Diptera.info - Discussion Forum: Helophilus from 11.04.11 --> H. pendulus

Diptera.info :: Family forums :: Syrphidae

Helophilus from 11.04.11 --> H. pendulus
Juergen Peters	#1 Posted on 16-04-2011 20:07
Member Location: northwest Germany Posts: 14355 Joined: 11.09.04	Hello! Last Monday at sloe hedge (northwest Germany), about 10 mm. Is this Helophilus pendulus? Juergen Peters attached the following image: [36.46Kb] Edited by Juergen Peters on 17-04-2011 21:50 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


PIERRE MILLE	#2 Posted on 17-04-2011 15:15
Member Location: FRANCE (Conflans Ste Honorine -Yvelines) Posts: 72 Joined: 12.12.09	Hello Peters, The ideal is that you present a picture of the thorax and one to see if. Best wishes PIERRE http://cyrille.du...orange.fr/ http://www.hoverf...portal.php


PIERRE MILLE	#3 Posted on 17-04-2011 15:18
Member Location: FRANCE (Conflans Ste Honorine -Yvelines) Posts: 72 Joined: 12.12.09	I wrote too soon I'm sorry to see the longitudinal stripes on the thorax and the grounds on tergites PIERRE http://cyrille.du...orange.fr/ http://www.hoverf...portal.php


Juergen Peters	#4 Posted on 17-04-2011 18:30
Member Location: northwest Germany Posts: 14355 Joined: 11.09.04	Hello, Pierre! PIERRE MILLE wrote: The ideal is that you present a picture of the thorax and one to see if. Thanks, but the animals do not always give me a chance tp get one... . I was happy to get two pictures at all from my first Helophilus this year. Below the second one. Juergen Peters attached the following image: [34.12Kb] Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


John Carr	#5 Posted on 17-04-2011 19:14
Super Administrator Location: Colorado, USA Posts: 10552 Joined: 22.10.10	I think this is not Helophilus but another Eristalini. In North America Helophilus always has a broad stigma (vs. narrow in Parhelophilus and Lejops), and I haven't heard that this character is any different in Europe.


Juergen Peters	#6 Posted on 17-04-2011 19:37
Member Location: northwest Germany Posts: 14355 Joined: 11.09.04	Hello, John! John Carr wrote: I think this is not Helophilus but another Eristalini. In North America Helophilus always has a broad stigma (vs. narrow in Parhelophilus and Lejops), and I haven't heard that this character is any different in Europe. Hmm... I had one Parhelophilus here many years ago, but 99,99% of those flies are Helophilus (and 99% of them either pendulus or trivittatus). I would be glad, if this would be not the case here... Edited by Juergen Peters on 17-04-2011 19:39 Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


Gerard Pennards	#7 Posted on 17-04-2011 21:20
Member Location: Amersfoort Posts: 1914 Joined: 07.06.04	Helophilus pendulus it is..... Greetings, Gerard Pennards


Juergen Peters	#8 Posted on 17-04-2011 21:50
Member Location: northwest Germany Posts: 14355 Joined: 11.09.04	Gerard Pennards wrote: Helophilus pendulus it is..... Thank you, Gerard! Best regards, Jürgen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Juergen Peters Borgholzhausen, Germany WWW: http://insektenfo... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=


John Carr	#9 Posted on 18-04-2011 01:39
Super Administrator Location: Colorado, USA Posts: 10552 Joined: 22.10.10	Manual of Nearctic Diptera distinguishes Helophilus from similar genera with Pterostigma elongate, not simulating a crossvein, at most slightly darkened basally. Abdomen oval, with large orange markings on at least tergite 2... Helophilus Meigen Pterostigma very short, simulating a crossvein. Abdomen oval to slender, variable in color... 111 Couplet 111 et seq. distinguish Parhelophilus and Lejops. This fly has a crossvein-like pterostigma and would not key to Helophilus in MND. What character is used to distinguish European Eristalini with striped thorax?