Thread subject: Diptera.info :: Eristalis arbustorum (with some doubts!)
Posted by valter on 06-10-2007 09:16
#1
Location: Faro, south of Portugal
Date Photo taken: October 5, 2007
Edited by valter on 27-10-2010 17:43
Posted by Kahis on 06-10-2007 09:20
#2
It is an
Eristalis
Posted by valter on 06-10-2007 09:25
#3
Eristalis arbustorum ???
Edited by valter on 06-10-2007 10:29
Posted by Susan R Walter on 06-10-2007 14:57
#4
Or
E abusivus? Need a clearer view of the aristae (long pale hairs in
arbustorum, virtually bare in
abusivus).
Posted by valter on 06-10-2007 15:48
#5
And Now?
Posted by Susan R Walter on 06-10-2007 23:00
#6
Still can't see the aristae well enough.
Posted by Gerard Pennards on 08-10-2007 21:47
#7
I think arbustorum! :D
Greetings
Posted by valter on 08-10-2007 23:23
#8
An Expert in Syrphidae said that is: Eristalis horticola, female
Posted by Gerard Pennards on 09-10-2007 12:49
#9
Well, I normally don't disagree with experts :D, but in this case I do!
I still think this is arbustorum or abusiva, because there is no dark marking in the wing (which horticola (nowadays called Eristalis lineata!) normally has, especially the female.
Furthermore the face doesn't seem to have a black stripe, which a female E. lineata has. If it would have had a black stripe, one could probably have seen part of it!
Third thing is that lineata would normally be more orange colored on the spots!
But still, we could all be wrong, if the specimen is different from the normal form, which sometimes occurs. If you would have a facial shot whether it has a black stripe or not, we would be certain!
greetings,
Posted by Paul Beuk on 09-10-2007 14:18
#10
Based on the spot-like pterostogma and the somewhat swollen hind metatarsi I would say
E. nemorum (= [i]interrupta,
sylvarum).
Posted by Andre on 09-10-2007 16:16
#11
It's Eristalis arbustorum, like Pennards suggested. The spots on the abdomen are too large for nemorum (= interrupta) and the stigma on the wing is 2-coloured... The face looks all haired too. It's a typical male arbustorum. Abusivus would have been nice (as a new species for P!), but it misses the characteristic metalic glance on the abdomen. It's defenitely not horticola (= lineata), for some obvious reasons ;)
Posted by Tony Irwin on 09-10-2007 20:14
#12
Andre wrote:
It's a typical male arbustorum.
not a typical female? ;)