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Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

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Family Xylophagidae

Xylophagid? - Rachicerus fulvicollis - female Xylophagid pupa Fly being Eaten - Rachicerus obscuripennis Rachicerus - Rachicerus obscuripennis - female Large reddish fly - Coenomyia ferruginea - female Unknown fly - Rachicerus fly060918a - Dialysis awl fly - Dialysis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Xylophagidae
Explanation of Names
Xylophagidae Fallén 1810
Numbers
28 spp. in 6 genera in our area(1), ~150 spp. in 15 genera total(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)(5); 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.Order Diptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Pape T., Blagoderov V., Mostovski M.B. 2011. Zootaxa 3148: 222–229.
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.
5.A catalog of the World Xylophagidae (Insecta: Diptera)
Woodley N.E. 2011. Myia 12: 455–500.