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A N N A L E S Z O O L O G I C I (Warszawa), 2007, 57(4): 823-826
A NEW SPECIES OF THE GENUS PHYTODIETUS
GRAVENHORST, 1829 (HYMENOPTERA:
ICHNEUMONIDAE) FROM POLAND
AGATA KOSTRO-AMBROZIAK
Department of Invertebrate Zoology, Institute of Biology, University of Białystok,
ul. Świerkowa 20B, 15-950 Białystok, Poland; e-mail: [email protected]
Abstract.— A new tryphonine species Phytodietus (Weisia) januszi sp. nov. from
Poland is described and illustrated. A key to the Palearctic species of the subgenus Weisia
is provided.
±
Key words.— Ichneumonidae, Tryphoninae, Phytodietus, new species, key, Poland.
INTRODUCTION
TAXONOMY
The ichneumonids genus Phytodietus Gravenhorst, 1829 belongs to the subfamily Tryphoninae.
Four subgenera of this genus are recognized in
the modern time: Euctenopus Ashmead, 1900,
Neuchorus Uchida, 1931, Phytodietus Gravenhorst,
1829 and Weisia Schmiedeknecht, 1907. The subgenus Weisia with ten species was recorded in the
Ethiopian, Neotropical, Oriental and Palearctic regions (Schmiedeknecht 1907; Seyrig 1932; Gregor 1935;
Benoit 1953, 1959; Shaumar 1966; Kaur and Jonathan
1979; Kolarov 2003; Kasparyan 2007). The following three species of this subgenus were previously
known to occur in Palearctic: Ph. (W.) bayeri Gregor,
1935; Ph. (W.) elegans Schmiedeknecht, 1829 and
Ph. (W.) rhodopaeus Kolarov, 2003. Weisia differs
from other subgenera by the absence of areolet of the
fore wings.
In the present paper, the subgenus Weisia of
the genus Phytodietus is recorded from Poland
(Białystok) for the first time with description
of the new species Ph. (W.) januszi sp. nov.
A distribution (Fig. 1) and a key to the Palearctic species of the subgenus Weisia are provided.
A key to the Palearctic species of the subgenus Weisia Schmiedeknecht
1. Prepectal carina of mesopleuron absent . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . januszi sp. nov.
–. Prepectal carina of mesopleuron present . . . . . . . 2
2. Subapical crests of propodeum present . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . bayeri Gregor
–. Subapical crests of propodeum absent . . . . . . . . . 3
3. Mesosoma black with yellow spots . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . rhodopaeus Kolarov
–. Mesosoma orange with black and yellow marks . . .
. . . . . . . . . . . . . . . . . . . . . . elegans Schmiedeknecht
The terminology of the external structures is after
Yu (1997).
Phytodietus (W
Weisia) januszi sp. nov.
(Figs 2–10)
Etymology. The species is named in honour of Dr.
Janusz Sawoniewicz (Białystok), who collected the
specimens of this new species.
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A. KOSTRO-AMBROZIAK
Head. Clypeus separated from face, its apical
margin rounded without a median notch. Upper
tooth of mandible longer than lower one. Malar
space 0.50–0.56 times as long as basal width of
mandible (Fig. 2). Vertex and temples broadly
rounded. Antennae with flagellomeres 1 to 4 unspecialized, not appreciably broader than distal one.
Flagellum with 29–30 flagellomeres.
Mesosoma. Mesosoma polished, more or less
smooth. Notauli of mesoscutum absent (Fig. 3).
Pronotum without a discernible epomia. Prepectal
carina of mesopleuron absent; speculum without
pubescence. Propodeum polished, without any
carinae, with rather not dense hairs and without
transverse dorsal wrinkles (Fig. 4).
Wings. Fore wing length 4.5–5.5 mm. Hind wing
length 2.9–3.6 mm. Nervulus vertical; cubitus faint
beyond recurrent vein; second recurrent vein
vertical. Nervellus not intercepted; discoidella
completely lacking; radiella and cubitella end
beyond intercubitella, brachiella almost absent
(Figs 8–9).
Legs. Hind femur 5.0–5.5 times as long as wide.
Lateral spur of hind tibia 0.45–0.55 times as long as
first metatarsus (Fig. 5). Hind fifth tarsal segment
0.65–0.90 times as long as its third one (Fig. 6).
Metasoma. Tergites rather shiny, smooth, with
short not dense hairs. First tergite 1.3–1.5 times as
long as posteriorly broad; its median basal pit moderately deep, and its lateral margins not elevated.
Second tergite 0.75–0.95 times as long as broad
Figure 1. Distribution of the species of the subgenus Weisia Schmiedeknecht anteriorly. Apex of ovipositor as in Fig. 7.
in Palearctic region. S Ph. (W.) bayeri Gregor; „ Ph. (W.) elegans
Colour (Fig. 10). Head black; bright yellow:
Schmiedeknecht; Ì Ph. (W.) januszi sp. nov.; z Ph. (W.) rhodopaeus clypeus, mandible (without tooth), gena, the whole
Kolarov.
eye orbita, two longitudinal strips on the middle of
face; bright orange: sometimes clypeus and facial
strips. Scape and pedicel dorsolaterally yellow, venType material. Holotype (female): Poland, Białytrally and partly dorsally black; flagellum brownish.
stok (Pietrasze), in orchard, on apple-tree, 30.V.1996,
Pronotum black with wide yellow margins. MesoscuJ. Sawoniewicz. The type were deposited in the Musetum dark orange with median longitudinal black band
um and Institute of Zoology Polish Academy of Sciextends from its anterior margin to the middle and with
ences (Warsaw, Poland).
a pair of anterolateral yellow spots. Scutellum orange
Paratypes. Poland, Białystok (Pietrasze), in
with yellow apical and basal spots. Postscutellum yelorchard, J. Sawoniewicz: 2 females, 26.V.2007; 1 male,
low with orange middle. Axilla and axillary trought of
30.V.1996; 6 males, 12.V.2007, in the Museum and Instimetanotum black with yellow posterior margins. Mesotute of Zoology Polish Academy of Sciences; 2 females,
pleuron with black, orange and yellow parts. Tegula
2.VI.2003; 1 male, 30.V.1999; 2 males, 18.VI.2002;
and subtegular ridge yellow. Propodeum orange with
2 males, 11.V.2003; 3 males, 2.VI.2003; 1 male, 8.VII.
black base and apex. Metapleuron in general orange,
2003, in author’s collection in the Institute of Biology,
dorsally and ventrally black with bright yellow spots
University of Białystok (Poland).
Diagnosis. The new species may be easily distinnear hind coxae. Legs in general yellow. All femora
dorsally with a narrow black strips; the strip on the
guished from other palearctic species of the subgenus
hind femur short. Hind coxa dorsally and ventrally with
Weisia by the absence of prepectal carina and from
rather wide black strips. Fore and middle coxae and all
Ph. (W.) bayeri Gregor also by having the lateral spur
trochanters with small black spots. Metasomae tergites
on the hind tibia shorter than 0.55 of the basitarsus.
Description. Female. Body length (without antenblack with white apical margins. Sternites white with
black lateral spots. Ovipositor sheath black.
nae) 4.5–6.3 mm.
A NEW SPECIES OF THE GENUS PHYTODIETUS FROM POLAND
2
825
3
5
4
8
10
9
6
7
Figures 2–10. Phytodietus (Weisia) januszi sp. nov. (2) Head, front view; (3) mesoscutum, dorsal view; (4) propodeum and anterior part
of first tergite of metasoma; (5) spur of hind tibia and first tarsal segment; (6) 3rd–5th segments of hind tarsus; (7) apex of ovipositor; (8) fore
wing; (9) hind wing; (10) adult of female (holotype, lateral view), colour pattern.
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A. KOSTRO-AMBROZIAK
Male. Body length (without antennae) 4.5–5.9 mm;
fore wing length 3.6–4.6 mm; hind wing length 2.4–3.2
mm. Flagellum with 28–31 flagellomeres. Hind femur
4.5–5.0 times as long as wide. First tergite of metasoma
1.6–1.8 times as long as posteriorly broad. Face entirely yellow; hind femur dorsally with wide yellow strip;
hind tibia, sometimes the middle tarsus and mesosoma
much darker than that of the female; propodeum black
with only bright yellow lateral margins; axilla at the
base of scutellum with bright yellow spots. Otherwise
similar to female.
Distribution. Poland (Białystok).
ACKNOWLEDGEMENTS
Special thanks to Dr. J. Sawoniewicz for various
assistances. I thank Dr. D. Iwan for his valuable critical
remarks. My deep thanks to the referees, Dr. S. A.
Belokobylskij and Dr. J. Kolarov, for providing several
constructive suggestions and corrections to the manuscript. I am greatly indebted to Dr. J. Macek (National
Museum Prague, Czech Republic) who gave me
the opportunity to examine of the type of Ph. bayeri;
Dr. J. Kolarov (Bulgaria) for the loan of the holotype
of Ph. rhodopaeus, Dr. Y. Jongema (Wageningen University, the Netherlands) for the loan of the holotype of
Ph. elegans. My thanks also to Dr. J. Jelínek (Prague,
Czech Republic) for providing me some necessary literature. I am grateful to T. Koziołkiewicz for the SEM
photographs and Dr. J. Kupryjanowicz for the photograph of habitus of new species.
REFERENCES
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Received: September 6, 2007
Accepted: October 20, 2007