Taxonomic notes on Western Palaearctic Conopidae (Diptera)
Author
Stuke, Jens-Hermann
text
Zootaxa
2016
2016-10-27
4178
4
521
534
journal article
10.11646/zootaxa.4178.4.4
91768d2f-3bdc-4512-bb6b-22f841103733
1175-5326
163589
0FC215B7-B640-42E5-9709-64CC15581D97
P. chrysorrhoea
(
Meigen, 1824
)
Conops chrysorrhoea
Meigen, 1824
: 128
; type-locality: “
Oesterreich
”;
holotypus
♀
[
MNHN
]
Diagnosis.
Physocephala chrysorrhoea
belongs to a difficult group of species with a broad dusted band reaching from the mid coxa to the notopleuron and not becoming narrower dorsally. The key characters that identify this species are the cell dm which is completely covered with microtrichia, the more or less hyaline cell sc that is obviously paler than radial cell r2+3, and the yellow subcostal vein Sc that is distinctly paler than radial vein R2+3. In typical specimens, cell r2+3 is completely brown to black, but specimens with the tip of this cell hyaline also occur and intermediates are not uncommon. When typical
P. chrysorrhoea
is compared with typical
Physocephala pusilla
it seems unbelievable that there should be any problem distinguishing the two species but small, atypical
P. chrysorrhoea
with unusually dark wings can be very confusing. The distinction of typical
P. chrysorrhoae
and
Physocephala antiqua
is usually easy, but
P. antiqua
specimens with dark coloured wings (colour morph
syriaca
) can have a completely brownish radial cell r2+3 and cell dm only partially lacking microtrichia, making them also confusingly similar. If the pleural dusting is not clear, e.g. in old specimens, the distinction from the colour morph
truncata
with dusted pleura can become difficult as well. The densely dusted hind coxa and the bi-segmented arista will distinguish
P. chrosorrhoea
from
Physocephala vittata
, however.
=
P. aureotomentosa
Kröber, 1915
syn. nov.
Physocephala aureotomentosa
Kröber, 1915b
: 74
; type-locality: “
Amasia
” [
Turkey
];
holotypus
♀
[
NMW
]
The female
holotype
was examined and has the following labels: (1) “Mann / 1860 /
Amasia
”; (2) “
Type
” [red label]; (3) “
Physocephala
♀
/
aureotomentosa
Krb.
/ O. Kröber det. 1914” [first two lines handwritten]. The specimen is complete and in perfect condition.
Kröber (1915b)
separated
Physocephala aureotomentosa
from
Physocephala chrysorrhoea
by means of the wing colouration: the dark colouration in cell r2+3 does not reach to the tip of the cell in
P. aureotomentosa
. This character turns out to be very variable in
P. chrysorrhoea
and therefore
P. aureotomentosa
falls within the variation of
P. chrysorrhoea
and is accordingly placed as a junior synonym.
=
P. emiliae
Zimina, 1974
syn. nov.
Physocephala emiliae
Zimina 1974
: 132
; type-locality: “Pamir, Lyangar on Pyandzhe,
2800m
” [translated by
Clements & Vincent 2001
]; holotypus ♀ [ZMUM].
I was able to examine
paratypes
of
Physocephala emiliae
and these specimens accord with European specimens of
Physocephala chrysorrhoea
. The characters set out in the original description fit with the concept of
P. chrysorrhoea
as described above, and therefore
P. emiliae
is herewith placed as a junior synonym of
P. chrysorrhoea
.
Zimina (1974)
used only characters of colouration and size to distinguish
P. emiliae
from
P. chrysorrhoea
, and these characters fall within the range of variation of the latter species.
=
P. zaitzevi
Zimina, 1979
syn. nov.
Physocephala zaitzevi
Zimina 1979
: 196
–197; type-locality: “Ipaj-Kala,
30km
to the S.W. of Bakharden,
100m
, Turkmeniya”, translated by
Clements & Vincent 2001
; holotypus ♀ [ZMUM]
I was able to examine the
holotype
of
Physocephala zaitzevi
.
After seeing more material of
Physocephala chrysorrhoea
and realising that several previously undetermined Palaearctic
Physocephala
in fact belong to that species, I have come to the conclusion that
P. chrysorhoea
is an extremely variable species and that
P. zaitzevi
falls within its variation range. The characters set out in the original description also fit completely to this concept. Contrary to the description of
Zimina (1979)
I cannot find any differences in the shape or the size of the female theca between
P. zaitzevi
and
P. chrysorrhoea
, either. Therefore, I herewith propose
Physocephala zaitzevi
as a junior synonym of
Physocephala chrysorrhoea
.