A New Minypatrobus (Coleoptera, Carabidae) from Central Hokkaido, North Japan

4 Pages·2002·3.7 MB·English

by  Morita, S

Elyt,-a,Tolkvo,30(2):290-293,November22,2002
ANewMinypatrobus(Coleoptera,Carabidae)
fromCentralHokkaido,NorthJapan
SeijiMORITA
Higashi-gotanda5-19-7,Shinagawa-ku,Tokyo,141-0022Japan
Abstract A newpatrobinecarabidbeetleisdescribed fromMt.Ashibetsu-dake,
centralHokkaido,NorthJapan,underthenameofMinypatt・obuskasaharat. Itismainly
characterizedbythechaetotaxyoftheanalsterniteinthemaleandtheshapeofapicallobe
oftheaedeagus.
Whilesortingthroughanassemblageofidentifiedpatrobinecarabidsinthecol-
lectionof theNational ScienceMuseum(Nat.Hist), Tokyo, I cameacrossseveral
specimensofanewspecies fromCentralHokkaido,NorthJapan.Judging fromthe
basicsimilarityofmalegenitalorgan,thisnewspeciesisdoubtlessclosesttoMlnypa-
trobushidakanus(ZAMoTAJLovetMORITA,2001,p 228).
ThelateMr.Sumao KAsAHARA,whohadstudiedcarabidbeetlesmainly from
Japanasanamateurentomologist,passedawaylastyear.Iwasdeeplygrievedonhear-
ingofhisdeath.Inthispaper, Iwouldliketodedicatethespecificnamekasaharaito
thememoryofthelateMr.KASAHARA.
Theabbreviationsusedhereinarethesameasthoseexplainedinmypreviouspa-
pers.
Beforegoingfurther,IwishtoexpressmydeepgratitudetoDr.Shun-IchiUENo
for loanoftheimportantmaterialand forcriticallyreading theoriginalmanuscriptof
thispaper.MythanksarealsoduetoMessrs.KaoruHAGAandHideaki MATSUMOTO
forsupplyingmewithmaterial.MythanksarealsoduetoMr.ShigehisaHoRl forhis
kindhelp.
MinypatrobuskasaharaiMORITA,spnov.
[Japanesename:Ashibetsu-nurechi-gomimushi]
(Figs.1-5)
Diagnosis. Body large;eyesweaklyconvex; in ,analsternitewithapairof
setae;apicalpartofaedeagusnarrowinlateralview.
Descnption. L: 5.1-6.0mm. Body robust; colour as in M hidakanus. Head
largeandtransverse;PW/HW125-1.33(MI.29)in4 4 ; frontal furrowsdeep,
,
divergent posteriad and reaching thelevel of the anterior supraorbital pores; lateral
NewMin、pa1t-ob11sfromNorthJapan 291
groovesdeep,becomingwiderposteriadandarcuateinwardsat theposteriorends;
eyesweaklyconvex;genaestronglyconvexandalittleshorterthaneyesoneachside
(measuredalongthemidline); anteriorsupraorbitalporessituatedatmid-eyelevel;
posteriorsupraorbitalporessituatedalittlebeforetheneckconstriction;microsculp-
tureconsistingof isodiametricmeshes;apex of labrumdeeply emarginate; relative
lengths of antennal segmentsas follows:- I:II:III:IV:V:VI:XI=1:0.62:1.33:
0.91:0.94:0.95:1.32.
Pronotumtransverseandconvex;PW/PL132-1.46(M I36),PW/PA t32-1.35
(M I34),PW/PB125-1.36(M I31),PA/PB0.94-1.01(M0.98) in4 and 4 ;
apexwidelyandmoderatelyemarginateandnotborderedthroughout;apicalangles
moderatelyproducedandroundedatthetips;sidesmoderatelyarcuateinfrontandsin-
,
・
書
t
一
Fig. 1. Mi,1ypat1・obuskasaha1・alMORITA,sp nov., , fromMt. AshibetSu-dake
292 SeiJiMORITA
Figs. 2-5. Minypat''obuskasaha,al MORITA,sp nov., fromMt.Ashibetsu-dake. - 2,Aedeagus, fofl
lateralview;3,apicalpartofaedeagus,dorsalview;4,rightstyle,leftlateralview;5,leftstyle,right
lateral view.Scale:0.5mm.
uatebeforehindangles; reexedlatera1bordersverynarrow;hindanglesrectangular;
basal foveaerathershallowandusuallywithseveralcoarsepunctures,rarelysmooth;
median lineclearlyimpressed,notreachingapex,deepandwideat thebasal t/5of
pronotum,andnearlyreachingbase;microsculptureconsistingofwidetoisodiametric
meshesonthedisc,andoffinetransverseonesonthebasalpart.
Elytraelongate;shouldersdentate;sidesweaklyarcuatethroughoutandwithvery
shallowsinuation;intervalIIIwiththreedorsalporesusuallyadjoiningstria3orsome_
timesclosetostria3,anteriorporesituatedatbasal t/5-1/4,middleoneataboutmid_
die,posterioroneatbasal7/10-4/5,respectively;EW/PW1.36-1.39(MI38),EL/Ew
1.56-1.68(M I62),EB/EW0.58-0.62(M0.61)in4 4 ;scutellarstrioIeobso_
,
feteorveryshortandsituatedonintervalI;basalporessituatedoninterval IIorbase
ofstria1oneachside;intervalsweaklyconvex;marginalseriescomposedofnineto
tenpores;microsculptureconsistingofwidemeshes.
Gulawithwrinklesandcoarsepuncturesatthesides;prosternum,prepisternum,
mesosternum,mesepisternum,andsidesofmetasternumwithcoarsepunctures.
Analsternitewithapairofsetaein ; in ,analsternitewithtwopairofsetae
whicharealmostalinedoronaveryshallowarcopenanteriorly;TL/HW0.74-0.78
NewMinypa1t・obusfromNorthJapan 293
(M0.76)in1 ,3 ;MTL/FL0.39-0.43(M0.41)in3 4
, .
Aedeagusslender,stronglybentatbasalpart,moderatelyarcuateinlateralview;
apical lobeverynarrowandweaklyarcuatein lateral view;vieweddorsally,apical
lobeslightly inclinedandtwistedtotheright,wideandgraduallynarrowed towards
simplyroundedapex.Le stylelargerthantherightone,eachwithasingleseta.
Variationofanalstermte. Thenumber ofsetaeinthemale isstable. In one fe-
male,theinnersetaislackingontherightside.
「 e serzes. Holotype: , allotype: , 24-VII-l964,S. UENo leg. (NSMT).
Paratypes: 2 , 24-VII-1964,S. UENo leg. (NSMT);2 , 27-VII-1996, K. HAGA
leg; le,19,7-VII-2001,H.MATSUMOTOleg.
Typelocality. Mt.Ashibetsu-dake,about 1,300-1,550malt.,Hokkaido,North
Japan.
Notes. ThisnewspeciesiscloselyalliedtoM hidakanus.It is,however,distin-
guished fromitbythefollowingpoints:1)body larger;2)eyesmoreconvex;3)sides
ofpronotummorestronglyarcuateinapicalhalves;4)basal foveaeofpronotumwith
severalcoarsepuncturesoralmostsmooth;5) elytra1striaeweaklypunctate;6)anal
stemitewithapairofsetaeinthemale;and7)apicalpartofaedeagusnarrowerinlat-
eralviewand wider indorsalview.
要 約
森田誠司:北海道産のヌレチゴミムシのl新種. - 北海道芦別岳で採集されたヌレチゴミ
ムシの1新種, Mlnypatrobuskasahara,を記載した. この種は, 体形, 交尾器などからみて, 日
高山地から記載されたヒダカヌレチゴミムシMinypatrobushidakanusZAMoTAJLovetMORITAに近
縁であるが, おもに, 陰茎先端部の形, 雄の腹端節に1対の剛毛があること, などの点で識別
される.
なお, 種小名のkasahara1は, 本学会ならびにゴミムシ類分類の発展に尽くされた笠原須磨生
氏に捧げたものである. また同氏は採集記などを通して, ゴミムシ類への関心を高め, アマチ
ュア研究家の増加をもたらし, その結果として知見が近年急速に増加したことを付け加え, ご
冥福を祈るものである.
References
HABU, A., 1972. OnsomeCarabidaefoundbyDr.S.-I.UENo in Hokkaido,North Japan(Coleoptera,
Carabidae). Mushi,Fukuoka,46:29-38.
UtNo,S.-I.,1955. Mi,lypatrobusdarlingtoni(newgenusandnewspecies),anotableadditiontothecara-
bid-faunaofJapan. Mom.Coll.Sci.Un、i.lKyoto,(B),22:51-56.
ZAMoTAJLov,A.S., l992. NotesonclassificationofthesubfamilyPatrobinae(Coleoptera,Carabidae)of
thePalaearcticRegionwithdescriptionofnewtaxa. M加.schweizent.Ges.,65:251-281.
- & S.MORITA,2001. Anewspeciesof thegenusMlnypatrobus(Coleoptera,Carabidae)from
NorthJapan. Elytra,nokyo,29:227-231.