Two new species of the genus Mesopolobus Westwood (Hymenoptera, Pteromalidae) from China

2005·0.73 MB·

Acta Zootaxonomica Sinica, 30 (4) : 831- 834 (Oct. , 2005) ISSN 1000 0739
动物分类学报
TWO NEW SPECIES OF THE GENUS MESOPOLOBUS WESTWOOD ( HY
MENOPTERA , PTEROMALIDAE) FROM CHINA
SUN Lei1,2, XIAO Hui2, XU Hong Fu1
1. Collegeof Plant Protection, ShandongAgricultureUniversity, Taian　271018, China
2. Instituteof Zoology, ChineseAcademyof Sciences, Beijing　100080, China
Abstract　Two newspecies of Mesopolobus Westwood (Hymenoptera, Ptromalidae) , Mesopolobus mesolatussp. nov. , reared
from the mature larva andpupa of Coleophora sinensis Yang (Lepidoptera, Coleophoridae) , and M. mesoeminulus sp. nov.
are describedfrom China.
Key words　Hymenoptera, Pteromalidae, Mesopolobus, newspecies, China.
　　The taxonomic state of Mesopolobus is revised in 2004). However, only three species were recorded till
Pteromalinae of Pteromalidae with the following cha now (Herting, 1976; Yang and Gu, 1995; Yang,
racters: antenna usually with 3 anelli, toruli insert 1996). In this study, two new species, M. mesolatus
clearly below centre of face; right mandible 4 toothed sp. nov. and M. mesoeminulus sp. nov. , are de
and left mandible 3 toothed; occipital without carina; scribed from China. M. mesolatus sp. nov. was
pronotum reticulate and posterior edge with conspicu reared from the mature larva and pupa of Coleophora
ous shiny strip, pronotal collar with abrupt edge but sinensis Yang (Lepidoptera, Coleophoridae).
not carinate; notauli incomplete; scutellum without The terminology generally follows that of Gary
frenal line; propodeum usually with median carina Gibson (1997). We use‘frons width’to describe the
complete, and plica developed or at least in posterior shortest distance between two eyes. Body length is
third, spiracles elongate; mesepisternum with upper measured in millimeters (mm). Other measurements
triangular areas smooth; fore wing with speculum as a are relative. All the materials were card mountedspec
bare strip and extending to marginal vein; costal cell imens and deposited in Institute of Zoology, Chinese
on upper surface bare; gaster sessile. The genus Halv Academy of Sciences (IZCAS).
ka Bouˇcek is close to Mesopolobus (Bouˇcek, 1993) ,
Mesopolobus Westwood, 1833
but Halvka can be briefly recognized by its clypeus
Mesopolobus Westwood, 1833: 443. Typespecies: M. fasciiventris
produced, propodeum without plica, antennal clava Westwood, by original designation and monotypy; Graham, 1957:
distinctly large and almost as long as 5 to 6 preceding 217236, 1969: 638681; von Rosen, 1958: 220230, 1960: 115,
1629; Bouˇcek,1971:310,1974:265,276,1988:432433,1991:
segments combined.
203; Bouˇcekand Graham, 1978: 228.
The numerous synonyms of Mesopolobus include
Platymesopus Westwood, Platyterma Walker, Ambly Key to Chinese species of Mesopolobus (Female)
1. Medialarea of propodeumwithstrongreticulation, about asstrongas
merus Walker, Eutelus Walker, Euamblymerus
that onthe discofscutellum …………………………………………
Hincks, Ahlbergiella von Rosen (von Rosen, 1958) ; ………………………… Mesopolobussubfumatus (Ratzeburg)
Xenocrepis F ster (von Rosen, 1960) ; Selitrichus Medialarea of propodeumonlywithdelicate reticulation …………2
Rondani (Bouˇcek, 1974) ; Asemantus F ster, Synto 2. Anterior marginof clypeusincised medially; pronotalcollarabout1/6
3 timesaslongas mesoscutum …………………………………………
mocera F ster, Disema F ster, Baeoponerus Masi
………………………… Mesopolobus mesoeminulus sp. nov.
(Graham, 1969) , Zacalochlora Crawford (Bouˇcek
Anteriormarginofclypeustruncateoronlyshallowlyemarginatemedi
1971) , Urielloides Girault, Paranogmus Girault & ally; pronotal collar at most 1/7 times as long as mesoscutum or if
Dodd, Anogmoidea Girault (Bouˇcek, 1988) , Sturovia longerthenclypeus notincised ……………………………………3
Bouˇcek (Bouˇcek and Graham, 1978) and Isoptrynea 3. Propodeumwith mediancarina absent ………………………………
Szelényi (Bouˇcek, 1991). Mesopolobus distributes …………………………… Mesopolobussuperansi Yangand Gu
π Propodeumwith mediancarinacomplete …………………………4
widely in the world with 117 describedspecies (Noyes,
4. Propodeum with plica distinct and complete; antenna with F1 F5
Theproject wassupportedbyNational NaturalScience Foundationof China (30370188) ,partiallybyNationalScience Fundfor Fosterin2g Tal
entsinBasic Research (NSFCJ0030092).
Correspondingauthor.
Received10Apr. 2005, accepted28June2005.
831
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shorter gradually; gaster ovate ……………………………………… propodeum medially width∶length as 30∶15, marginal
……………………………… Mesopolobus mesolatus sp. nov. vein 46, postmarginal vein 40, stigmal vein 23, gaster
Propodeumwith plica distinct in posterior half; antenna with F1 F5
…… length∶width as 114∶74, mesosoma length 102, head
equallong; gasterlanceolate Mesopolobus mongolicus Yang
plus thorax 135.
Mesopolobus mesolatus sp. nov. (Figs 1 4)
Female. Body length 1 7 2 5mm. Head and tho
rax green with copper reflections; gaster dark green,
and brown reflections on posterior of each tergite. An
tenna brown except scape, pedicel and the first anellus
testaceous. Leg with coxa concolorous with thorax, fe
mur and tibia sometimes pale fuscous medially, apical
segment of tarsus brownish, the rest testaceous. Tegula
yellow. Wing hyaline, veins yellow.
Head in front view (Figs 1) torulus insertion a
little above ventral edge of eye. Clypeus with radiating
Figs 1 4. Mesopolobus mesolatus sp. nov. , female. 1.
striate, lower margin of clypeus slightly emarginate.
Headinfront view. 2. Antenna. 3. Headin dorsal view.
Antenna (Figs 2) formula 11353, not clavate, scape 4. Propodeumin dorsal view.
not reaching anterior ocellus; pedicel and flagellum
Male. Unknown.
combined distinctly less than head breadth; three anelli
Etymology. The specific name is from the Latin
transverse; F1 broader than pedicel; succeeding funic
words mesoplus latus (broad).
ular segments shorter and broader gradually; each fu
Holotype ♀, China, Shanxi, Qinyuan (36°30′
nicular segment with a single row of sensilla and dense
N, 112°19′E) , June 1993 andJune 1994 (recorded on
setae. Head in dorsal view (Figs 3) broader than tho
label) , collected by LIU Yang. Paratypes 4 ♀♀,
rax; vertex distinctly protuberant; temple slightly
same data as holotype, reared and emerged from the
curved. Relative measurements: head width78, height
fully grown larva and pupa of Coleophora sinensis
63, dorsal length 36, frons width 47, eye height 39,
Yang (Lepidoptera, Coleophoridae).
eye length 26, oral fossa 35, malar space 18, antennal
Comments. The new species resembles M. longi
torulus to clypeal margin 20, antennal torulus to ante
collis Graham (based on Graham, 1969: 671 673) in
rior ocellus 35, scape length 32, pedicel in dorsal view
general morphology by long pronotum collar which
length: width as 11∶5, F1 length: width as 7 5∶6 0,
about 1/6 times as long as mesoscuteum and ovate
clava length: width as 16∶8, POL∶OOL as 19∶9, tem
gaster. The female of M. longicollis can be recog
ple 9, posterior ocellus long diameter 4.
nized by the following characters: mesoscutum width
Pronotum collar medially almost about 1/6 times
1 45 1 50 times as long as length (1 78 times in M.
as long as mesoscutum, with raised anterior margin.
mesolatus) ; propodeum width 1 50 1 65 times as long
Mesoscutum reticulate, with piliferous punctures;
as length (2 times in M. mesolatus) ; fore wing with
scutellum very nearly as long as broad, frenumslightly
basal vein bare ( M. mesolatus with several setae) ;
distinct with larger reticulations than disc of scutellum.
spiracles short ovate (long ovate in M. mesolatuss).
Dorsellum very short, smooth, separated from the
scutellum by a longitudinally costate suture. Mesopolobus mesoeminulus sp. nov. (Figs 5 9)
Propodeum (Figs 4) medially distinctly less than h2alf
Female. Body length 2 0 2 7mm. Head and tho
of scutellum length; median carina and plica complete
rax dark green with metal reflections, gaster infuscate.
and distinct; panels of median area finely, obliquely
Antenna black brown except the first anellus testa
strigose reticulate, with some short longitudinal carin
ceous. Leg testaceous except coxa concolorous with
ulae anteriorly; a small fovea at each anterior corner;
thorax, apical segment of tarsus brown. Tegula
nucha short and smooth. Fore wing, basal vein with
brown. Wing hyaline, veins testaceous.
several setae, basal cell bare. Gaster ovate, slightly Head in front view (Figs 5) lower edge of torulus
broader and longer than mesosoma, shorter than head
slight below ventral edge of eye. Clypeus with radia
plus thorax; tip of hypopygium at 1/2 length of
ting striate, anterior margin of clypeus strongly
gaster. Relative measurements: mesoscutum width∶
emarginated with median incision flanked by two
length as 72∶41; scutellum width: length as 36∶38; teeth. Antenna (Figs 6) formula 11353, not clavate,
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Oct. , 2005 孙　磊等: 中国迈金小蜂属二新种 (膜翅目, 金小蜂科) 833 　
scape almost reaching anterior ocellus; pedicel and lum combined 78; scape length: width as 35∶6; gaster
flagellum combined less than head width; three anelli length: width as 110∶68.
transverse; F1 as broad as pedicel; succeeding funicu
lar segments longer than broad, F1 F3 quadrate, F4
and F5 subquadrate; each funicular segment with a
single row of sensilla and two rows of setae. Head in
dorsal view (Figs 7) a little broader than mesosoma;
vertex slightly protuberant; temple slightly curved.
Relative measurements: head width 88, height 66,
dorsal length 38, frons width 53, eye height 35, eye
length 26, oral fossa 40, malar space 23, antennal
torulus to clypeal margin 23, antennal torulus to ante
rior ocellus 37, pedicel in dorsal view length∶width as
Figs 5 9. Mesopolobus mesoeminulus sp. nov. 5 8. fe
13∶6, F1 length∶width as 9∶6, clava length∶width as
male. 5. Head in front view. 6. Antenna. 7. Head in
19∶9, POL∶OOL as 21∶11, temple 10, posterior ocel
dorsal view. 8. Propodeumin dorsal view. 9. Male, an
lus long diameter 5. tenna.
Pronotum with a posterior smooth strip posterior
Etymology. The specific name is from the Latin
ly; collar long, medially about 1/6 times as long as
words mesoplus eminulus (protuberant).
mesoscutum, with raised anterior margin. Mesoscutum
Holotype ♀, China, Tibet, Lhasa (29°39′N,
strongly reticulate, dull, with indistinctly piliferous
91°08′E) , 3650 m, 27 Aug. 2001, collected by ZHU
punctures, the reticulations on mesoscutumsmaller and
Chao Dong. Paratypes: 9 ♂♂, 2 ♀♀, same data as
shallower than on pronotal collar, those on scutellum
holotype; 1 ♀, Tibet Xigazê(29°16′N, 88°51′E) ,
smaller still; scutellum without frenal line, frenum in
3960 m, 30 Aug. 2001, collected by ZHU Chao
distinct. Dorsellum with a narrow smooth transverse
Dong.
crest separated from scutellum and propodeum respec
Biology. Unknown.
tively by a longitudinally costate suture. Propodeum
Comments. The new species is closely allied to
(Figs 8) median carina and plica complete; lateral
M. semenis Askew (based on Askew and Blasco
panel striae delicate and oblique, with longitudinal ca
Zumeta, 1997) , both have a long pronotal collar and
rina on both margin; nucha short and smooth. Fore
incised clypeus. The female of M. mesoeminulus dif
wing with basal vein bare or with several setae, basal
fers from M. semenis by the following characters:
cell bare; space betweenstigmal vein and postmarginal
right mandible 4 toothed, left mandible 3 toothed
vein with setae on upper surface. Gaster long ovate, a
(both mandibles 4 toothed in M. semenis) ; pronotal
little sharply pointed; slightly narrower but longer
collar with posterior smooth strip ( M. seminus with
than mesosoma; shorter than head plus thorax; tip of
out) ; marginal vein 1 47 times as long as stigmal vein
hypopygium slightly more than 1/2 length of gaster.
(2 36 times in M. semenis) ; space between stigmal
Relative measurements: mesoscutum width: length as
vein and postmarginal vein with setae on upper surface
84∶50; scutellum width: length as 44∶46; propodeum
(bare in M. semenis) ; gaster long ovate, 2 03 times
medially width: length as 34∶17, marginal vein 47,
as long as broad (1 8 times in M. semenis).
postmarginal vein 43, stigmal vein 32, gaster length:
width as 118∶58, mesosoma length 112, head plus tho REFERENCES
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中国迈金小蜂属二新种 (膜翅目, 金小蜂科)
孙　磊1,2　肖　晖2　徐洪富1
1. 山东农业大学植物保护学院　泰安　271018
2. 中国科学院动物研究所　北京　100080
摘　要　记述了金小蜂科金小蜂亚科迈金小蜂属 Mesopolobus 华北落叶松鞘蛾 Coleophora sinensis Yang老熟幼虫和蛹。模
Westwood, 1833 2新种: 隆胸迈金小蜂 M. mesoeminulussp. 式标本保存于中国科学院动物研究所动物标本馆。
nov. 以及宽胸迈金小蜂 M. mesolatussp. nov. , 后者寄生于
关键词　膜翅目, 金小蜂科, 迈金小蜂属, 新种, 中国.
中图分类号　Q969 545 3
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