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

See Moth submissions from National Moth Week 2023

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

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 Tabanus punctifer - Western Horse Fly

black and white fly - Tabanus punctifer - female which Horse Fly? - Tabanus punctifer - female Western Horse Fly - Tabanus punctifer - male This one's for Tony T. (Hope the next one is better!) - Tabanus punctifer - female HUGE FLY OR BEE [not a bumble] - Tabanus punctifer - male Tabanus? - Tabanus punctifer - male Tabanus punctifer -- Western Horse Fly - Tabanus punctifer - female Tabanus punctifer - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Infraorder Tabanomorpha
Family Tabanidae (Horse and Deer Flies)
Subfamily Tabaninae (Horse Flies)
Tribe Tabanini
Genus Tabanus
Species punctifer (Western Horse Fly)
Synonyms and other taxonomic changes
Tabanus punctifer Osten Sacken 1876
Explanation of Names
PUNCTIFER = Latin punctum (a point or dot) + -ifer (-carrying, -bringing)
♀ 19-22 mm
Female: mesonotum covered with creamy hair over a dark reddish background: remainder of thorax dark brown, with concolorous hair: wings brown, paler posteriorly, the cross-veins and furcation distinctly margined with brown; legs black, except basal third of fore tibiae, which are creamy white with long white hair; abdomen black.(1)
Male: Color as in female except that the white of the mesothorax is confined to a lateral band and the outer margin of the scutellum.(1)
BC-CA to KS-TX; Mexico (1)(2)
In CA, from the second week of March through October (one record in late November) (1)
Life Cycle
Egg mass; larva; female laying eggs; adult male:
Internet References
Works Cited
1.Adult and immature Tabanidae (Diptera) of California
Middlekauff, W. W. and R. S. Lane. 1980. University of California Press.