Thread subject: Diptera.info :: Ellipteroides alboscutellata ?
Posted by atylotus on 09-09-2013 10:50
#1
Dear all
A few larvae of this strange looking Eriopterinae were found by a co-worker in a spring near Ulestraten in the southern part of the province of Limburg in The Netherlands on 6.iv.2011 (50.53'57" N, 5.46'21" E). To me it looks like some species of Ellipteroides or Gonomyia, but the literature on these larval species seems non-consistant, i.e. there are some differences. in Ellipteroides the anal lobes are distinct while in Gonomyia the lobes apparently are less protruding. So this appears as an Ellipteroides sp. and E. alboscutellata seems the more likely species. However, the lobes, especially the lateral, as drawn in Savchenko (1982) are not as protruding as in my specimens unlike the drawing in Bangerter (1920) were the lateral lobes are about the same as mine.
In our larvae there are no ventral pseudopods, the dorsal anal lobe is distinctly shorter and slightly pigmented, the lateral lobes are fully pigmented and the ventral lobes are divided.
Any idea?
Edited by atylotus on 09-09-2013 10:53
Posted by atylotus on 09-09-2013 10:51
#2
anal segment in dorsal view
Posted by atylotus on 09-09-2013 10:52
#3
and anal segment showing the (characteristic?) pigmentation and reduced fifth dorsal lobe.
Edited by atylotus on 09-09-2013 10:52
Posted by Tony Irwin on 09-09-2013 16:23
#4
That sheep looks very worried!
Posted by atylotus on 10-09-2013 11:08
#5
well, this scottish black sheep has just become infected by a short-palped-crane-fly.....;)
Posted by atylotus on 11-09-2013 11:59
#6
Dear Jozef
that book I forgot. I have it as PDF, but forgot to check. However, their drawing nr. 15 (and 16) is exactly the same as from Bangerter (1930 and 1920 resp.). I really think that I have alboscut. but I'm a bit confused about the drawing in Podeniene (2003)/Savchenko (1982) (see below) in which the lateral lobes seems to be less protruding (c=lateralis; d= alboscutellatus). The Bangerter drawings, although poorer in quality, are more realistic in my opinion.
Edited by atylotus on 11-09-2013 12:03
Posted by Jozef Obona on 11-09-2013 12:23
#7
Dear Atylotus
Then Ellipteroides sp. :-)
Limoniidae larvae are quite difficult to ID.
Are any differences in head capsules between these species ?
Posted by atylotus on 12-09-2013 08:59
#8
There is supposed to be a difference in the mandibular teeth. I haven't checked this. In other Limoniid larvae the mandibular teeth are good stable characters, so I will try to look at this.