Sphecomyiella valida, copyright Carl Barrentine.

Belongs within: Tephritoidea.

The Pyrgotidae are a group of flies whose larvae are endoparasites of adult scarabaeid beetles. They may be divided between the subfamilies Pyrgotinae, in which sternites 1 and 2 are fused into a synsternite, and the Neotropical Teretrurinae, in which these sternites remain free (Hernández-Ortiz 2010). Within Pyrgotinae, members of the tribe Pyrgotini are characterised by the absence of setulae on the epandrium and lateral surstylus.

Characters (from Hernández-Ortiz 2010): Medium to large-sized flies (body length 5–30 mm), body usually robust with long legs, wing pattern often spotted, banded or reticulated, rarely hyaline. Head spherical with frons large, antennal bases projecting anteriorly, pedicel elongate; arista setiform; ocelli often absent; frons weakly depressed, frontal bristles and vibrissa absent, face broad with deep antennal grooves; mouthparts of moderate size. Scutum mostly bare, setulose, or distinctly haired, sometimes black spotted, major bristles relatively short; scutellum short and broad with one to four pairs of marginal bristles. Legs long in both sexes, frequently without strong bristles, but covered in short setulae; hind tibia tapering to base or with strong constriction in basal third or near midlength. Wing with or without subcostal break, C weakening after vein R4+5; Sc complete to C or disappearing close to C; R1 dorsally setulose; R2+3 sometimes with stump vein at apical third; cell cup closed by CuA2 usually forming acute angle in lower apical corner, sometimes short. Preabdomen elongate, robust, more or less petiolate; lateral membrane broad; syntergite 1+2 elongate, usually with several long hairs on lateral sides near base. Female terminalia with syntergosternite 7 robust and strong basally forming conical tube turned ventrally, sometimes longer than rest of abdominal length. Apical margin of syntergosternite 7 sometimes provided with ventral hook-like sclerite or two apicolateral claw-like sclerites; aculeus usually shorter than length of syntergosternite 7. Male terminalia with epandrium globose, curved ventrally; lateral surstyli usually short and robust basally, medial surstyli without prensisetae developed; aedeagus coiled and elongated; glans more or less developed, sometimes partially sclerotised.

    |--Teretrurinae [Teretrurini]H-O10
    |    |--PyrgotosomaH-O10
    |    `--TeretruraH-O10
         |--Descoleia [Toxurinae, Toxurini]H-O10
         |    `--D. teretruraH-O10
              |--Anapyrgota persontaH-O10
              |--Idiopyrgota setiventrisH-O10
              |--Pyrgotella chagnoniS87
              |    |--B. dichaetusH-O10
              |    `--B. shewelliS87
              |    |--N. majorH-O10
              |    `--N. piceaH-O10
              |    |--S. crassitibiaH-O10
              |    `--S. mexicanaH-O10
              |    |--P. longipesH-O10
              |    |--P. lugensH-O10
              |    `--P. undataH-O10
              |    |--L. albitarsisH-O10
              |    |--L. amplipennisH-O10
              |    `--L. undulataH-O10
              `--Sphecomyiella [incl. Stirothrinax]H-O10
                   |--S. cribrata [=Stirothrinax cribratus]H-O10
                   |--S. knudseni [=Stirothrinax knudseni]H-O10
                   `--S. validaH-O10
Pyrgotidae incertae sedis:
  Cardiacera miliaceaWT11
  Maenomenus ensiferH-O10
  Peltodasia flavisetaH-O10
    |--A. aequalisO98
    `--A. illingworthanaCM91
  Campylocera robustaO98
  Epice setifemurO98

*Type species of generic name indicated


[CM74] Colless, D. H., & D. K. McAlpine. 1974. Diptera (flies). In: CSIRO. The Insects of Australia: A textbook for students and research workers. Supplement 1974 pp. 91–96. Melbourne University Press.

[CM91] Colless, D. H., & D. K. McAlpine. 1991. Diptera (flies). In: CSIRO. The Insects of Australia: A textbook for students and research workers 2nd ed. vol. 2 pp. 717–786. Melbourne University Press: Carlton (Victoria).

[H-O10] Hernández-Ortiz, V. 2010. Pyrgotidae (pyrgotid flies). In: Brown, B. V., A. Borkent, J. M. Cumming, D. M. Wood, N. E. Woodley & M. A. Zumbado (eds) Manual of Central American Diptera vol. 2 pp. 955–961. NRC Research Press: Ottawa.

[K10] Korneyev, V. A. 2010. Ctenostylidae (ctenostylid flies). In: Brown, B. V., A. Borkent, J. M. Cumming, D. M. Wood, N. E. Woodley & M. A. Zumbado (eds) Manual of Central American Diptera vol. 2 pp. 963–969. NRC Research Press: Ottawa.

[O98] Oosterbroek, P. 1998. The Families of Diptera of the Malay Archipelago. Brill: Leiden.

[S87] Steyskal, G. C. 1987. Pyrgotidae. In: McAlpine, J. F. (ed.) Manual of Nearctic Diptera vol. 2 pp. 813–816. Research Branch, Agriculture Canada.

[WT11] Wiegmann, B. M., M. D. Trautwein, I. S. Winkler, N. B. Barr, J.-W. Kim, C. Lambkin, M. A. Bertone, B. K. Cassel, K. M. Bayless, A. M. Heimberg, B. M. Wheeler, K. J. Peterson, T. Pape, B. J. Sinclair, J. H. Skevington, V. Blagoderov, J. Caravas, S. N. Kutty, U. Schmidt-Ott, G. E. Kampmeier, F. C. Thompson, D. A. Grimaldi, A. T. Beckenbach, G. W. Courtney, M. Friedrich, R. Meier & D. K. Yeates. 2011. Episodic radiations in the fly tree of life. Proceedings of the National Academy of Sciences of the USA 108 (14): 5690–5695.

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