Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae)
Author
Klopfstein, Seraina
text
Zootaxa
2014
2014-05-22
3801
1
1
143
journal article
http://dx.doi.org/10.11646/zootaxa.3801.1.1
86799ab1-401c-405c-9122-a1e96d72fc0e
1175-5326
249944
E5F8C489-37F4-4A76-8E25-EFC65CDCA1D7
Diplazon tibiatorius
(
Thunberg
1824
,
Ichneumon
)
Bassus albosignatus
Gravenhorst
1829
Diagnosis.
Fore wing length 5.0–7.0 mm. Antenna of both sexes with
16 to 18
flagellomeres. Face with punctures strong, clearly distinct from the background sculpture. Mesopleuron smooth and polished and strongly punctate also covering most of upper half. Propodeum with a full set of carinae enclosing basal, lateral and petiolar areas. Tergite
1
0.8
–1.0 times as long as wide in females, 1.0–
1.2 in
males, tergite
2
0.55–0.7
times as long as wide in both sexes; tergites 2, 3 and
4
with large, distinct punctures on a rugose or on tergites
3
and
4
rather smooth and polished background, punctures with distinct margins. Transverse impressions distinct on tergites
1–4
. Metasoma dorsoventrally depressed.
Colouration of females.
Antenna dark brown. Head and mesosoma black, face with yellow along inner orbits, without yellow central face patch, yellow medially on clypeus and mouthparts, hind corner of pronotum, tegula, subtegular ridge, usually small shoulder mark, upper mesepimeron; scutellum white. Legs orange, coxae black with yellow apices, hind coxa orange (but see Notes); femora orange; hind tibia black-white-black banded, hind tarsus dark. Metasoma black, tergite
1
usually with a white apex.
Colouration of males.
As in females but with yellow ventrally on scape and pedicel, central yellow face patch. Fore and mid coxae with yellow apices.
Material examined.
The
lectotype
of this species has been designated by Cresson (Cresson
1916
) and is stored at the Academy of Natural Sciences in Philadelphia (
Yu
et al.
2012
). This renders the material in Uppsala
paralectotypes
, despite the labeling of the male as
lectotype
by
Diller (
1980
)
:
Paralectotypes
of
Ichneumon tibiatorius
Thunberg
:
Sweden
.
1
♂
,
1
♀, at UU
.
France
(
3
),
Hungary
(
50
),
Russia
(
2
),
Sweden
(
20
),
Switzerland
(>
100
),
Turkey
(
1
).
Distribution.
Holarctic and Neotropical.
Notes.
There is a form of
Diplazon tibiatorius
with black hind coxae that appears as “
Diplazon
cf.
tibiatorius
” in the key. In the past, such specimens have usually been identified as
D. varicoxa
, from which they clearly differ by the characters given in the key. Only the colour of the coxae distinguishes these specimens from the typical
D. tibiatorius
with orange coxae; they thus probably do not represent a separate species.