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Genus Xylophagus

Large fly - Xylophagus decorus - female Xylophagid - Xylophagus Xylophagidae, larval exuviae - Xylophagus another Xylophagus? - Xylophagus reflectens Xylophagus Xylophagus Fluorescent Xylophagidae Larva 2 - Xylophagus puzzling larva - Xylophagus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Xylophagidae
Genus Xylophagus
Explanation of Names
Xylophagus Meigen 1803
7 spp. in our area in 2 subgenera, 24 total(1)(2)
key to NA species:
1. Scape < 3X length of pedicel (2)(subgenus Xylophagus)
Scape > 3X length of pedicel (5)(subgenus Archimyia)
2. Frons/Occiput enitrely pruinose (3)
Glossy band dorsal of antennae (4)
3. Metacoxa w/ anteromedial tubercle; Northeast X. nitidis
Metacoxa w/o anteromedial tubercle; West Coast to Alaska X. gracilis
4. Sternopleuron/Hypopleuron glossy; abdomen entirely black in both sexes; Eastern X. lugens
Sternopleuron/Hypopleuron w/ pruinosity; basal portion of abdomen orange in female; Widespread X. cinctus
5. Frons/Occiput glossy; Boreal/Northeast/Colorado X. fulgidus
Frons pruinose (6)
6. Pedicel 1.5X ocellar distance; Eastern X. reflectens
Pedicel < 1.5X ocellar distance; West Coast X. decorus
holarctic; across NA(1)
Works Cited
1.A catalog of the World Xylophagidae (Insecta: Diptera)
Woodley N.E. 2011. Myia 12: 455–500.
2.A Revision of the Nearctic Species of Xylophagus (Diptera: Xylophagidae)
Webb, D.W. 1979. Journal of the Kansas Entomological Society Vol. 52, No. 3, pp. 489-523.