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For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Discussion of 2018 gathering

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

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Xylomya

Xylomya - Xylomya tenthredinoides Xylomya - Xylomya tenthredinoides - male - female 3003049 - Xylomya pallidifemur Wasp Mimic Fly - Xylomya tenthredinoides Xylomya terminalis? - Xylomya terminalis unknown fly June 6 - Xylomya Unknown wasp  - Xylomya americana Fly - Xylomya tenthredinoides
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Infraorder Stratiomyomorpha
Family Xylomyidae
Genus Xylomya
Explanation of Names
Xylomya Rondani 1861
7 spp. in our area, 36 spp. worldwide(1)
Martin Hauser,
X. americana = only species with two longitudinal yellow stripes on thorax
X. aterrimus = only species with black palpi
X. fasciata = likely a Xylophagus (wings maculate), Say accidentally destroyed the specimen
X. parens = only species in the west and only species with black scutellum
X. pallidifemur = red legs and white hind basitarsus

Quick key
1. Scutellum black.... X. parens
Scutellum with yellow....2
2. thorax with yellow longitudinal stripes... X. americana
markings on thorax do not form stripes....3
3. tip of metafemur deep black.....5
tip of metafemur red brown or yellow....4
4. metafemur darker (brown) at apex, yellow at base; metatibial tip darker than base; metatarsus yellow.... X. simillima
meatfemur all reddish yellow, metatarsus white.... X. pallidifemur
5. palpi black.... X. aterrima
palpi yellow....6
6. terminalia black, tergites 3-4 yellowish.... X. terminalis (ne.US)
terminalia red, tergites red brown.... X. tenthredinoides
Eurasia (2/3 of the spp.) & the New World(1)
Works Cited
1.A catalog of the World Xylomyidae (Insecta: Diptera)
Woodley N.E. 2011. Myia 12: 417–453.