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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Flies (Diptera) » "Aschiza" » Hover Flies (Syrphidae) » Eristalinae » Eristalini » Helophilina » Helophilus » Helophilus fasciatus
Photo#1595213
Syrphid with Striped Thorax - Helophilus fasciatus - male
Copyright © 2018 Nick Wiser

Syrphid with Striped Thorax - Helophilus fasciatus - Male
Eugene, Lane County, Oregon, USA
September 22, 2018
Found at the park on an Aster, next to some Black-eyed Susans and Lavender. It was overcast, and within seconds of finding it, rain started to fall.

Going by the eye gap, I believe it to be a female.

Images of this individual: tag all
Syrphid with Striped Thorax - Helophilus fasciatus - male Syrphid with Striped Thorax - Helophilus fasciatus - male
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Contributed by Nick Wiser on 23 September, 2018 - 10:51pm
Last updated 24 September, 2018 - 7:13am

Moved
Moved from Syrphid Flies.
… Nick Wiser, 24 September, 2018 - 7:13am login or register to post comments

Helophilus fasciatus .... male
Helophilus fasciatus .... male.
In Helophilus both sexes are dichoptic (eyes separated on frons). In the male, the inner margins of eyes are more or less parallel for a long distance whilst the female widens almost immediately from base. Also look at the genital capsule in the other image.
The reddish first two segments of antennae separate this to fasciatus.
… Bill Dean, 24 September, 2018 - 4:50am login or register to post comments

Moved
Moved from ID Request.
… Ken Wolgemuth, 23 September, 2018 - 11:20pm login or register to post comments

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