Geron, possibly G. calvus, copyright Chris Hartley.

Belongs within: Bombyliidae.

The Toxophorinae are a group of slender bee flies with a more or less humped thorax. In the genus Toxophora, the pronotum is well developed and strongly bristled, and the proboscis is at most as long as the head. Members of the genera Systropus and Geron have a small pronotum, lacking bristles, and an elongate proboscis, longer than the head (Greathead et al. 2009).

<==Toxophorinae [Systropinae] GEEL09
    |--Dolichomyia gracilis H81
    |--Toxophora [Toxophorini] GEEL09
    |    |--T. amphitea KME08
    |    |--T. varipennis GEEL09
    |    `--T. virgata GEEL09
    |--Systropus [Systropodini] GEEL09
    |    |--S. acutus GEEL09
    |    |--S. columbianus GEEL09
    |    |--S. flavoornatus CM91
    |    |--S. macer KME08
    |    `--S. rogersi GEEL09
    `--Geron [Geroninae, Gerontini] GEEL09
         |  i. s.: G. albarius H81
         |         G. holosericeus GEEL09
         |         G. rufipes GEEL09
         |--G. (Geron) KME08
         |    |--G. (G.) prosopidis KME08
         |    `--G. (G.) vitripennis KME08
         `--G. (Empidigeron) calvus KME08

*Type species of generic name indicated


[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).

[GEEL09] Greathead, D. J., N. L. Evenhuis & C. J. Einicker Lamas. 2009. Bombyliidae (bee 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. 1 pp. 565–576. NRC Research Press: Ottawa.

[H81] Hall, J. C. 1981. Bombyliidae. In: McAlpine, J. F., B. V. Peterson, G. E. Shewell, H. J. Teskey, J. R. Vockeroth & D. S. Wood (eds) Manual of Nearctic Diptera vol. 1 pp. 589–602. Research Branch, Agriculture Canada.

[KME08] Kits, J. H., S. A. Marshall & N. L. Evenhuis. 2008. The bee flies (Diptera: Bombyliidae) of Ontario, with a key to the species of eastern Canada. Canadian Journal of Arthropod Identification 6: 1–52.

Last updated: 9 January 2021.

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