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View Thread :: Identification queries :: Diptera (adults)
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female Therioplectes gigas ? > yes
Tjitske Lubach
#1 Print Post
Posted on 22-05-2017 20:42

Location: France, Indre, Saint-Gilles
Posts: 144
Joined: 12.08.09

Today I found this enormous Tabanidae on Heracleum sphondylium (Hogweed). Never seen anything this big, must have been at least 20-23 mm, probably more. First thought was a very large Volucella (Syrphidae), but soon after I found out it was a horsefly. I suppose it must be a female Therioplectes gigas? There was a second one but I could not see if this was male or female.

Thanks in advance for any information about this spectacular species, Tjitske Lubach

It concerns this observation
Therioplectes gigas observed at 2017-05-22 France - La Fontoure
Edited by Tjitske Lubach on 24-05-2017 13:50
Tjitske Lubach
#2 Print Post
Posted on 24-05-2017 08:07

Location: Soest, NL
Posts: 13175
Joined: 21.07.04

Yes. Congratulations, pretty rare in France.

Tjitske Lubach
#3 Print Post
Posted on 24-05-2017 09:49

Location: France, Indre, Saint-Gilles
Posts: 144
Joined: 12.08.09

Thank you Theo !

Could you tell me where to find some information on the biology of this species? I have been searching the web, but I didn't find much.

Thanks in advance,

Tjitske Lubach
#4 Print Post
Posted on 25-05-2017 09:04

Location: Soest, NL
Posts: 13175
Joined: 21.07.04

I am not sure what you mean with 'biology'.

A taxonomical review is due to yours truely (Zeegers 2005 in Studia Dipterologica). The larvae are very little know (only from USSR species, in Andreeva). The males hover persistently at 1 meter altitude. Seguy and Zeegers (2005) give the review of the records in France. Otherwise, little has been published....
Tjitske Lubach
#5 Print Post
Posted on 12-06-2017 20:30

Location: France, Indre, Saint-Gilles
Posts: 144
Joined: 12.08.09

Thank you Theo. That is what I wanted to know. Something about the life (where do the larvae live, what do they eat, etc...). I understand that little is known about this Tabanidae.

What word do they use in English, talking about the way of life of a species ? Maybe they use ecology ? In French they use 'biologie' I far as I know.

I am sorry I can't find your article though...
Edited by Tjitske Lubach on 12-06-2017 20:31
Tjitske Lubach
#6 Print Post
Posted on 13-06-2017 07:18

Location: Soest, NL
Posts: 13175
Joined: 21.07.04

It is in Studia Dipterologica, or on my researchgate.

Sergiy Filatov
#7 Print Post
Posted on 14-06-2017 17:48

Location: Kharkiv, Ukraine
Posts: 257
Joined: 22.10.10

Hi, Theo

I couldn't find the paper among articles uploaded to your profile at RG. Would be great to have a copy!
Tjitske Lubach
#8 Print Post
Posted on 14-06-2017 17:56

Location: France, Indre, Saint-Gilles
Posts: 144
Joined: 12.08.09

Hello Theo,

Yes, I have tried also, but I couldn't find it either...

Tjitske Lubach
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14.12.18 16:27
Each user has a maximum of ten new threads per day (24 hours). Just to prevent a single user from sending scores of his unidentified fly photos at once and thus drain out any other threads.

10.12.18 00:08
Hello, I'm having a problem posting new threads, as the "No new Threads allowed..." is showing up on all of the forums. Is there some sort of thread limit I've exceeded?

03.12.18 11:19
SabineH: you have to be logged in to see "New Thread" in the right upper corner of each "forum" site. In the case of accidental logout you have to start over.

30.11.18 04:57
If anybody has any PDFs on Diptera of Southeast Asia I would love to have copies of them, mrgordonramel@yaho

29.11.18 20:13
Hello, tried to start a thread but upload did not work. And now I cannot find the button "New post" anymore. Please, help. Thanks

13.11.18 12:49
Hello Can any1 give me a contact email for Entomologie heute Thx

11.11.18 18:28
I don't have it, sorry

11.11.18 12:51
@Rafael_Carbonell What I would like is a pdf copy of Key to the Families of Diptera.

10.11.18 19:29
@Gordon, what exactly do you need? All the Oosterbroek literature is here:

09.11.18 15:56
Does anybody have a PDF of Oosterbroek they could email me? I had one but it didn't make it to Cambodia.

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