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Family Xylophagidae

pointy-end underbark larvae - Xylophagus Fly ID - Dialysis rufithorax - male Fly - Xylophagus Not sure . . . . - Rachicerus honestus large orange fly - Coenomyia ferruginea fly - Xylophagus lugens Xylophagus lugens? - Xylophagus cinctus - male fly - Dialysis elongata - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Xylophagidae
Numbers
28 spp. in 6 genera in our area(1), >10 spp. in 9 genera worldwide(2)
Size
2-25 mm(1)
Identification
Slender-bodied without prominent hair. Usually black, but sometimes marked with yellow, or nearly all yellow (1). Facial orbits and cheeks not sutured (3). Calypters (lobes on base of wing along trailing edge) small or absent. Third antennal segment is elongated, execept in Rachicerus, where the antennae appear to have many segments. M3 cell of wing (see references) open(4).
Wing venation:
Range
much of the world (none in the Afrotropical Region)(2); mostly northern NA(1)
Habitat
Typically woodlands; larvae on decaying vegetation, under bark, or in decaying wood(1)
Food
Adults sometimes take nectar and other fluids(1)
Life Cycle
Larvae scavengers or predators(1). Xylophagus larvae may prey on bark beetle larvae
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.A catalog of the World Xylophagidae (Insecta: Diptera)
Woodley N.E. 2011. Myia 12: 455–500.
3.Field Book of Insects of the United States and Canada, Aiming to Answer Common Questions,
Frank Eugene Lutz. 1935. Putnam Pub Group.
4.A Field Guide to Insects
Richard E. White, Donald J. Borror, Roger Tory Peterson. 1998. Houghton Mifflin Co.