A new species of the genus Ballistura (Isotomidae: Collembola) from lake shore of Yasaka Dam, Hiroshima, Japan

2007·0.3 MB·

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Edaphologia,No, 81:9-12,July30,2007 9

A New Speciesof theGenus Batlistur(aIsotomi:dCaolelembola)

from Lake Shore Yasaka Dam, Hiroshima
of ,Japan
Shingo[[bnaka" KeikoNiijima"*
and
"5-9-40Jiiroku-cho, Nishi-ku,thtkuoha,819-O04iJapan

"4-J2-J8ELfiiku, Shrginami-7kbui,g,oJ,68-O064mpan

Received: 4 October 2006; Accepted: l6 March 2007
Abstrac tAbout a thousand individua olfs Collembola were collected with bait traps set at the lak eshore ofYasaka
dam, Hiroshima, Japan. The species resembles Baiiistor rlaamellige r(aBOrne r19,09) in having tenent hair son
tibiotarsus ,but i tis clearly differen tin several featur efsrom other species of the genus .It is described here as a new
specjes, B. yasakaensis Tanaka and Niijima.
Key words: aquatic species, bait trap ,Baliisturayasakaens iCso,llembola, Hiroshima
BOrner(1909) Proisotonea (DallTaorre, Ballistura
made schoetti yasakaensis sp. nov
1895) type of the subgenus Baliistur aand late rStach (1947) [Japanesename:YiLsaku-mizugiwa-tobimusi]
raised its status to genus, which is composed of superficially (Fig 1s).
aquatic species. Many species of the genus were reported
from the Holarcti cregion (Baben k&o Fjellber g2,006; Body color entirely dark violet, almost black t,hough furca
Christians e1n9,58 ;Christians &en Bellinge r1,998; Dunger, paler a,ncl about 2 mm long ,Body densel yclothed with short
1982; Potapov 2,001) ,but only two species have so fa rbeen setae arranged in 7-1O irregul atrransverse rows on tergits
reported from the Oriental region (Uchid a19,49; Yosii, of Abd, I- III ,AIong median line ･on ventral side of the
1966) and one from Hawaii (Christia n&s Beenllinger ,1992). segments, setae absent ir rone third of width. Seta ealmost
Only B. schoetti, a cosmopolitan species, is distribut iend equally long on whole body. All setae smooth, acuminated.
the Neotropica lE,thiopia nA,ntarcti acnd Australi arnegions Skin finel ygranulate dto be seen only under greater
(Greensla1d9e9,4,2006;Heckman, 2001;MariMutt&
enlargement.
Bellinger ,1990; Ybsii ,1959). Antennae longe rthan head (a s10:7) .Relative lengths of
Ybsi i(1977 l)iste fdbur species of Ballistu rfarom Japan, antennal segmentsI:II:IIIiIV as 2:7:6:1O. Ant, III
but one of them, B. Iamelliger a(BOrne r1,909), may be organ consisting of two blun trods and a pair of fin ehairs
doubtfu1 b,ecaus ei twas describe don only one specimen, (Fi g1.-B) .Ant. IV with an apical cone. PAO elliptical ,with
and has never been collected since. Potapov (200 1re)garded a slight constriction in middle, two times longe rthan one eye,
the genus as part of a Proisotoma-complex and gave a Eight eyes on each side of head, two of them being small and
new clefiniti onH.e changed B. stricta (Ybsi i19,39) and B. obscure (Fig 1.-C).
takeshitai (Kinoshi t19a1,6) int oPaclyotonea stricta and R Tibiotars wuisth dista slubsegment, and with 2, 3, 3 tenent
takeshitai ,respectiyely. On the other hancl h,e Ief tB. yosii hair s(Fi g1.-D) .Unguis somewhat stout without inne rand
(Stac 1h9,47) intact, later atlooth .Unguiculu sacute, smaller than half of unguis,
About a thousand individua olfsBallistura sp., in the sense withouttooth
of Potapov (2001 we)re, collected with bai ttrtip sw,hich were Abd. V distinctl yseparated from VI, though the latter
set at the lake shore of Yasaka dam, Hiroshima. The new small and hard]y visible from above (Fig .1-A) .Venrtal
species is similar to B. Iameiliger ab,ut is elearly different tube with 5 - 7 setae latera l(lFyi g1.-E) .Rami oftenaculurn
from other species of the genus and is therefore describ eads a quadridenta tcoer,pus with a seta (Fi g1.-F) .Furcul areaches
new specles. the midclle of Abd. II ,Length ratio of manubrium : dens :
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10 Shing oTanaka and Keiko Niijima
Fig. 1. Batlistur ayasakaensis sp. nov. A, Habitus; B, Ant. III organ; C, PAO and eyes; D, Hind
leg ;E, Ventral tube; F, Tenaculum ;G, Latera lview ofmanuburiurn; H, Dens and mucro from
dorsa lside; I ,Ditto ,from ventral side; J, Mucro.
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A　new 　specjes 　ef　the　genus　Ballistur（alsotomida：eCollembola）from　1ake　shore 　of　Yasaka　dam，　Hiroshim，　aJapan 11
mucro 　as　15 ：16 ：6．　Manubrium 　dorsal　lwyith 　about 　22 〜 B6rner，　C．，1909．　Japans　Collembolen　fauna．　Sitzungsberichten
24pairs　of　setae （Fig．1−G），　and 　ventrally 　without 　seta．　Dens 　　de尸　Gese〃schaft 　NatUff）rsehender 　Freunde，2：99−135，
dorsal　lcyrenulated ，　with　8−10setae（Fig，1−H），　and　ventrally Christianse，　nK．，1958．　The　Collembola　ofLebanQn 　and　Western
with 　3＋l　dista　lsetae （Fig．1−1）．　 Mucro 　slender，　bidentate 　　Syria，　Part　III　Family　lsotomida．e　PSYCHE ＞　6．5：59−79．
d量stally；subapical 　tooth　stout 監arger　than　apical　tooth，　being Christians，　eKn．　and　Bellinge，　rP．，1992．　Insec　tosf　Hawaii．
，
lamellat　eandd 　swelling　basall（yFig．1−H，　J）．　Occasionally， 　　Universit　oyfHawaii 　Press，　Honolulu．
the　lamella　Hkely　to　have　a　small 　tooth（Fig．1−1）、 Christiansen　K．　and 　Bellinger　P．1998．　The　Collembola　of
， ， ，
Holotype：La1（e　shore　ofYasaka 　dam，　Otake　City，　Hiroshima 　　Nordl　America　part　2　Familie　sOnychiurid　aaned 　Isotomida．e
Pref．20−V −2005，　Shingo　Nakamura　leg．　Paratypes：5 　　Grinne重l　College，　Grinne，　lIlowa．
exp ，，　same 　dat　eas　fbr　holotyp．　eHolotype（Type　No．3151 Dunger，　W．　G．，1982．　 Collembole（nlnsecta，　Collembola）aus
Kyushu　Univ．）and　5　paratypes　are　deposit　eidn　Entomological 　　der　Mongolischen〜blksrepubli，　kII．　Isotomidae．　Annales
laborator，y　Faculty　ofAgriculture ，　Kyushu　University． 　　Historic−oNaturale　sMusei　NatiQnali　Hsungarici，74；35−74，
Remarks ：This　species　resembles 　B．　lame〃igera（B6rner， Greenslade，　P．，1994．　 Collembola．　 ln：Zoologica〜Catalogue
1909）by　possessi　ntgenent　hair　son　tibiotarsu　sbut　the　cited 　　ofAblstralia ．　Vol．22．　Protura，　Co〃embola ，　Diplura．（ed．
，
specles 　is　distinguish　ferdom　this　species 　by　the　fbllowing 　　Houston，W．　W ．　K、），　pp19−138，CSIRO ，Australi，a
points；in　the　cited 　species 　PAO　is　subequal 　to　occelli ； Greenslad，　eP，，2006，　The　springtails （Collembola）of　South
tib［otarsus 　with 　2，2，2tenent 　hairs；dens　shorter 　than 　　Africa．　http：〃www ．ru．ac．za！academic 〆departments！zooentot
manubrium ，　with　6　dista　sletae　ventrally． 　　 Martin！collembola ．html
Etymo 鳳ogy ：The　specific　name 　is　derive　dfrom　the　name 　Qf Heckman ，　C．　W ．，200L 　 Encyclopedia　of　South　American
the　type　locali．ty 　　aquatic　insect：sCQIlembol．　aKluwer　Academic　Publishers
，
　　 Dordエecht圧Bosten1Lo（…non．
Acknow 且edgement Kinoshita，　S．，1916，　Three　new 　species 　ofJapanese 　CollemboIa，
　We　appreciate 　Dr．　Shingo　Nakamura （Shobara　city， 　　Zoologicq　lMag αzine ヱbκレo，28（338）：494・498．（in∫apanese）
Hiroshim　aPre£），　who 　kindl　ygave　us　the　specimens ，　which Mari　Mutt，　J，　A．　and　Bellinger，　P．　E ，1990．　A　catalog　of　the
were　collec亡ed　durin　gbiologic　saulrvey 　around 　river　and　lake 　　NeotrQpic　Caolllembol．　aSandhi　lCliane　Press，　Florid，a
shores 　in　Hiroshirn　aand 　it　sneighboring 　prefectures，　 We Potapov，　M ．，2001．　 Synopses　on　palaearctic　Collembola，
thank 　Dr．　Ryosaku　Itoh，　Biologica】Laboratory，　College　of 　　Isotomida．e　Staatlich　eMsuseum 　fUr　NatUrkunde，　G6rlit．z
Arts＆ Sciences，　Showa　University，　who 　provided　us　with 　an Stach，　J．，1947．　 The　ApterygQtan　Fauna　ofPoland 　in　Relation
extensive　literat　uonr　eCollembol．a 　　to　the　World−Fauna　of　this　Group　of　I皿sects ．　Family：
　　Isotomidae ，　Acta　Monographica　Musei　Historia　eNaturalis
，
摘　要 　　 Krak6w，
　田中真悟 （〒 819−0041 福岡県西区拾六町5−9−40），新島 Uchida，　H．，1949．　 Apterygota　aus 　Neu −Guinea．　 fnsecta
溪子 （〒 168−0064　東京都杉並区永福　4−12−18）：広島県弥 　　ルfatsumurana，17：38−47，
栄ダム湖岸で採集したミズギワトビムシ属の一新種 ． Yosii，　R．，！939．　Isetomid　Collembola　of∫apan．　Tenthre，do2：
　広島県大竹市弥栄ダム湖岸に設置したベ イ トトラッ プで約 　　 348−392．
千個体採集され た トビム シは Bailisttt　lraamelligera（BOrner， Ybsii，　R．，1959，　Collembol　afnauna　of　the　Cape　Province，　with
1909）に類似してい た．しかし，触角後器の大きさ，脛付節 　　special 　reference 　to　the　genus∫eira　Lubbock 　Bioiogical
の 粘毛の数，跳躍器の形態などの点で，今までに報告された 　　Resutt　s6ゾthe　Japanese　Antarcti　cReseareh　Expedition（Seto
ミズギワ トビム シ属の どの種とも異なるので，XtP　tBalltstura 　　Marine　Biologica　Llaborator）y，6：1−23．
yasakaensisとして報告し，和名をヤサカミズギワトビムシと Yosii，　R．，1966．　 On　some 　Collembola　ofAfghanistan ，　India
した． 　　and　Ceylon，　collected　by　the　KUPHE −Expedition，1960，
　　Results（）f　the　Kyoto　University＆ゴε鷹卯‘Expedition’o　the
References 　　Karakoram　andffi ’ndukush ，／955，　Vlll：333−405．
Babenko ，　A ，　and　FjeLlber，　gA．，2006．　Collembola　septentrionale ． Yosii　R．1977．　Critica　lcheck 　hst　ofthe 　Japanese　species 　of
， ，
　　Acatalogue　of　springtails 　of　the　Arctic　regions ．　 KMK 　　Collemもola，　 Contribution　fsrom　the　Biologica　Llaborαtory，
　　Scient且ic　Press　Ltd．，MQscow ． 　　K〕ノoto 〔］niversi リノ，25：141−170．
一
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