susie acott's picture

Hoverfly on a Dog Rose

Observed: 4th June 2011 By: susie acott
S159 Neighbourhood Nature - course complete
susie acott’s reputation in Invertebratessusie acott’s reputation in Invertebrates
Hoverfly on a Dog Rose
Description:

Several were seen in this hedgerow particularly on the Cow Parsley and dog Rose.

Identifications
Species interactions

No interactions present.

Comments

susie acott's picture

comments

Many thanks for your expertise on many of my observations. As I am new to this subject you provide very helpful information. However I couldn't understand your comments on my Scorpion fly.
Thank you once again.

Susie

ophrys's picture

Scorpion fly

If that was the one on a thistle, then the point was that you can only identify these from a picture from above. Your picture was from the side.

Scorpion flies can only be identified if they are a male, with a 'sting'. Males hold their genital capsule up, forward, above their body. That exposes the ventral side, which happens to hold the differentiating signs.

[Females cannot de done without dissection]

A good place to check this out is...

http://thetopshamnaturalist.blogspot.com/search/label/scorpion%20fly

The Topsham Naturalist...an interesting site, which hopefully will be picked up again soon.

susie acott's picture

scorpian fly

Many thanks, a much kinder reply from you and I will look on the website you suggested and study the information you provided. Nice to have a mentor at my amateur stage!!