On the genus Casipteryx Taeger (Hymenoptera, Tenthredinidae) with description of a new species from China

2006·0.28 MB·

Acta Zootaxonomica Sinica, 31 (3): 617- 620 (July, 2006) ISSN1000(cid:1)0739
动物分类学报
ON THE GENUS CASIPTERYX TAEGER (HYMENOPTERA,
TENTHREDINIDAE) WITH DESCRIPTION OF A NEWSPECIES FROM
CHINA
WEI Mei(cid:1)Cai
CentralSouthForestry University, Changsha(cid:1) 410004, China; weimc@126. com
Abstract(cid:1) Anew species of Casipteryx Taeger isdescribed fromSichuan, China: Casipteryx maculatina sp. nov. The new
speciesdiffers fromthe twoknownspeciesof the genusin the supra(cid:1)antennal tubercles, scape, pedicel, basal half of the third
antennalsegment, anterior half of clypeus, dorsal side of each mandible, tegulae and the third abdominal tergite reddish
yellow, the forewing with a narrow infuscate cross band below stigma, cell 2Rs longer than 1R1 and 1Rs together, lateral
furrowsof postocellararea deep, flagellumlonger than headbreadth, the distance betweeneyesbelowas longas height of an
eye, and the tergitesof abdomenwithdistinctmetallicbronze tinge. The genericcharactersof Casipteryx Taegerareredefined
basedonresearch on the three known species of the genus. Akey to species of the genus isprovided. The type specimen is
depositedinInsectCollection of CentralSouth ForestryUniversity, Changsha, China.
Key words(cid:1) Hymenoptera, Tenthredinidae, Casipteryx, newspecies, China.
(cid:1) (cid:1) Casipteryx Taeger is a very small sawfly genus occipital carina developed and complete, lateral
erected by A. Taeger in 1991 based on a single furrows of frons distinct; eyes medium(cid:1)sized, distance
specimen of Allantus roborowskyi Jakovlev collected in between them below as long as or slightly longer than
Tibet, China, which is the only specimen for the height of an eye, inner margins strongly convergent
species till then. Nie and Wei (1997) described the downwards; supraclypeal suture absent; supra(cid:1)
second species of the genus from North China and also antennal tubercles strongly protruding, distance
the unknown male of Casipteryx roborowskyi between antennal sockets slightly broader than shortest
(Jakovlev) from Sichuan. Thethirdspecies of the rare breadth of inner orbit; frons flat; antenna short and
sawfly genus is described here. Based on new material stout, slightly longer than head width, pedicel longer
the generic characters of Casipteryx Taeger are than broad, third segment much longer than fourth
redefined and a keytoknown species is alsoprovided. segment, outer side of 4th(cid:1)9th segments with a distinct
The distributionpatternof the genus is Pattern (cid:2) furrow; breadth of anterior lobe of pronotum more
4of the Eastern Asian Pattern (Wei and Nie, 1997). than 4 times diameter of an ocellus and with a sharp
The typespecimen isdeposited in InsectCollection submarginal carina, dorsal(cid:1)lateral carina of pronotum
of Central South Forestry University, Changsha, also quitedistinct; ventral sides of prepleura (cervical
China. sclerites) meet broadly, ventral side of mesepisternum
with a thorn, katepimeron with a deep fovea;
Casipteryx Taeger, 1991
metepimeron small and narrow, without appendage;
Casipteryx Taeger, 1991. Entomol. Abh. Mus. Tierk., 54 (3): 72.
mesoscutellum elevated, usually with an acute peak;
Type species: Allantus roborowskyi: Jakovlev
cenchri small, distancebetweenthem2 timesas longas
1887. Original designation.
breadth of a cenchrus (CD= 2); metascutellum with a
Diagnosis. Bodyrobust. Clypeus and labrumflat,
short but quite broad anterior basin; first tergite of
clypeus emarginated, labrum very short and
abdomen elevatedandstrongly shiningwith averyfine
transverse, truncated or emarginated on anterior
middlesuture; inner tibial spur of front leg broad and
margin; malar space as longas diameter of an ocellus;
furcated; hindtibiadistinctlylonger thanfemur andas
each mandible with 5(cid:1)6 teeth, right mandible with a
long as tarsus, apical spurs about half as long as
dorsal tooth; mentum and palpi very short, labial
basitarsus, basitarsus as long as following3 tarsomeres
palpus stout and maxillary palpus slender; head
together; claw cleft, inner tooth shorter than outer
broader than long and weakly elongated behind eyes,
ThisresearchwassupportedbytheNational ScienceFoundationofChina(30371166, 30571504), alsopartlysupportedbyFOK YINGTUNG
EducationFoundation(81023) andTrans(cid:1)centuryTrainingProgrammeFoundationfor Talents, EducationMinistryofChina (2003).
Received20 Feb. 2006, accepted11 May2006.
617
(cid:1) (cid:1)6(cid:1)18(cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) ActaZootaxonomica Sinica动物分类学报(cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Vol. 31(cid:1) No. 3
tooth, basal lobe absent; vein cu(cid:1)a in forewing joining mandible, tegulae and third abdominal tergite reddish yellow;
forewingwith a narrow infuscate cross bandbelow stigma, cell 2Rs
cell 1M at its basal 1/3, anal cell with a short and
longerthan1R1 and1Rstogether; lateral furrowsofpostocellar area
erectcross vein; anal cell in hind wing sessile, cell M
deep; flagellum longer thanheadbreadth; tergites of abdomenwith
much shorter than cell Rs; each annulus of lancetwith distinctmetallicbronze tinge; distancebetweeneyes belowas long as
2pores; penisvalvesimple; hindwingin male without heightofaneye C. maculatina sp. nov.
Antenna, clypeus, dorsal side of mandible black, third tergite of
marginal vein; headand thorax denselypunctured.
abdomenyellow white; forewing without infuscate cross band, cell
Distribution. China.
2Rsshorter than1R1 and1Rs together; lateral furrows of postocellar
Goulet(1996) briefly discussed the relationships areaquiteshallowandindistinct; flagellumshorterthanheadbreadth;
among the genera of Tenthredinini and merged many tergitesofabdomenwithoutbronzetinge; distancebetweeneyesbelow
longerthanheightofaneye 2
genera into the jumbo genus Tenthredo L. In my
2. Head distinctlynarrowed behind eyes and the inner orbits distinctly
opinion his analysis on the monophyletic groups and
protruding in dorsal view; clypeus with two acute processes and
lineages in Tenthredinini was too simplified, and without rounded lateral lobe; anterior margin of labrum truncate;
mostly just a guess. It is too early to say or to do thirdantennal segment shorter than following 2 segments together;
bodyhairs about 2 times as long as diameter of anocellus; cell 2M
anything about the position of many genera related to
longer than broad; stigma black and narrow, 3 times longer than
Tenthredo before thorough investigations on the broad; ventral side of mesepisternum with an acute thorn,
morphology and cladistic phylogeny of the tribe mesoscutellumstrongly elevatedwithacute peak; head dorsally and
Tenthredinini being undertaken. Tenthredo is really thoraxcoarsely and densely punctuated without shining interspaces;
secondtergite of abdomenwithout white spot laterally; serrulae flat
toolarge for anything. It is a better choice at present
with23(cid:1)25fineteeth C. roborowskyi (Jakovlev)
to retain those genera, such as Jermakia, Propodea,
Headdistinctlydilatedbehindeyesandtheinnerorbitsnot protruding
Casipteryx, Metallopeus andPeus, etc.. indorsalview; clypeuswithoutacuteprocessesbutwithroundedlateral
This genus is endemic to China at present. Three lobes; anterior margin of labrum incised; third antennal segment
longer than following 2 segments together; body hairs shorter than
species have been described including the new species
diameter of anocellus; cell 2M as long as broad; stigma pale and
described herein. They can be easily recognized using broad, about2timeslongerthanbroad; ventralsideofmesepisternum
thefollowing key. withanobtusethorn, mesoscutellumweaklyelevated, apexnot quite
acute; headdorsallyandthoraxdenselypunctuatedwithfine shining
Keytospecies of the genus Casipteryx Taeger
inter spaces; second tergite of abdomen with a large white spot
1. Supra(cid:1)antennal tubercles, scape, pedicel, basal half of the third laterally; serrulaeobliquewith12fineteeth
antennal segment, anterior half of clypeus, dorsal side of each C. stigma Nieet Wei
Figs. 1(cid:1)5. Casipteryx maculatina sp. nov. 1. Headindorsalview. 2. Clypeusandlabrum. 3. Mesepisternuminlateral
view. 4. Sheathinlateralview. 5. The8th(cid:1)9th serrulae.
July, 2005 魏美才: 沟角叶蜂属分类研究 (膜翅目, 叶蜂科) 并记一新种 619 (cid:1)
Casipteryx maculatina sp. nov. (Figs. 1(cid:1)6) mostly of each leg, anterior side of front femur
mostly, apices of middle and hind femora, each tibia
!. Body length 10(cid:2)5mm. Black, abdominal
mostly and tarsus yellow brown; wings sub(cid:1)hyaline,
tergites with distinct metallic bronze tinge; supra(cid:1)
forewing with a narrow infuscate cross band below
antennal tubercles, scape, pedicel, basal half of the
stigma, vein C and stigma mostly pale brown, other
third antennal segment, anterior half of clypeus,
veins and extremebaseofstigma brownishblack. Body
dorsal side of each mandible, tegulae and third
hairs silvery.
abdominal tergite reddish yellow; second trochanter
Figs. 6(cid:1)8. Adult. 6. Casipteryx maculatina sp. nov. 7. Casipteryx stigma Nie et Wei. 8. Casipteryx roborowskyi
(Jakovlev, 1887).
(cid:1) (cid:1) Headin dorsal view as in Fig. 1; head distinctly deep middle furrow, hind apex of prescutum quite
and roundly narrowed behind eyes, inner orbits acute; mesoscutellum strongly elevated with an acute
slightly protruding; clypeus with two acute processes, peak; posttergite slightly elevated with an obtuse
anterior margin of labrum shallowly incised (Fig. 2); middlecarina; mesepisternumstronglyconvexinlower
postocellar area weakly elevated, longer than broad, part, its ventral side with an acute thorn (Fig. 3).
lateral furrows quite distinct and slightly curved, Stigma narrow and about 3 times longer than broad,
interocellar and postocellar furrows fine; postorbit in cell 2Rsslightlylonger than1R1and1Rstogether, cell
lateral viewaboutas broadas eye; eyeslarge, distance 2M longer than broad; cell M in hindwing about half
between eyes below as long as height of an eye; sizeof cell Rs. Body hairs mostly slightly longer than
flagellum of antenna distinctly longer than head diameter of an ocellus. Head dorsally and thorax
breadth, third antennal segment about as long as coarsely and densely punctuated without impunctate
fourth and fifth segments together, each of sixth to shining interspaces, clypeus and labrum sparsely
ninth segments broader than long. Prescutum with punctured and strongly shining, posttergite shallowly
(cid:1) (cid:1)6(cid:1)20(cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) ActaZootaxonomica Sinica动物分类学报(cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Vol. 31(cid:1) No. 3
and sparsely punctured, metascutellum polished, Distribution. China, Hebei, Shanxi, Inner
impunctate; mesepimeron densely microsculptured; Mongolia, Ningxia.
first abdominal tergite impunctate, strongly shining,
Casipteryx roborowskyi (Jakovlev, 1887) (Fig. 8)
second and third tergites sparsely punctured with fine
Allanthus (recte Allantus) roborowskyi: Jakovlev, 1887. Horae Soc.
microsculptures, other tergites densely punctured and Ent. Ross., 21: 160.
microsculptured, less shining. Sheath inlateral view as Casipteryxroborowskyi: Taeger, 1991. Entomol. Abh. Mus. Tierk.,
54 (3): 72.
in Fig. 4. Lancet with 22 serrulae, annular spines
bands broad, middle serrulaeoblique, each with about Specimens examined. 1!, Miyaluo, Li County,
8(cid:1)9 outer subbasal teeth, 8th to9thserrulae as in Fig. Sichuan, 2800 m, 15 Sep. 1963; 1 ∀ , Kangding,
5. Sichuan, 12 Sept. 1938, ZHOU Yao; 1!, Pengta,
∀. Unknown. Kangding, Sichuan, 28 Aug. 2005, SHI Fu(cid:1)Ming.
Holotype !, Paomashan (30#03∃N, 101#58∃E, Distribution. China, Sichuan, Tibet.
alt. 2505 m), Kangding, Sichuan, 29 July 2005,
REFERENCES
ZHOU Hu.
Distribution. China, Sichuan. Goulet, H. 1996. RevisionoftheNearcticspeciesofthearcuata groupof
thegenus Tenthredo with notes onthe higher classification of the
Etymology. The new species is named after the
Tenthredinini ( Hymenoptera, Symphyta, Tenthredinidae).
specific body color that is black with a few reddish
Contrib. Amer. Ent. Inst., Gainesville, 29 (2): 1(cid:1)135.
yellow maculae. Jakovlev, A. 1887. Insecta initinerecl. N. Przewalski inAsia Centrali
Remarks. See the above key for diagnosis of the NovissimeLecta %. Tenthredinidae. Hor. Soc. Ent. Ross., 21:
new species. 160(cid:1)164.
Taeger, A. 1991. Zwei neuepal(cid:1)arktischeBlattwespengattungenausder
Casipteryx stigma Nie et Wei, 1997 (Fig. 7) Unterfamilie Tenthredininae (Insecta, Hymenoptera, Symphyta:
Casipteryx stigma Nie et Wei, 1997. Entomotaxonomia, 19 (suppl.): Tenthredinidae). Ent. Abh. Mus. Tierk., 54 (3): 71(cid:1)95.
92. Nie, H(cid:1)YandWei, M(cid:1)C1997. TaxonomicstudyonthegenusCasipteryx
Taeger(Hymenoptera: Tenthredinomorpha). Entomotaxonomia, 19
Specimens examined. Holotype 1 !, Yinchuan,
(Suppl.): 91(cid:1)94.
Ningxia, No. 0281. Paratypes: 1 !, Suburb of
Wei, M(cid:1)C and Nie, H(cid:1)Y 1997. Studies on the biogeography of
Hohhot, Inner Mongolia, 16 July1991; 1!, Shanxi, Tenthredinoidea(Hymenoptera) %. The distribution patterns and
July 1951; 1 ∀ , Rehe, Hebei, Aug. 1955; 1 !, migration routes of the endemic genera in Eastern Asia.
Hoyepingchou, 9Aug. 1933. Entomotaxonomia, 19 (Suppl.): 45(cid:1)157.
沟角叶蜂属分类研究 (膜翅目, 叶蜂科) 并记一新种
魏美才
中南林业科技大学(cid:1) 湖南长沙(cid:1) 410004, [email protected]
摘(cid:1) 要(cid:1) 修订了沟角叶蜂属的属征, 编制了已知种分种检索 等, 与本属已知2种均明显不同; 此外, 新种中胸腹板具强
表。记述沟角叶蜂属 3 种, 含 1 新种: 红斑沟角叶蜂 腹刺突, 侧板刻纹粗糙不平, 无光滑间隙, 小盾片尖锥型隆
Casipteryx maculatina sp. nov., 新种触角窝上突、触角基部 起, 后头两侧显著收缩, 唇基前缘两侧亚中部具 1尖刺突,
2节全部、第3节基半部、唇基端半部、上颚背侧大部、翅 腹部第2 背板两侧黑色, 无白斑, 前翅2M室长大于宽等与
基片、腹部第3背板桔褐色, 前翅翅痣下具烟色横带, 2Rs C. stigma Nie et Wei不同; 上唇端部具弧形缺口, 内眶背面
室稍长于1R1+ 1Rs室之和, 腹部背板具金属铜色光泽, 单 观不明显突出于复眼之外等, 与C. roborowskyi (Jakovlev) 也
眼后区侧沟显著, 触角鞭节长于头宽, 第3 节约等于其后2 不相同。新种模式标本保存于中南林业科技大学昆虫标本
节之和, 复眼下缘间距等宽于复眼高, 体毛稍长于单眼直径 馆。
关键词(cid:1) 膜翅目, 叶蜂科, 沟角叶蜂属, 新种, 中国.
中图分类号(cid:1) Q969(cid:2)542(cid:2)6