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#1 2011-07-17 22:29:52

Alan Outen
DF Members
Name: Alan Outen
Registered: 2010-06-24
Posts: 828

A Myopites species (Tephritidae) from Beds

This minute Tephritid (3mm at most) was swept from Pulicaria dysenterica (Common Fleabane) at Maulden Woods, Beds on 15 July 2011. The small size, wing markings and host plant suggest Myopites and using White's key the distinction between the two species is that the abdominal tergites are predominantly yellow in M. inulaedysenterica, predominantly black in M. eximia.

Thus colour of tergites and host plant seems to indicate that this is M. inulaedyssenterica. In addition, not surprisingly in view of the host plant preference, M. eximia has a coastal distribution whereas M. inulaedyssenterica occurs inland. (I note that the Chandler test key does not separate the two UK species in this genus).

My main concern however in this identification is that the wing markings are quite strongly defined whereas the wing maps in Smit show a rather weak pattern for M. inulaedyssenterica, much stronger in M. eximia.

I would be very grateful if someone more experienced than I am could confirm that my identification of M. inulaedyssenterica is correct (or presumably tell me that I am completely on the wrong track!!).

So far as I am concerned it is a nice find and a new record for Beds. I have retained the specimen.

Many thanks

Alan


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#2 2011-07-18 21:30:49

falky
Registered user
Name: Steven Falk
From: Kenilworth
Registered: 2009-11-30
Posts: 415

Re: A Myopites species (Tephritidae) from Beds

Looks good to me, I always sweep fleabane for it - but only rarely find it.

Falky

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#3 2011-07-18 21:53:03

Alan Outen
DF Members
Name: Alan Outen
Registered: 2010-06-24
Posts: 828

Re: A Myopites species (Tephritidae) from Beds

Many thanks Falky.

Alan

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#4 2011-07-21 23:55:33

adamwright
DF Members
Name: Adam Wright
Registered: 2009-02-12
Posts: 24

Re: A Myopites species (Tephritidae) from Beds

Hi Alan,
Yes, M. inulaedyssentericae.  Went through a phase of finding this regularly ( especially on the Isle of Wight) about 5 or 6 years back, but seems to have gone scarce again. Coincidentally, found it yesterday in Berkshire (first time this year).Definition of wing markings is subject to individual variation, and freshly emerged specimens often have paler markings, as with many tephritids. M. eximia is very faithful to the host plant, and can be abundant when found.

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#5 2011-07-22 10:56:43

Alan Outen
DF Members
Name: Alan Outen
Registered: 2010-06-24
Posts: 828

Re: A Myopites species (Tephritidae) from Beds

Thank you Adam for this useful extra information.

Alan

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#6 2011-07-22 21:48:27

adamwright
DF Members
Name: Adam Wright
Registered: 2009-02-12
Posts: 24

Re: A Myopites species (Tephritidae) from Beds

Hi Alan, check your emails - I have sent you one which might help with your Bedfordshire fly list, but it may appear in your spam folder because my email address will be unknown to your computer.
To everyone else - sorry this is off thread !

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#7 2017-10-26 12:47:20

Malcolm Storey
DF Members
Name: Malcolm Storey
From: Wimborne, Dorset
Registered: 2012-03-22
Posts: 4
Website

Re: A Myopites species (Tephritidae) from Beds

There's also Myopites apicata - a few records in the UK. It "differs from other Myopites species
in the orientation of the last section of fourth longitudinal vein
in the wing, the distal 2/3 of which is parallel or almost parallel
to third vein, terminating in the wing apex, or very slightly before.
This is occasionally the case in M. inulaedyssentericae, but the
latter is a larger species, with mainly black pleura and pleural membrane
and completely black oviscape, '"hich is longer than the preabdomen;
in addition, the spots on the wing of the latter species
are usually wider than the hyaline gaps. M. apicata is similar to
M. tenella Frauenfeld, but differs from the latter, in addition to
the above mentioned character of the wing venation, by having golden
rather than yellowish-brown pollinosity on the mesonotum, by the
fifth abdominal tergite in the male, which is wider at base than long,
not longer than wide and by the oviscape, which is partly yellow,
not entirely black. M. apicata resembles M. stylata (F.) in calor,
differing from it in its smaller size and in the narrow bands of the
lving, which are narrower than the hyaline gaps between them, not
broader. Further, in M. stylata the apical spot extends into second
posterior cell, crossing fourth vein, whereas in M. apicata it does
not cross this vein. The aculeus of the female of M. stylata is
more elongate than that of M. apicata, being about 1.5 times as long
as the latter."

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