Hammerschmidtia Explained

Hammerschmidtia is a Holarctic genus of hoverflies whose larvae live in sap under the bark of freshly fallen trees.^{[1] [2] [3]}

Diagnostics

For terminology see Speight key to genera and glossary The face of the male is tuberculate, with long hairs on the upper and lower sides of the lower three-quarters of the arista. Most of the hairs are several times longer than the arista. The scutum is armed with very evident spines, while the anepisternum, postalar callus, and scutellum have strong bristles. The abdomen is twice as long as the thorax, and the first posterior cell does not end acutely from the apex of the wing. The apical section of R₄₊₅ is longer than the crossvein r-m, and the upper marginal cross-vein M₁ is curved inwards where it meets R₄₊₅. The legs are armed with spines and the anterior four tibiae terminate in a row of bristles. The femora are considerably swollen, especially the hind pair, which has numerous conspicuous spines below. ^[4] Genitalia described by Sedman ^[5]

Species

• Hammerschmidtia ferruginea (Fallén, 1817) ^[6]
• Hammerschmidtia ingrica (Stackelberg, 1952)^[7]
• Hammerschmidtia rufa^[8]
• Hammerschmidtia sedmani (Vockeroth, Moran & Skevington, 2019) ^[9]
• Hammerschmidtia tropia (Chu, 1994)

External links

• Images representing Hammerschmidtia

Notes and References

1. Book: Stubbs, Alan E. . Falk, Steven J . British Hoverflies: An Illustrated Identification Guide . 2nd . 1983 . . London . 1-899935-03-7 . 253, xvpp .
2. Book: Ball, S.G. . Morris, R.K.A. . Provisional atlas of British hoverflies (Diptera, Syrphidae) . 2000 . Biological Record Centre . Monks Wood, UK . 1-870393-54-6 . 167 pages .
3. Book: Van Veen, M.P. . Hoverflies of Northwest Europe, Identification Keys to the Syrphidae . Hardback . 2004 . KNNV Publishing . Utrecht . 90-5011-199-8 . 254 .
4. Book: Vockeroth, J.R. . 1987 . Manual of Nearctic Diptera, Volume 2. . Canada . Research Branch, Agriculture Canada . 668 . 0-660-12125-5 .
5. Sedman . Y.S. . 1961 . Male genitalia in the sub-family Cheilosiinae. Genus Brachyopa . Proceedings of the Entomological Society of Washington . 53-55 .
6. Curran. Howard . 1922 . The Syrphid Genera Hammerschmidtia and Brachyopa In Canada.. . 15. 239–255.
7. Web site: A.V . Barkalov . Syrphidae collection of Siberian Zoological Museum . the Institute of Animal Systematics and Ecology, Siberian Branch of the Russian Academy of Sciences . Novosibirsk, Russia . 28 July 2009 . https://web.archive.org/web/20081020082104/http://szmn.sbras.ru/Diptera/Syrphidae.htm . October 20, 2008.
8. Book: Skevington, Jeffrey H . 2019 . Field Guide to the Flower Flies of Northeastern North America. . 9780691189406 .
9. Skevington . Jeffrey . 2019 . New Syrphidae (Diptera) of North-eastern North America . biodiversity Data Journal .