hairy along most of length. Antenna sometimes orange near insertion of arista. Abdomen with discal and marginal bristles on tergites 3-5, none on tergite 1+2.
Introduced to Portland, Oregon in the 1920s to control the European earwig Forficula auricularia. Widespread in northern USA and southern Canada.
Print References
Mote, Don C. 1931. The introduction of the Tachinid parasites of the European earwig in Oregon. Journal of Economic Entomology 24:948-956
Internet References
Canadian Entomologist. Biology of Triarthria setipennis (Fallen) (Diptera: Tachinidae), a native parasitoid of the European earwig, Forficula auricularia L. (Dermaptera: Forficulidae), in Europe
Biocontrol Science and Technology. Biology and host range testing of Triarthria setipennis and Ocytata pallipes (Diptera: Tachinidae) for the control of the European earwig (Forficula auricularia)