Description of the pupal exuviae of some species belonging to Orthocladius s. str. van der Wulp, 1874 (Diptera: Chironomidae: Orthocladiinae), with a new key to species of West Palaearctic region
Author
Bruno Rossaro
Author
Carlotta Casalegno
text
Zootaxa
2001
2001-08-31
7
1
20
journal article
http://doi.org/10.5281/zenodo.4618447
b8a70227-3f95-4b6c-bab0-423990ebbee0
11755326
4618447
B8D6DBE1-9599-4328-A653-6B10532F5C48
Orthocladius ruffoi
Rossaro
&
Prato,
1991
Orthocladius ruffoi
Rossaro & Prato,
1991
Rheorthocladius
sp. A
Thienemann,
1944
(
Rossaro & Prato
1991
)
Orthocladius
Pe
1
,
Langton,
1984
:
149
(
Rossaro & Prato
1991
)
DESCRIPTION. See
Thienemann (
1944
:
598
)
,
Langton
&
Cranston (
1991
,
Fig.
1
e,
2
b,
4
a) and
Rossaro
&
Prato (
1991
,
Fig.
2
, 3)
. Thoracic horn
250350 m
long. Pedes spurii B absent. Tergites with median points always well separated from posterior ones on
TIIVI
, sometimes continuous laterally on T
IIIV
. T
IIIII
with lateral points well reduced in size with respect to median ones. Very long dorsal and ventral setae on segments
VIIVIII
. Abdominal segment
VII
with
3
and segment
VIII
with
5
strong lateral setae. Pedes spurii A present on S
IVVI
. Taeniate extensions of cuticle present on anal lobes, in addition anal lobes with a lateral fringe of thin, short setae. Anal macrosetae not hooked at tip,
275340 m
long, anal lobes
300375 m
long and
400480 m
wide.
COMMENTS. The pupal exuviae was described by
Thienemann (
1944
, p.
598
)
and labelled
Rheorthocladius
sp. A, and by
Langton (
1984
, p.
149
)
and labelled
Orthocladius
(s. str.) Pe
1
.
MATERIAL EXAMINED:
ITALY
: PIEMONTE: Acqualba stream,
7
/
7
/
1976
, 2 Pex. LOMBARDIA: Lambro river, Asso;
27
/
12
/
1977,1
male pupa; a creek, tributary of Oglio river near Vezza,
5
/
8
/
1979
, 1 Pex. EMILIA ROMAGNA: Po river, Caorso (PC),
19
/
5
/
1981
, 1 Pex. MARCHE: Potenza river, Castel Raimondo,
8
/
4
/
1986
, 1 Pex.
LAZIO
: Velino river,
11
/
3
/
1990
, 1 Pex. ABRUZZO: Sangro river, PNA, st.
4
(Pescasseroli), (SS
84
Km
41
),
21
/
5
/
1978
, 1 Pex; PNA, st.
13
(Profluo, prato Piano),
21
/
5
/
1978
, 1 Pex; PNA, st.
14
(Scontrone),
11
/
11
/
1988
, 1 Pex; Vera spring,
12
/
3
/
1988
, 1 Pex;
3
/
5
/
1989,1
Pex;
3
/
6
/
1989,1
Pex.