Thread subject: Diptera.info :: Suillia Netherlands

Posted by nielsyese on 23-10-2025 19:36
#1

Hello, this Suillia was collected the 20th of August 2022 in Ede, the Netherlands, in a muddy area.
I took a lot of pictures and placed them here: https://waarnemin...377384018/

Trying to ID it, with this online key based on Withers (1987) I would arrive at Suillia imberbis.
https://dipterists.org.uk/sites/default/files/scheme-files/Withers%20illustrated%20key%202024.pdf

I was not sure if there was a broad or small median area on the scutellum bare. So I prepared the genitalia to make a conclusion but it did not help me out, because:
- The left and right surstylus seem to fit S. laevifrons
- The aedeagus seems to be different from the drawing of laevifrons.

Can somebody help?
(first picture is the right surstylus)

Edited by nielsyese on 23-10-2025 19:48

Posted by nielsyese on 23-10-2025 19:36
#2

Left surstylus

Edited by nielsyese on 23-10-2025 19:47

Posted by nielsyese on 23-10-2025 19:36
#3

Aedeagus

Posted by nielsyese on 25-10-2025 16:38
#4

My picture of the aedeagus seems similar to this one here, identified as Suillia laevifrons: https://www.spessart-fliegen.de/diptera/heleomyzidae/suillia/suillia_laevifrons/suillia_laevifrons.html

However, it looks different from Withers (1987). See the drawings of Withers (1987) in the attachment.

Or am I wrong and is my picture not the aedeagus?