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View Thread :: Identification queries :: Diptera (adults)
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Phasia theodori?
#1 Print Post
Posted on 16-04-2021 23:20

Location: North France, lille
Posts: 828
Joined: 08.06.10

Dear all,

Second Tachinid question for tonight:
Here is a small specimen I identified as a Phasia following Central europe key.
From side of Loire (ending of the Layon river, for those who are interested in Diptera and vine Smile), wet area.
Several specimens, I also caught a female (and I have picture in vivo of her)

I totally dont get the first point of the Phasia key, so I followed both.
Ibelieve it could be P theodori as:
-halteres are yellow
-hairs on peristome are totally white
-S7 of female appear similar to the figure given.

My little doubt are from the wing of male: It has is centraly black tinged (not greatly visible on this picture I am afraid).
And wing is mention to be unspotted. So I am wrong?

I apologize for quality of pictures, specimen is really small!
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279635
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279636
clovis : France : Chalonnes-sur-Loire : 49290 : 10/10/2020
Altitude : 12 m - Taille : 6 mm
Réf. : 279638
#2 Print Post
Posted on 17-04-2021 16:57

Location: Soest, NL
Posts: 15797
Joined: 21.07.04

As you noticed, wing colouration is off, moreover, it is too big.
Are you sure it is Phasia and not Ectophasia ? When Phasia, obesa is the first species to check. Female genitalia are highly distinctive in Phasia.

Edited by Zeegers on 17-04-2021 16:57
#3 Print Post
Posted on 02-05-2021 18:21

Location: North France, lille
Posts: 828
Joined: 08.06.10

Your right, this is Phasia obesa...
In the mean time I caught a P pusilla: I now understand the "hairs on parafacial" critera!
many thanks for putting me in right direction!
Jump to Forum:
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Date and time
09 May 2021 20:39


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09.05.21 16:31
Extensions in uppercase are (and were) accepted for gif, jpg, jpeg and png

09.05.21 16:01
OK, thanks Roger, now if someone would just ID the fly I would be happy.

06.05.21 22:31
FTAO - Gordon; Please make sure that you use lower case, because attachments with extensions in upper case (capitals) are rejected. So sayeth GOD AKA Paul. Cool

06.05.21 21:40
A file called "Fly01a" has an UPPERCASE "F" Gordon. The site takes a dim view of UPPERCASE "'F's"!! awkward

06.05.21 06:50
OK, it has started working now, no idea what was going on.

06.05.21 06:41
I know I have been away a long time - but why can't I load a 63Kb file called Fly01a

15.04.21 17:02
Negrobov, Michael Ackland, Chris Thompson, Laszlo Papp... The Grim Reaper ravages in 2021

29.03.21 10:55
@PaulBeuk Thanks again mate- very useful! Smile

14.03.21 16:00
Check your Messenger.

11.03.21 18:23
Greetings! Does anyone have: Satchell's 1947 paper: The larvae of the British species of Psychoda (Diptera: Psychodidae)??? Many thanks Smile

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