Diptera. Syrphidae. - Melangyna

Moved

… Kelsey J.R.P. Byers, 10 February, 2020 - 5:26am

The spots on tergite 2 are sm

The spots on tergite 2 are small for typical umbellatarum. They are very difficult, even with specimens. Any idea what M. coei looks like?
The black spot on scutellum is restricted to basal corner as in umbellatarum.

… Bill Dean, 4 July, 2018 - 6:09am

Vockeroth gives coei as with

Vockeroth gives coei as with haired eyes, entirely trichose wing, legs dark brown to black with fore/mid tibiae reddish, yellow spots of T2 large but subquadrate. In his maps coei is also restricted to western Alberta, British Columbia, the Yukon, and eastern Alaska.

… Kelsey J.R.P. Byers, 4 July, 2018 - 1:11pm

Thanks Kelsey.

Thanks Kelsey; I am only confident to Melangyna.
Melangyna umbellatarum has the thorax strongly shiny.

… Bill Dean, 4 July, 2018 - 5:24pm

Moved

Moved from Syrphid Flies.

Keyed with Vockeroth 1992. Not Meligramma as face has medial stripe (Vockeroth notes this on p.149), posterior margin of spots is straight vs oblique in Meligramma.

Melangyna umbellatarum has the wing extensively bare, as in this fly. The only other option is Melangyna labiatarum (other species are out of range or have obviously haired eyes), but that has entirely trichose wings, tibiae basally paler (vs apically in this fly and in umbellatarum), tergite margins often reaching the lateral margins (vs not in this fly and generally not in umbellatarum).

Merci por votre contribution! Ce Syrphidae est Melangyna umbellatarum; il y a un cle en francais en Vockeroth 1992 (disponible ici: http://esc-sec.ca/wp/wp-content/uploads/2017/03/AAFC_insects_and_arachnids_part_18.pdf), mais le majorite de ce livre est en anglais. Je suis desolee, j n'ai pas les mots entomologiques por traducir mes comments d'identite en francais :^(

… Kelsey J.R.P. Byers, 3 July, 2018 - 6:48pm

Melangyna

Kelsey J.R.P. Byers,

Merci pour l'identification et les informations, C'est apprécié.

… Leo-Guy de Repentigny, 3 July, 2018 - 7:21pm

Moved

Moved from ID Request.

… Ken Wolgemuth, 3 July, 2018 - 6:24pm