Taxonomic notes on the genera Scatella and Scatophila (Diptera: Ephydridae) with a remark on Trixoscelis chilensis (Trixoscelididae)
Author
Zatwarnicki, Tadeusz
Author
Irwin, Anthony G.
text
Zootaxa
2018
2018-01-31
4377
1
91
109
journal article
30877
10.11646/zootaxa.4377.1.6
bf31986f-33c6-4a7b-8b58-736c352e54e4
1175-5326
1163298
CD3ED409-1877-4141-9AE3-ADAC1BE329BE
Scatophila quadriguttata
(Meigen)
(
Fig. 24–29
)
Ephydra quadriguttata
Meigen, 1830
: 120
Scatophila quadriguttata
:
Becker, 1902
: 311
(combination).
Ephydra planiceps
Boheman, 1853
: 204
,
new synonym
.
Scatophila planiceps
:
Becker, 1905
: 213
(combination).
Scatella variegata
Loew, 1860
: 43
, synonymized by
Zatwarnicki, 1987
: 286
.
Scatophila variegata
:
Becker, 1896
: 243
(combination).
Ephydra vittigera
Zetterstedt, 1855
: 4756
, synonymized by
Zatwarnicki, 1987
: 286
.
Scatophila vittigera
:
Becker, 1905
: 214
(combination).
FIGURES 23–24.
Head with thorax, dorsal view. 23.
Scatophila mesogramma
Sturtevant, 1923
(Sweden: Pitholmen; MZLU). 24.
Scatophila quadriguttata
(Meigen, 1830)
(Belgium: De Panne; RBINS). Scale bar = 0.2 mm.
Type
material examined:
The
lectotype
male of Meigen's species, designated by
Cresson (1930: 131)
, is labelled: "4
guttata Coll. Winth.
", "4
guttata
", (red) preserved in
NMW
. Two
paralectotypes
: a female is labelled: "4
guttata Coll. Winth
", "
PARATYPE
Ephydra
4-
guttata Meigen
" (blue) and a male labelled: "
TYPE
Ephydra
4-
guttata Meigen
" preserved in
NMW
. The
lectotype
male of Boheman's species (in good condition), herein selected, labelled: "Sc. br.", "Bhm." (all handwriting), and ten
paralectotypes
(
8 males
and
2 females
) bearing the same labels, are preserved in
NHRS
; a male
paralectotype
, pinned directly (specimen in moderate condition, mesonotum darkened by liquid, right midleg lacking), labelled: "Sc br.", "Eph.
planiceps Bohem. Sc
[SG]", "
Ephydra planiceps Bhm.
" (all handwriting) preserved in
MZLU
.
Other
material examined:
BELGIUM
:
De Panne
,
8. VIII. 1928
,
M. Goetghebuer
,
3 ♂
,
3 ♀
(
RBINS
)
.
CZECHIA
:
Praha-Holešovice
, river bank,
200 m
.
,
50.07N
/
14.26E
,
10.VII.1983
,
M. Barták
,
1 ♀
(
CULSP
)
.
GERMANY
:
Ins. Usedom Ahlbeck
,
14–22. VIII. 1928
, H.
Zerny
,
1 ♂
(
NMW
);
Wersen
,
28. VIII. 1993
,
T. Zatwarnicki
,
2 ♂
,
2 ♀
.
POLAND
:
Chojnów
,
30. V. 1982
,
2 ♀
;
10. VI. 1982
, T. Zatwarnicki, 1 ♂, 1 ♀;
Wrocław-
Wojnów
,
12. VIII. 1982
,
T. Zatwarnicki
,
2 ♀
(
TZPC
)
.
SWEDEN
:
Norrbotten
: Råneå, Högsön,
1. VIII. 1978
,
H. Andersson
,
1 ♂
;
Tärendö
,
22. VI. 1969
,
L. Huggert
,
1 ♂
;
Skania
:
Båstad
,
14. VIII.
1 970,
L. Huggert
,
2 ♀
;
near
Krankesjön
, H.
Andersson
,
20. VI. 1975
,
1 ♀
,
7. VIII. 1971
,
1 ♂
(
MZLU
).
Type
localities:
Meigen (1830)
did not cite a locality for his
type
, but it is probably in the vicinity of
Hamburg
, the home-town of Wilhelm von Winthem, who collected the
type
specimens.
Boheman (1853)
gave Sjöbo in
Sweden
as the
type
locality (coordinates
55°38'5.3"N
,
13°42'12.1"E
).
FIGURES 25–26.
Head with a part of thorax of
Scatophila
quadriguttata
(Meigen, 1830)
, antero-oblique view. 25. female. 26. male (Belgium: De Panne; RBINS). Scale bar = 0.2 mm.
Diagnosis.
The species is closely related to
S. caviceps
(Stenhammar)
having sexual dimorphism of facial profiles: the male has a concave face with membranous central area (
Fig. 26
) and the female a slightly convex face (
Fig. 25
). It is distinguished from other similar species by the mesonotum having a median brown stripe before the suture, slightly broader than space occupied by the acrostichal setae and expanding posteriorly to include the dorsocentral bristles, as well as whitish centre of scutellar disc (
Fig. 24
) and yellow base of the wing. Male terminalia (
Fig. 27–29
) with anterior margin of epandrium bears medial pointed projection and arcuate anterodorsal margin of the aedeagus.
Distribution.
Palaearctic:
Austria
,
Belgium
,
Czechia
,
Denmark
,
Finland
,
Germany
,
Great Britain
,
Hungary
,
Italy
,
Netherlands
,
Poland
,
Russia
(European Territory),
Slovakia
,
Slovenia
,
Sweden
.
Remarks.
After examination of the
lectotype
of Meigen's species we are satisfied that all features agree well with
S. planiceps
(Boheman)
, which makes this species a synonym of
S. quadriguttata
.