Thread subject: Diptera.info :: Nematocera (yellow-black and white) - Cricotopus tricinctus or trifasciatus

Posted by ebbek on 27-06-2023 18:45
#1

Any ideas about this nice nematocera? From a light-trap in SW Sweden 20 june.

Regards

Krister

Edited by ebbek on 28-06-2023 12:33

Posted by kuv on 27-06-2023 21:03
#2

Look to me like Cricotopus tricinctus (Chironomidae), female - but I'm not an expert.
Greetings Kuv

Posted by ebbek on 27-06-2023 21:14
#3

Thanks a lot - Cricotopus seems to be a good choice! But maybe it is C. trifasciatus instead?

Grettings

Krister

Posted by John Carr on 27-06-2023 23:49
#4

ebbek wrote:
Thanks a lot - Cricotopus seems to be a good choice! But maybe it is C. trifasciatus instead?

Grettings

Krister


Hirvenoja (1973) separated the species:

Der Raum zwischen den Lmb hell; wenn Tergit IV pigmentiert ist, befindet sich die Pigmentierung der Gegend der analmedianen Muskelmale ... trifasciatus

Prsc oder der ganze Raum zwischen den Lmb dunkel, er ganz hell; wenn Tergit IV pigmentiert ist, befindet sich die Pigmentierung wenigstens in Oralecken des Tergits ... speciosus, tricinctus

Lmb: "laterale Mesonotalbinden"

Prsc: "Auf dem anterioren Scutum wird der Raum vor dem Scutellum, der oft stärker pigmentiert ist, von Strenzke (1959) als praescutellares Dreieck (Prsc) bezeichnet."

Posted by ebbek on 28-06-2023 12:32
#5

Thanks! Seems to be a bit tricky, but I will look clooser on it later.

Regards

Krister