Gallery Links
Users Online
· Guests Online: 8

· Members Online: 0

· Total Members: 4,824
· Newest Member: oscarhopgood
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· Gansucha00:28:59
· andrewsi01:52:22
· Arthur van O...02:07:35
· Nosferatumyia02:15:22
· Carnifex02:25:07
· ESant02:27:24
· Karola02:50:26
· piros03:01:14
· weia03:17:53
· ebbek03:32:25
Latest Photo Additions
View Thread :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Print Thread
Chironomidae v Ceratopogonidae
Susan R Walter
#1 Print Post
Posted on 17-11-2022 16:54
User Avatar


Location: Touraine du Sud, central France
Posts: 1790
Joined: 14.01.06

I recently received this query from a young French entomologist, translated by me, and since nematocera aren't really my thing I wondered if someone on the forum could help: 'In the case of nematocerans, with neither anal veins joining the wing margin, nor disc cells, nor ocelli, and with a reduced number of veins (no more than 8), the key often leads me to choose between Chironomidae and Ceratopogonidae, without either choice being fully convincing. Also, I regularly find myself at this stage, with very different individuals, not necessarily showing the distinctive antennae for these two families...'
John Carr
#2 Print Post
Posted on 17-11-2022 19:45
User Avatar


Location: Massachusetts, USA
Posts: 9178
Joined: 22.10.10

If the postnotum has a longitudinal groove, it is Chironomidae. This is rarely absent and you are unlikely to collect the exceptions in central France. On marine shores you may find them.

If vein M is forked or there is a crossvein between the branches of the radial vein, it is Ceratopogonidae. The veins can be hard to make out in photographs.

If the front basitarsus is longer than the front tibia it is Chironominae. There is a slight amount of overlap in "leg ratio" with Orthocladiinae.

If the last 4-5 antennal segments are elongated, it is Ceratopogonidae. If only the last 1 or 2 are, Chironomidae. If the antenna is reduced to 9 or fewer flagellomeres, Chironomidae.

If the claws are long, a femur greatly swollen, or there are spines under the fifth tarsomeres, one of the predatory Ceratopogoninae. Likewise if it has apparently functional mandibles (in Europe).

Usually if the hind legs are long you have Ceratopogonidae, but see also Tanypus in the Chironomidae.
Susan R Walter
#3 Print Post
Posted on 18-11-2022 11:17
User Avatar


Location: Touraine du Sud, central France
Posts: 1790
Joined: 14.01.06

Thanks John, that looks super helpful. I will pass it on to Anastasia.
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Ceratopogonidae? [Correction: =>Cecidomyiidae] Diptera (adults) 5 31-01-2023 00:05
Little gnat, 3 mm, in December => Chironomidae / Tanypodinae Diptera (adults) 3 23-12-2022 12:20
Very little Chironomidae ID ? Diptera (adults) 3 10-12-2022 12:54
Chironomidae, subfamily Orthocladiinae by JC. Diptera (adults) 4 08-12-2022 12:25
Chironomidae, subfamily Orthocladiinae by JC. Diptera (adults) 4 08-12-2022 12:21
Date and time
06 February 2023 01:06


Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Temporary email?
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.

Please, help to make
possible and enable
further improvements!
Latest Articles
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download

Public files of Syrph the Net can be downloaded HERE

Last updated: 25.08.2011
You must login to post a message.

27.12.22 21:10
Thanks, Jan Willem! Much appreciated. Grin

19.12.22 11:33
Thanks Paul for your work on keeping this forum available! Just made a donation via PayPal.

09.10.22 17:07
Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

07.10.22 11:55
Can any1 help out with a pdf copy of 1941 Hammer. Vidensk. Meddel. Dansk Naturhist. Foren. 105; thank you

05.10.22 19:59
Found! https://www.veldsh

05.10.22 19:53
@zeegers, your book seems difficult to get from Spain, is there another way?

08.09.22 09:29
Ladies and gentlemen https://jeugdbonds

26.08.22 15:06
Lis - This is vol.11 (eleven) and is 346 pages. Sorry, don't have a copy.

15.08.22 14:22
Hello, can any1 help out with a copy of Catalogue of Palaearctic Diptera II: Scathophagidae-Hyp
odennatidae? or at least how many pages it is? thx

19.06.22 07:42
I can not post an image - I do all right - dont know what to do! Gunther

Render time: 0.38 seconds | 173,691,871 unique visits