Gallery Links
Users Online
· Guests Online: 12

· Members Online: 0

· Total Members: 4,736
· Newest Member: Fabien Girard
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· johan v00:17:46
· John Carr05:16:19
· Nosferatumyia07:03:40
· Isidro07:31:15
· evdb07:41:48
· Arthur van O...08:05:15
· andrewsi08:09:32
· Carnifex08:39:13
· Grigory Popov08:47:42
· Andre Burgers08:52:53
Latest Photo Additions
View Thread
Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
 Print Thread
Hybotidae from Polynesia
basti_st
#1 Print Post
Posted on 16-11-2021 06:33
Member

Location:
Posts: 21
Joined: 30.06.21

Hi colleagues, can someone help me with the identification of this dipteran? I am not even sure about the family. Any input and ID help is highly appreciated. More images available if necessary. Collected in French Polynesia

Thanks, best
Sebastian
basti_st attached the following image:


[233.08Kb]
Edited by basti_st on 18-11-2021 04:04
 
Tony Irwin
#2 Print Post
Posted on 16-11-2021 12:03
User Avatar

Member

Location: Norwich, England
Posts: 6756
Joined: 19.11.04

Hybotidae - not sure which genus
Tony
----------
Tony Irwin
 
basti_st
#3 Print Post
Posted on 18-11-2021 04:03
Member

Location:
Posts: 21
Joined: 30.06.21

Hi Tony, thanks for the family identification.

Hybotidae have thus far not been reported from Polynesia, so I am not sure how to proceed with the IDing. I am unfamiliar with this dipteran family - does it commonly show high degrees of endemism and this is potentially an undescribed species - or rather the opposite; are there introduced/ widespread species and my animal is potentially a recent introduction to Polynesia?
I'm thankful for any input on what would be the best way to continue working on this animal.

Best
Sebastian
 
igor
#4 Print Post
Posted on 18-11-2021 13:54
Member

Location:
Posts: 273
Joined: 23.11.06

Hi,
This is the genus Austrodrapetis Smith. It includes only one species (A. coxalis) described from Cook Is. Your specimen (male) is very similar to A. coxalis. A picture of fore legs would be helpful (they are modified in the male of A. coxalis).
Best wishes,
Igor Shamshev
 
basti_st
#5 Print Post
Posted on 22-11-2021 20:24
Member

Location:
Posts: 21
Joined: 30.06.21

Hi Igor, thanks for your input. I hope this picture from lateral view helps. If not, let me know and I can make more images from different angles.

The animal has definetly the modifications described and illustrated in Smith (1964). The fore coxae from the inside shows a dark spot and the modification of the fore tibia seems also to resemble the illustration in Smith. However, some of the other characteristics described for Austrodrapetis coxalis are, at least to me as a beginner in dipteran identification, not clearly given... But it probably requires a more thorough morphological examination under higher magnification, which I am currently not able to do. Is it fair to just assume that this is A. coxalis, or are we possibly looking at an undescribed, second species of this genus?
I find it extremely difficult to judge, which genera/ families show high degrees of radiation and speciation and which not. In some groups, there is a new species basically on every island in the Society Islands, even though they are only few kilometres separated, while other species seem to be widely distributed from Melanesia to Hawaii.

Best
Sebastian
basti_st attached the following image:


[206.07Kb]
Edited by basti_st on 22-11-2021 20:46
 
igor
#6 Print Post
Posted on 30-11-2021 23:15
Member

Location:
Posts: 273
Joined: 23.11.06

Hi Sebastian,
I am sorry for late reply. Thank you for the additional picture and interesting comments. As I see from your new picture there are some colour differences but otherwise this specimen is rather A. coxalis. Indeed, there are undescribed species of Austrodrapetis in Melanesia, e.g. from Fiji.
Best wishes,
Igor
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Hybotidae? Switzerland Diptera (adults) 2 10-01-2022 14:57
Hybotidae : Platypalpus Diptera (adults) 8 15-12-2021 10:56
Hybotidae ID Diptera (adults) 2 06-12-2021 10:28
Hybos grossipes, Hybotidae , Jul 16, 2021, Augustinerkreuz, Austria Diptera (adults) 4 30-11-2021 22:35
Lonchaeidae, Polynesia Diptera (adults) 7 24-11-2021 12:09
Date and time
20 January 2022 07:28
Login
Username

Password



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.

Paul
Donate
Please, help to make
Diptera.info
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
Shoutbox
You must login to post a message.

09.01.22 17:56
Hello, I'm looking for literature on chironomid larvae that are able to survive after being entrapped in ice for at least several days . So far I've only found literature on Eretmoptera murphy

11.12.21 17:10
Dematoneura in the gallery should be DeSmatoneura

23.09.21 15:29
All sorted.

16.09.21 22:24
Sorry put 5 new threads in Asilidae forum instead in Syrphidae forum, can pleas an admin move it to Syrph? THANKS, Norbert

09.09.21 07:48
https://www.jeugdb
ondsuitgeverij.nl/
product/de-vliegen
families-met-drie-
voetkussentjes/

09.09.21 07:47
wing ventation is totally different

03.09.21 12:51
Hi, what's the major difference between dolichopodidae and rhagionidae? Can someone help me? Thanks!

28.06.21 15:24
thx TO eklans

03.06.21 11:11
@Tony Irwin Thank you Tony! I've emailed you there Pfft

02.06.21 22:26
Rob - can you PM me with an e-mail address, and I'll send it over.

Render time: 2.08 seconds | 160,925,152 unique visits