A review of the subgenus Cladoconnus Reitter of the genus Euconnus Thomson (Coleoptera: Staphylinidae: Scydmaeninae) from the Balkan Peninsula, Turkey and Caucasus
Author
Hlaváč, Peter
Author
Stevanović, Miroslav
text
Zootaxa
2013
3646
4
401
425
journal article
43598
10.11646/zootaxa.3646.4.5
0d308b82-39a9-49be-a5c1-94ba3efcbea0
1175-5326
219466
CECD90F2-218E-40B8-ABB9-9E39BF043FF3
Euconnus
(
Cladoconnus
)
denticornis
Müller & Kunze
(
Figs. 29–30
)
Scydmaenus denticornis
Müller & Kunze, 1822: 196
.
Type
locality: Bei Leipzigunter [near Leipzig] and also near Odenbach and Norwich.
Euconnus
(s.str.)
denticornis
Müller & Kunze
: Ganglbauer, 1899: 49; Reitter, 1882: 574
Euconnus
(
Cladoconnus
)
denticornis
Müller & Kunze
: Franz, 1971b: 301,
Fig. 23
; Karaman, 1974: 140,
Figs. 25, 26, 26
a;
Euconnus denticornis
Müller & Kunze
: Castellini, 2006: 89.
Scydmaenus dennii
Stephens, 1832: 83
.
Type
locality: in the vicinity of London, synonymized by Reitter, 1909: 227.
Scydmaenus ruficornis
Denny, 1825: 59
.
Type
locality: near London, in
Norfolk
, Barham and Epping Forest, synonymized by Croissandeau, 1898: 121.
Euconnus solarii
Reitter, 1904: 152
.
Type
locality:
Italien
: Vallo Lucano (S. Biase), synonymized by Karaman, 1974: 127.
Euconnus
(s. str.)
suramensis
Reitter, 1882: 574.
Type
locality: Kaukas [Caucasus], synonymized by Croissandeau, 1898: 121; synonymy confirmed by Karaman, 1974: 127 and by Davies, 2004: 26.
Euconnus denticornis
a.
uredineus
Trella, 1924: 22.
Type
locality: Przemyśl,
Poland
[aberration, not available name]
Material examined
(10 3, 2 Ƥ):
CZECH REPUBLIC
:
1 Ƥ: Moravia bor., Suchdol nad Odroum M. Mantič leg. (PHKS). 1 Ƥ: Moravia, Brno – Sobĕšice,
3.vi.1988
, P. Průdek. (PHKS). 13: Mor. Mer. Pavlovské kopce, Klausem (53),
23.v.1962
, lgt. Lauterer. (PHKS).
SLOVAKIA
:
1 3: Muránska Planina, v. Strelnica,
14.vi.2009
,
fagetum
.
(SBPC). 1 3: Nesvády,
2 km
JV, 8074, Líščie diery, písčiny,
24–25.v.1995
, M. Mantič leg. (PHKS).
SLOVENIA
:
2 3:
Slovenia
bor., Peċovnik,
5.v.2001
, J. Vávra leg. (JVOC). 1 3: Sajevce, Krakovski Gozd forest, Kostanjevica na Krki env,
24.iv.2004
, Tomáš Sitek lgt. (PHKS). 1 3: Poljane env, Polina pečina,
27.vi.2002
, V. Zieris lgt. (VZPC).
BOSNIA AND HERZEGOVINA
:
1 3:
Bosnia
, Mojmilo, 1929.
vi.10
, leg. Dr. J. Fodor. (HNHM).
TURKEY
:
1 3: Sinop,
20 km
SW Ayancuk,
895 m
,
41°49'34''N
,
34°24'14''E
, fir and beech forest,
2.iv.2009
, V. Assing. (HMGG). 1 3: Sinop,
25 km
S Sinip, W Lala,
41°53'15''N
,
35°01'46''E
,
240m
, oak forest,
31.iii.2009
, V. Assing. (HMGG).
Description:
Body shiny, pitchy brownish-black, body length
1.75–1.80 mm
, body width
0.75–0.80 mm
; with long, golden pubescence, sparse on elytra, erect on sides of pronotum and posterior part of head. Head about 1.25 times as wide as long, tempora evenly convergent posteriorly; eyes protuberant; supra-antennal tubercles strongly protuberant. Antennae (
Fig. 29
)
0.95–1.05 mm
long; antennomeres III–V subquadrate and subequal; VI subtapezoidal; 1.15 as wide as long; VII subtrapezoidal, 1.50 as wide as long; antennomere VIII about 1.30 times as long as wide, about 2.70 times as long as VII and 1.30 times as long as IX; antennomere X 1.15 times as wide as long; terminal antennomere 1.90 times as long as wide and 1.80 times as long as X. Pronotum about as long as wide. Elytra about 1.40 times as long as wide, sutural striae reaching basal fourth of elytral length. Aedeagus
0.38 mm
in length, as in
Fig. 30
.
Distribution:
Austria
,
Belgium
,
Bosnia and Herzegovina
,
Croatia
,
Czech Republic
,
Denmark
,
Estonia
,
France
,
Great Britain
,
Germany
,
Georgia
,
Hungary
,
Italy
,
Latvia
,
Lithuania
,
Macedonia
,
Netherlands
,
Poland
,
Romania
,
Slovakia
,
Slovenia
,
Russia
(South European Territory),
Sweden
,
Switzerland
,
Ukraine
,
Serbia
,
Montenegro
and
Turkey
.
Differential diagnosis:
Euconnus denticornis
differs from other species of
denticornis
group by small body,
1.75–1.85 mm
long, antennomeres III–V subquadrate and subequal, VII subtrapezoidal 1.50 times as wide as long, antennomere VIII about 1.30 times as long as wide, IX 1.20 times as wide as long, X 1.15 as wide as long and by terminal antennomere 1.90 times as long as wide.
E. denticornis
is similar to
E. puniceus
but it differs from late in darker colour, smaller size and longer terminal antennomere which is 1.90 times as long as wide, only 1.80 times as long as wide in
E. puniceus
.
Note I:
Castellini (2006) discussed a possible synonymy of
E. robustus
,
E. dodecanicus
,
E. pararobustus
and
E. pseudorobustus
with
E. denticornis
based on the similar structure of aedeagi. Illustrations of Herbert Franz, in general, are of very poor quality and we are of the opinion that it is not possible to synonymyze any of his species without studying the material and just on the basis of his illustrations.
Euconnus robustus
,
E. dodecanicus
and
E. pararobustus
belong to a different group of species than
E. denticornis
and all three seem to be distinct species although no material of
E. pararobustus
was available for our study. These species are clearly different from
E. denticornis
in external characters and in the structure of the aedeagus. The aedeagus of
E. pseudorobustus
is very similar to that of
E. denticornis
,
but we decided to maintain it as a separate species (see discussion in remarks for
C. pseudorobustus
).
Note II:
The aberration
uredineus
of
Euconnus denticornis
was described by Trella (1924), this name is infrasubspecific and it is not available (ICZN, 45.5.). This name was incorrectly used as a synonym of
E. denticornis
by Davies (2004: 207).