Systematics of Chinese species of the ant genus Pristomyrmex Mayr (Hymenoptera: Formicidae).

4 Pages·2002·0.16 MB·English

by  Xu, Z.

., . .
ENTOMOLOGIA SINICA Vol.9, No.4, December2002,pp.69—72 69
SYSTEMATICS OF CHINESE SPECIES OF THE ANT GENUS
MAYR (HYMENOPTERA: FORMICIDAE)
PRISTOMYRMEX
XU Zheng-hui" and ZHANG Zhi-ying"
1) Faculty ofResources, Southwest Forestry College, Kunming 650224, China;
2)Institute ofEcology and Geobotany, Yunnan University, Kunming, Yunnan 650091, China
(Received May 21, 2001; accepted Dec. 3, 2002)
Abstract This paper examines the systematic relationships of four Chinese species of Pristomyrmex Mayr , i.e
ioPvsfi.epswrobourvatepihvideicersedpnsifnYooourfsnutpsnhreaoEpnkmonedProeraywolv,nisnCpPchi.einneifessosccrelumosrospvseeeacdt.ioeiFsnPo.w.raeTrlphd,uenaPgnn.edenwhsposuoMpnkeag-cyelirnie,skse,bM,uaPity.nri,pnhrnoaefPnri.ulmeUauhvrsaigeniswunpU.douofsnrmossavupnm..d,ionbfcoloavell.liewtciAtmtehnkdkeamyrdo.butsahntesdmectydtrocotponoinocvtaw!heoxr,rkamempredfUcoooarrslsetaaselr
node broad and with dorsum relatively straight. The type specimens are deposited in the Insect Collection, Faculty of
Resources, Southwest Forestry College, Kunming, yunnan Province, China.
Keywords hymenoptera, formicidae, pristomyrmex, taxonomy, China
The ant genus Pristomyrmex Mayr is distribut- sp. nov. from the tropical rain forests of southern
ed in the Old Word tropics and subtropics (Bolton, Yunnan Province is described. Up to date, 4 spe-
1ha9v9e5ab)e.enAcrceocrodridnegd taondBotlhteonIn(d1o9-9A5usbt)ra,li3a8n sRpeegciioens cies oSftaPnrdiasrtdommyeramseuxrehmaevnetbseaenndreicndoircdeesd airneCahsindae.-
i(s19t6h5e, d1is9t6r8i)butiroenvisceednttehre oAfusttrhaeliagnensupse.cieTsayalnodr fliennegdthi,n BHoWlt-oHne(a1d981w)id:thT,L-TCoIt-aCleplheanlgithc, iHnLd-exHea=d
Bnooltroenvi(si1o9n81o)f rsepveicsieeds tfhoeunAfdroetlrospeiwchaelrespehcaisesbebeunt H=WxSL10X0 /10H0L,/ SHLW-S,capPeW-lPernogntho,talSl-wSicdatphe, inAdLe-x
Alitrunk length, ED-Maximum diameter of eye. All
done to date.
Three pristo-species were previously known in measurements are expressed in millimeters. The
China. Forel (1912) described Pristomyrmex bre- type specimens are deposited in the Insect Collec-
vispinosus r. sulcatus var. formosae from Taiwan tion, Faculty of Resources, Southwest Forestry Col-
Province. However, Bolton (1995b) treated this lege, Kunming, Yunnan Province, China.
variety as invalid causing its name to be unavail- Genus Pristomyrmex Mayr
able Recent reexamination of this variety by Lin et
al .(1998) has resulted in its validity being rein- Pristomyrmex Mayr, 1866, Verh. Zool.-Bot.
sta.ted and it being raised to species rank, i.e. P . Ges. Wien 16: 903. Type-species: Pristomyrmex
formosae Forel. Wheeler (1930-1931) reported P pungens , by monotypy
pungens Mayr from eastern China. In the 1990 s
Chou etal. (1991) recorded P. pungens Mayr Key to Chinese species of Pristomyrmex based on work-
from Taiwan Province. Wu et al . (1995) reported er caste
CPhi.npau.ngTeannsgMeatyrali.n (no1r9t9h5e)rnr,eecaosrtdeerdn aPn.d spouuntgheenrsn 1. Parpoaniortuofmswhiotrhtasppianiersof spines or dents. Propodeum wit9h
Mayr and P. brevispinosus Emery in China. In this - Pronotum without spines and dents. Propodeum with a
paper, a new species of the genus, P. hamatus pair of long spines
-
,.,.. .
70 ENTOMOLOGIA SINICA Vol. 9, No. 4, December2002
2. Pronotum with a pair of slender and acute spines. Post- teriorly, petiolar node inclined backward, anterior
p3e.t5iol-ar4.n8odemmlon(gFeirgst.han1 b-ro4ad). (BCohdiynal:argYeru,nnwainthaTnLd ccoornnveerx,higanhteerritohranfapcoestesrlioopre-olnieke,.doProssatlpeftaicoelasrlinghotdley
Guangdong; Japan; Myanmar; Indonesia)
short and high, strongly inclined backward. In
P. brevispinosus Emery
- Pronotum with a pair ofshort and blunt dents Postpetio- dorsal view, petiolar node nearly square, postpetio-
.
lar node broader than long. Body smaller, with TL 2.8 lar node transverse and rectangular. Mandibles
-3.4mm (China: Taiwan) P. formosae Forel sparsely, longitudinally and coarsely striate. Head
3. Inner margin of mandible without tooth. In dorsal view, and alitrunk largely foveolate, interface formed a
apices of propodeal spines straight and sharp. In profile coarse reticulation system. Petiole and postpetiole
view, dorsum ofpetiolar node narrow and convex (Figs longitudinally and coarsely striate. Caster smooth
5-8) (China: Liaoning, Shandong, Jiangsu, Shang- and shining. Head and alitrunk with abundant erect
hai, Zhejiang, Anhui, Jiangxi, Hubei, Hunan, Guang-
long hairs and suberect short hairs. Petiolar node
dong, Guangxi, Hainan, Sichuan, Yunnan, Tibet; Ja-
with a pair of erect hairs postpetiolar node with 2
pan; Philippines; Malaysia) P. pungens Mayr ,
- Inner margin of mandible with a distinct tooth In dorsal pairs of suberect long hairs. Caster with sparse de-
.
view, apices of propodeal spines curved inward and pressed short pubescence, without erect hairs.
hook-like. In profile view, dorsum of petiolar node Scapes, femorae and tibiae with abundant suberect
broad and straight (Figs. 9-12) (China: Yunnan) hairs. Body reddish brown in colour, appendages
• P. hamatus sp no\ yellowish brown.
.
Pristomyrmex hamatiis sp. nov. (Figs.9-12) Paratype workers: TL 3.2 - 3.4, HL 0.93 -
HW
Holotype worker: TL 3.2, HL 0.95, HW 0.95, 0.88 -0.90, CI 95 -97, SL 0.88
0.90, CI 95, SL 0.88, SI 97, PW 0.63, AL 0.90, SI 97 -100, PW 0.60 -0.63, AL0.88-
0.90, ED 0.16. Head nearly circular, slightly 0.90, ED 0. 15 - 0. 16 (5 individuals measured ) .
longer than broad Occipital margin nearly straight As holotype, but body yellow to reddish brown in
.
weakly emarginated in the middle occipital corners colour.
,
Holotype: worker. No. A97-1165, 660 m,
rounded, lateral sides roundly convex. Inner mar-
gin of mandible with a tooth in the center mastica- Cuipingfeng, Menglun Town, Mengla County,
,
tory margin with 4 teeth and a short diastema be- Yunnan Province, Aug. 10, 1997, collected in karst
tween the 2nd and 3rd teeth Clypeus with a longi- monsoon forest by Mr. LIU Tai-yong. Paratypes: 1
.
worker, No. A98-993, 650 m, Menglun Town,
tudinal central carina, anterior margin roundly con-
vex and armed with 8 blunt crenatures Frontal car- Mengla County, Yunnan Province, Sep. 15, 1998,
inae long, extending backward beyond. the posterior collected by YANG Xiao-dong; 5 workers, with
margin level of the eyes Antennal scrobes shallow same data as No. A98-993, but No. A98-1012,
.
and distinct. Antenna with 11 segments, scape sur- Feb. 2, 1998, collected by ZHANG Zhi-ying; 1
passing occiptal corner by about 1/4 of its length, worker, No. A97-1687, 900 m, Manzhuang Vil-
antennal club consisted of the 3 apical segments. lage, Mengla County, Yunnan Province,Aug. 14,
Eyes situated on the mid-line of the head and ex- 1997, collected in semi-evergreen monsoon forest
by HE Yun-feng.
truding outwards laterally. In profile view, dorsum
of alitrunk roundly convex, sloping downwards at This new species is close to P . pungens
rear. Anterior margin of pronotum submarginate Mayr, but the inner margin of mandible has a dis-
Pronotal suture and metanotal groove absent. Prop- tinct tooth, in dorsal view, apices of propodeal
odeal spines long, curved inward at apices and spines are curved inward and hook-like, in profile
hook-like Propodeal lobes elongate and spine-like view, dorsum of alitrunk roundly convex, petiolar
.
about 1/3 times as long as propodeal spine. In pro- node broad and with dorsum relatively straight
file view, petiole with short and stout peduncle an- Acknowledgements We thank Mr. LIU Tai-yong
, . . .
Xu Z.H. and Zhang Z.Y. :New species ofthe ant genus Pristomyrmex 71
Figs.1-12 Pristomyrmex workers
1-4 P. brevispinosus Emery; 5-8 P. pungens Mayr; 9-12 P. hamatus sp. nov. ; 1, 5, 9 Head in full face view;
2,6,10 Mandible in dorsal view; 3, 7, 11 Body in profile view; 4, 8, 12 Thorax, petiole and postpetiole in dorsal view.
and Mr. HE Yun-feng (Students at Department of the Major Foundation of the Chinese Academy of
Forest Protection, Southwest Forestry College Sciences (Project No. Kz951-Al-104)
Kunming), and Mr. YANG Xiao-dong (Kunming
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