ArticlePDF Available

A new species of Pteromalus Swed. (Hymenoptera, Pteromalidae) from Western Canada. Türk. Bitk, Koruma Derg.

Authors:

Abstract and Figures

Pteromalus (s. strJ gal1icolus rı.sp, is described from British Columbia, Canada. All specımens of the new species were reared from the galls of Diastrophus kincaidii GilI. (Hymenoptera : Cynipidae on thimbleberry, Rubus parvülorus Nutt
Content may be subject to copyright.
Türk.
Bit.
Kor.
Derg.
(1980).
4 (3) : 155 - 160.
i
DeW
ıpetieı
of
P
ter
omaius
Swederus
(Hymenupterı
;
Ptemmılldae)
from
Western
[anada
M.
Doğanlar
*
iSUmmary
Pteromalus
(s.
strJ
gal1icolus
rı.sp,
is
deseribed
from
British
Columbia,
Canada.
All
specımens
of the
new
species
were
reared
from
the
galls
of
Diastrophus
kincaidii
GilI.
(Hymenoptera
:
Cyniptdae
ı
on
thimbleberry,
Rubus
parvülorus
Nutt.
Introduction
When the author was studying in British Columbia, Canada some interes-
ting pteromalids were
reared
from the galls of Diastrophus kincaidii
GıiU.
(Hymenoptera :Cynipidae) collected on thimbleberry, Rubus parviflo'rus Nutt.
at
Bumaby
between March
1977
and October
1978.
The
reared
pterornalid
specimens run to Pteromalus Swederus in
the
key to the
gerıera
of Pterornali-
nae
of
Graham
(1969),
but in the key to the female of the species of Habrocutus
and Pieromalus, it ends
at
the
couplet 85, and in
that
of male
at
couplet 65.
By checking the catologue of
Peck
(1963), and studies of
Graham
(1969)
and
Burks
(1975)
it was found
that
none of the species of Pteromaius was associ-
ated with any of the gall insects up to
that
time.
When the speoimens were eompared
wıith
the types of the Nearetic spe-
cies of Pteromalus in the Oanadian National Collection (CNC), Ottawa, On-
tario, it was found
that
the species is not conspesif'ic with any of them.
Same specimens were sent to Dr. Z. Boucek
of
the Commonwealth Insti-
tute of Entomologv,
c/o
British Museum (Natural History), London, England
for his opinion in regarding
the
new species and comparing
the
specimens with
the types of.
the
Palearctic
species. He
stated
that
the
specimens were Pteroma-
iu«,
subgen,
Habrocytus, which was recently
regarded
by Boucek and Gm-
ham
(1976), and
very
close to P. semotus (Walker). He
alsa
pointed
that
«the
puzzle in the idenbification is the host
dam,
because ihave not seen speci-
*
Atatürk
üniversitesi.
Ziraat
Fakültesi,
Bitki
Koruma
Bölümü,
Erzurum,
Turkey.
Alınış
(Beceived)
; 23.
ı.
1980.
mens of semotus from
any
galls» (In the Jetter of Dr. Z. Boucek
dated
5th
October, 1978).
Further
studies showed
that
the specimens belong to Pteromaius, sub-
gen. Pteromalus
s.str.
by having both mandibles
wiJth
four teeth,
and
distinctly
different
from
P.
semotus under different subgenus,
it
was recognized to be
an undescribed species of
the
genus.
Pteromalus (PteromalusJ gallicolus n.sp.
(Figs. 1-5)
Female
;
Lerıgth
2.4-2.9
mm. Body
dark
green
to blue green. Antennal
scape
and pedicellus fuscous, flagellum brown. Legs testaceous excepts coxae
which
are
concolorous with thorax,
and
tarsi
which
are
fuscous. Tegulae
black; fore wings hyaline or with a fuscous cloud below
marginal
vein.
Head (f'ig. 1) about 1.2 times as
broad
as mesoscutum, in dorsal view 2.35
timesas
broad as long: temples
slıightly
more
than
one third as long as eyes,
distinctly converging;posterior oeelli
separated
by 2.33times
their
major
dia-
meter
from the eyes,
POL
1.43- 1.50 OOL.
Malar
space
about 0.43times as long
as an eye. Both rnandibles with four teeth. Anterler
margin
of clypeus modera-
tely deeply
emarginate.
Head coarsely reticulate, excepts frons above toruli,
face
below toruli,
and
genae which
are
finely
reticulate;
clypeus strigose,
striae
hardly extending on to
face
and
genae, Antennae
inserted
well above
level of
ventral
edge of eyes, toruli about equidistant
from
median ocellus
and anterior
margin
of clypeus, scape slightly
shorter
than
an eye, reaching to
level of verrex
or
slightly above it; combined length of
pedicelhıs
and Ilagel-
lum almost equal to
breadth
of
head;
pedicellus twice as long
as
broad,
slightly longer
than
first
funicuIar segment; flagellum slightly
clavate
to-
wards distal;
first
four f'lagellar segments distinctly, fifth slightly longer
than
broad, sixth
quadrate;
dava
2.5 times as long as broad.
Thorax (f'ig. 2) about 1.42 times as long as
broad:
pronotal
eellar
dis-
tinctly margined, medially 1/7 to 1/8
as
long as mesoscutum, moderately reti-
culate with a
narrow
shiny
strlp
along
its
hind edge, Mesoscutum 1.65 to 2.00
as
broad
as
lorıg,
coarsely
reticızlate,
more finely
at
sides, Scutellum about as
broad as long, moderately convex, rnoderately finely reticulate. Propodeum
slightly less
than
half
as long as scutellum; median
area
about twice as
broad
as long, without a
costula,its
panel
irregularly
sculptured; median
carina
in-
complete; plicae
sharp
theoughout,
hardly
sinuate in middle,
their
posterior
paz-ts,
at
sides
of
nucha, converging slightly; nucha occupying about one
third
the median'length of propodeum, convex. finely
reticulate
as
that
of median
area:
spiracles elipsoidal,
separated
by about a
half
their
length from meta-
156
notum; callus slightly reticulate,
rather
sparsely pilose ; mesepisternum mo-
deratly
reticulate, with a
triangular,
nearly
smooth
area
below
base
of hind
wing. Legs moderately stout.
Fore
wing with lower
surface
of costal cell with
acomplete row of
hairs
and
some additional ones
scattered
over distal
half;
basal
cell
bare,
basal
vein with 1-3
hairs;
speculum open below, on upper
surface
of wing
extendirıg
below
marginal
vein for about
basal
1/3 length
of the
latter;
apioal
margin
ciliate;
marginal
vein 1.16 - 1.30 times as
lorıg
as
stigmal vein; postmarginal vein from slightly to distinctly
lerıger
than
mar-
ginal vein;
parastigma
less thicker
than
marginal
vein.
Fig.
ı.
Pteromalus
gallicolus
n.sp
..
female,
head
(100
X>.
Fig.
2.
Pteromalus
gallicolus
n.sp.,
Iemale,
thorax
(70
xı.
Fig. 3.
Pteromalus
gallicolus
n.sp.,
female,
gaster
(70
:Xı.
157
Gaster
(f'ig. 3) lanceolate,
from
slightly to distinctly longer
than
head
plus
thorax,
occasionally slightly
shorter,
2.16 times as long as
broad
; fi1'st four
tergites
nearly
smooth,
fifth
and
sixth f'inely
reticulate,
last
tergite
slightly
Ionger
than
its
basal
breadth.
Male :Length 1.4 - 2.3 mm. Differs
from
the
female
as fol1ows :
Gaster
with
pale
spot on second and
third
tergites.
Head
in
dcrsal
vicw
about twice as
broad
as long ; temples about two
third
as long as eyes.
Malar
space
ahalf as long as an eye;
oral
fossa
not
reaching
the
eyes, its
breadth
about
2.2 times
malar
space. Anterior
margin
of clypeus (f'ig. 4) shallowly
emarginate,
Base
of mandibles without
subcircular
pit,
Combined length of
pedicellus
and
flagellum slightly to distinctly longer
than
breadth
of head,
Scape
distinctly
above
the
level of
vertex
(fig.
4);
pedicellus
slightly
more
than
.twice
as
long as broad,
OJ7
times
as long as f'irst funicular
segment;
funicular segments filiform, distinct1y longer
than
broad:
clava
sligthly
wider
than
funicular segments,
3.25
times
as long
as
broad. Median
area
of propo-
deum
(fig,
5)
about
1.6 times
as
broad
as
long,
Posterıor
parts
of
plicae,
at
sides of nucha, near1y
paralel,
Gas.ter lanceolate,
slightly
shorter
than,
but
distinetly
narrower
than
thorax, 1.7 - 2.0
times
as long as broad.
Fig.
4.
Pteromalus
gallicolus
rı.sp.,
male,
head
(80
Xl.
1SR
Fig. 5.
Pteromalus
gallicolus
n.sp ,
male,
thorax
(70 Xl.
Holotype :
Female,
Burnaby,
B..ç.,Canada,
L5.XII.1977,
(Doğanlar)
(Iabo-
ratory
reared
from
the
gallof
Diasirophus
kincaidii
GilL. ex.
Rubusparvif-
lorus
Nuıtt.)
in CNC. .
Allotype :Male,
same
locality
and
host
as
holotype, 6.Xn.1977.
(Doğan
lar)
in CNC.
Parutypes
:
Same
locality
and
host
asholotvpe,
25
females,
20.X.1977-
4.1.197B,
(Doğanlar):
1female, 6.IV.1977
(Hoımgren);
43 males, 25.X.1977-
7.I.1978
(Doğanlar);
2
males
L2.IV.1977,
(Doğanlar).
Deposition of
paratvpes
:5females, 5males in
the
CNC; 5
females,
5ma-
les in
the
United
States
National Museum; 5females, 5
males
in British Mu-
seum
(Natural
History);
remainder
in
the
anthor
collection.
Biology
:
ALL
specimens
were
reared
from
the
galls
of Diastrophus kin-
caidtr on Rubus parviflorus in the period from20.XJ971 to
7.1.1978
in labora-
tory. Only
three
specirnens
were
swept on leaves of
R;parviflorus
in 6.-12. IV.
1977.
Remarks
: P. gallicolus resembles only P. bifoveolatus
Foerster,
and
P.
(Habrocytus)
semotus (Warker).
It
differs
from
the
former
by having in fe-
rnale
POL
1.4-1.5 OOL
(POLeq'ualto
or
very
slightly
greater
than
OOL in
bifoveolatus);
in
male
oral
fossa
not
near
ly
reaching
the
eyes,
and
ıts
breadth
2.2
times
.the
malar
space
(oral
fossa
extremely
wide,
reaching
nearly
to
the
eyes, its
breadth
II
to 34
times
the
malar
space
in
biiooeoiatus);
P. gallicolus
differs
from
P.
(H.)
semotus by
having
both mandibles with
four
teeth,
mar-
ginal vein
1.16-1.30
times
as long as
stigmal
vein (in semotus,
mandibular
for-
mula 3.4,
and
marginal
vein 1.35to 1.5 times as long
as
stigmal
vein)
Acknowleclgements
My
sineere
thanks
to Dr. Z. Boucek of
the
Commonwealth
Institute
of
Entomology,
c/o
British Museurn
(Natural
History), London, England,
and
to
Dr. C. M. Yoshimoto of
the
Biosystematics
Research
Institute,
Ottawa, Onta-
rio,
Canada
for
their
help in identifying
the
specimens,
and
for invaluable
adviee
and
criticism
during
the
preparation
of this
paper
;
and
to
Prof.
B.
P.
Beırne
of
the
pestology Centre, Simon
Fraser
University, Burnaby, B.C., Ca-
nada
for
his help
during
this work.
159
Öıet
Ba11
Kma,da'dıan
y;enıi
biırPteromalus
SWOederU5
(tfymenoptera
Pıteroma:liidae)
türü.
British
Columbıa,
Kanada'dan
Pteromalus
(s.str.l
gallicolus
yeni
tür
olarak
isimlendirilmiş
ve
tanımlanmıştır.
Yeni
türün
bütün
örnekleri
Rubus
parviflonls
Nutt.
dallannda
Diastrophus
kincaidii
Gill.
(Hymenoptera
:
Cynipidael
larvaları
tarafından
oluşturulan
gallerden
laboratuvar
koşullannda
üretilmiştir.
Referances
Boucek,
Z.
and
M.
W.
R.
de
V.
Graham,
1978.
British
chech-list
of
Chalcidoidea
CHymenoptera)
:
Taxonomic
notes
and
additions.
Entomologist's
Gazette,
29 : 228 - 229.
Burks,
B. D., 1975.
The
species
of
Chalcidoidea
deseribed
from
North
America,
North
of
Mexico
by
Francis
Walker
(Hyrnenoptera).
Bull. Br,
Mu
•.
nat.
HIst.
(Ent.).
32
(4)
:154-.158.
Graham.
M. W. R.
de
V.,
1929.
The
Pteromalidae
of
North-
westem
Europe.
İ~id
.•
Su:PPl. 16,
pp.
48&561.
Peck,
O., 1963. A
catologue
of
the
Nearetic
Chalcidoidea
CInsecta :
Hymenopteral.
Can.
Ent.
Suppl.
30,
pp.
712-732.
L6()
ResearchGate has not been able to resolve any citations for this publication.
dan Pteromalus (s.str.l gallicolus yeni tür olarak isimlendirilmiş ve tanımlanmıştır
  • British Columbıa
British Columbıa, Kanada'dan Pteromalus (s.str.l gallicolus yeni tür olarak isimlendirilmiş ve tanımlanmıştır. Yeni türün bütün örnekleri Rubus parviflonls Nutt. dallannda Diastrophus kincaidii Gill. (Hymenoptera : Cynipidael larvaları tarafından oluşturulan gallerden laboratuvar koşullannda üretilmiştir.
  • Z Boucek
  • M W R De
  • V Graham
Boucek, Z. and M. W. R. de V. Graham, 1978. British chech-list of Chalcidoidea CHymenoptera) : Taxonomic notes and additions. Entomologist's Gazette, 29 : 228 -229.
The species of Chalcidoidea deseribed from North America, North of Mexico by Francis Walker (Hyrnenoptera)
  • B D Burks
Burks, B. D., 1975. The species of Chalcidoidea deseribed from North America, North of Mexico by Francis Walker (Hyrnenoptera). Bull. Br, Mu•. nat. HIst. (Ent.). 32 (4) : 154-.158.
The Pteromalidae of North-westem
  • M W R Graham
  • V De
Graham. M. W. R. de V., 1929. The Pteromalidae of North-westem Europe. İ~id.• Su:PPl. 16, pp. 48&561.
A catologue of the Nearetic Chalcidoidea CInsecta : Hymenopteral. Can. Ent. Suppl. 30
  • O Peck
Peck, O., 1963. A catologue of the Nearetic Chalcidoidea CInsecta : Hymenopteral. Can. Ent. Suppl. 30, pp. 712-732.
Doğanlar): 1 female, 6.IV.1977 (Hoımgren); 43 males
197B, (Doğanlar): 1 female, 6.IV.1977 (Hoımgren); 43 males, 25.X.1977-