Syrphid sp. - Eristalis anthophorina

Moved

… Even Dankowicz, 17 February, 2021 - 3:02pm

I`ve had a second look at this. Long white hairs on frons and face; hind tibia somewhat flattened; long hairs on scutellum; wings with some central infusation, especially from pterostigma to the fork of R2+3 and R4+5 on to bm-cu vein. Also the r-m vein is infuscated.
The longest white hairs on the abdomen on side margins of tergite 3 and even slightly longer than tergite 3 on tergite 4 and tergite 5.
All tarsi black.

… Bill Dean, 27 August, 2016 - 8:26pm

This is not E. arbustorum bec

This is not E. arbustorum because it has a quite broad facial stripe, because the hind metatarsus is not inflated, because arbustorum doesn`t have dark wing markings like this and doesn`t have very long pale hairs on the scutellum.
The Eristalis pictorial key on BugGuide divides specimens into bee-like and bumble-bee like which can be subjective but none of the bee-like specimens have very long scutellar hairs like this and this is a reliable feature to separate bee-like from bumble-bee like.
The bumble-bee like specimens are limited to four specimens. This is not flavipes which has orange hind tarsi, swollen hind femora and flattened and expanded hind tibiae. Not fratercula which has thick pile on the dorsal surface of the abdomen and lacking the orange markings and not ostracea which is totally different. This only leaves anthophorina.
Eristalis anthophorina is a very variable fly ( Just look at the pictures on BugGuide ). The broad white band on the hind tibia seems to be limited to west coast and Massachusettes specimens. Eristalis anthophorina may comprise more than one species but as it stands at the moment this specimen can only be either new or anthophorina. There are many features other than the very long scutellar hairs which exclude this fly from being any other North American Eristalis which anyone may proffer.
This fly is staying in The Subgenus Eoseristalis, as a consensus has not been reached, until more time and more study can be applied.

… Bill Dean, 24 June, 2016 - 7:05am

This one is bugging me.... I

This one is bugging me.... I agree with Bill, that it is not arbustorum and that it likely belongs to the bumble-bee like flies (which is not the best couplet, but normally it works well). The red markings on the abdomen look so unlike the bumble-bee like species, but on the other hand, very few species have markings on the 3rd tergite.... and it has a dark midband on the wing... very confusing... and very interesting... I wish we would have this specimen collected, than I could say more...

… Martin Hauser, 24 June, 2016 - 11:02am

Moved

Moved from Eristalis arbustorum.

… Martin Hauser, 22 June, 2016 - 1:54pm

Moved

Moved from Eristalis anthophorina.

… Martin Hauser, 22 June, 2016 - 10:14am

Moved

Moved from Syrphid Flies.

… Ken Wolgemuth, 24 May, 2016 - 4:50am

Moved

Moved from ID Request.

… Ken Wolgemuth, 23 May, 2016 - 5:00pm