Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Muscidae: Helina quadrum
|
|
| Liancalus |
Posted on 22-12-2013 14:00
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
8.2mm, damp grassland, eastern England, July 2012. Unfortunately rather greasy. In Gregor: Scutellum bare beneath 4 postdc Anterodorsal seta on T3 < hind basitarsus Femora black, apically paler Pre-alar shorter than posterior np Crossveins not infuscated F3 without pv T1 with 2 posterior setae F3 with 4 distal av but no proximal avs Helina quadrum? Dusted longitudinal stripes outside the postdc, not sure if yellowish or whitish, genitalia match, no illustration of ciliata though? Calypter more whitish than yellowish. In Fonseca: Hyopleuron bare Rc node bare Eyes < 2.5x width of flagellomere apart T3 1 pd Prealar < posterior np F mainly dark T2+T3 reddish yellow Pre-alar distinct, no F3 pvs T3 with 1 weak pd 1/4 from base. Liancalus attached the following image:  [71.02Kb] Edited by Liancalus on 23-12-2013 00:06 |
|
|
|
| Liancalus |
Posted on 22-12-2013 14:00
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
Dorsal
Liancalus attached the following image:  [44.83Kb] |
|
|
|
| Liancalus |
Posted on 22-12-2013 14:01
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
Cercal plate 
Liancalus attached the following image:  [11.43Kb] |
|
|
|
| Liancalus |
Posted on 22-12-2013 14:01
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
Genitalia lateral
Liancalus attached the following image:  [12.1Kb] |
|
|
|
| Stephane Lebrun |
Posted on 22-12-2013 17:24
|
 Member Location: Le Havre, France Posts: 8248 Joined: 03.03.07 |
Seems OK to me. 
Stephane. |
|
|
|
| Liancalus |
Posted on 23-12-2013 00:05
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
Thanks Stephane. One of the rare occasions for me when one of these keys readily. No doubt the next specimen will be back to the drawing board! |
|
|
|
| oceanlis2000 |
Posted on 24-12-2013 10:46
|
|
Member Location: Wales, UK Posts: 570 Joined: 15.06.10 |
Helina quadrum Tibia 1 yellow – looks ok from the photo Are there spots on tergites 3 and 4?, a shot of the abdomen would be really good for the gallery I agree with Stephane on the ID Dr Elisabeth A. Harris @FloraConsUK |
|
|
|
| Liancalus |
Posted on 24-12-2013 23:30
|
|
Member Location: Posts: 120 Joined: 07.12.13 |
Hello Elisabeth T1 coloured as T2 + T3 Abdomden greasy so appearance is misleading. Suspect unspotted? But quite impossible to be sure. |
|
|
|
| Jump to Forum: |
