Table Of ContentVol. 104,No.4, September&October, 1993 161
AMBLYCERUS TEUTONIENSIS
(COLEOPTERA: BRUCHIDAE),
A NEW SPECIES OF SEED BEETLE1' 2
Cibele S. Ribeiro-Costa,2John M. Kingsolver^
ABSTRACT:Amblycerusteutoniensisisdescribed and illustrated.
To provide a specific name to be used in future species group ar-
rangements, this description is presented.
Amblycerus teutoniensis, new species
(figs. 1-8)
m1.m80Dmimmen(smieoanns:=1M.e62dmimu)m;bwoiddythle1n.g96t-h2.m56.3m14mmmm;(mweiadnth=23..4364mmmm)..PErloytnroatluemngltehng2.t4h8-14..328-0
(mean =3.52 mm); width 2.84-3.80 (mean =3.36mm).
Integument: Blackexcept fourbasal antennalsegments,tarsi andcalcaria reddish;
entire pygidium and abdomen reddish yellow.
Vestiture: Head,pronotum,elytra,venterofthoraxandappendageswithbrownand
bluishgrayhairsinirregularmottledpattern(fig.1).Pronotumsometimeswithfoursmall
rounded bluish gray spots (fig.2). Scutellum densely pubescent with light yellow hairs
(fig.4).Pygidium(fig.5)andabdomencoveredwithlightyellowandgoldenyellowhairsin
a mottled pattern and with somescattered small brown patches.
Body: Subquadrate (fig.l). Vertex micropunctate; frons and clypeus more coarsely
punctatethan vertexexceptgranulose in narrowapical band; labrum punctatebasally.
Fronsgently flattened, frontal carina evanescent in lower half, sometimes absent; fron-
toclypealsutureindistinct.Mesalmarginofeyewithfinecarinaandumbilicatepunctures;
eyefinelyfaceted,moderatelyprotrudinglaterally;ocularsinus(emargination) 1/3length
ofeyeandocularindex(widthacrosseyes/widthbetweeneyes)2.8:1;postocularlobelong.
Antennasubserrate from fifth totenth segments,eighth totenth segments slightlywider
than long; terminal segment subelliptical (fig.6). Pronotum (fig.2) subconical. lateral
marginsgentlyarcuate;diskevenlyconvex;basallobebroadlyangulate,usuallynotsul-
cate; surface densely punctulate, lateral one-third ofdisk on either side also coarsely
punctate,middlealsowithsomepuncturessmallerthanthoseonlateralareas;basaland
apical marginswithoutsulci;lateralcarina(fig.3)divided nearbaseandgentlydivergent
towardapex,delimitedbyfineshallowdorsalandfinedeepventralsulci;cervicalbosswith
twofinesetae(fig.3),posteriorangleofpronotumwithoneseta. Prosternum moderately
narrowwithsulcatelateralmarginsandslightlyexpandedbeyondprocoxae.Scutellum 1.3
1 Received October 16, 1992. AcceptedApril 22, 1993
-Contribution no.738 from Departamentode Zoologia ofthe Universidade Federal do
Parana,C.P.: 19030;CEP:81531-970,Curitiba, Parana, Brasil.
3 Florida State Collections ofArthropods, Division ofPlant Industry, PO Box 147100.
Gainesville. Florida 32614-7UK),U.S.A.
ENT. NFWS 104(4): 160-164. September&October. 1993
ENTOMOLOGICALNEWS
162
timesaslongaswide,apextrilobed(fig.4). Elytra as longaswide,evenlyconvexexcept
slightlydepressedaroundscutellum;surural,third,fifth,seventhandninthintervalsgently
elevatedonmiddleapicalportion;striaestronglyimpressed,strialpuncturesfine;elytral
apices rounded. Mesosternum elevated, rounded apically. Postmesocoxal sulci meeting
mesallyatacuteangle,thenextendinglaterallyandconnectingtoparasuturalsulci,thelat-
terextendingbeyondmiddlelengthofmetasternum.Metepisternumpunctulate,alsowith
manycoarserpunctures,lackingstriatefile;metepisternalsulcusnearlyrightangled,verti-
cal arm reaching apex and longitudinal arm very short, not reaching middle length of
metepisternum.Metasternumbetweenmiddlecoxaenotbulging.Faceofhindcoxaindis-
taltwo-thirdsandalongposteriorborderofproximalone-thirdsetoseanddenselypunctu-
late;manyscatteredlargerpuncturesondistaltwo-thirds;proximalone-thirdglabrousin
partandpunctateexceptinareducedarea.Metafemurslender,2.9timesaslongaswide
(fig.7);ventralfaceslightlysulcateindistalthree-fourths;mesoventralcarinacompletebut
lackingblunt,angulateprocessnearapex.Ventralfaceofhindtibiaslightlyconcave,each
marginwithrowofpunctures andshort,stiffsetae;mesal facelackingtumidityatdistal
two-thirds;apexwithafew,shortcoronaldenticles.Mesaltibialspurone-fifthaslongas
lateralspurandone-thirdaslongasfirstmetatarsalsegment(fig.7).Pygidium(fig.5)verti-
cal,subtruncateapically;surfacepunctulateandwithmanycoarserpunctures. Fifthvis-
ibleabdominalsternumslightlyemarginateinmaleandroundedinfemale.Eighthtergite
rounded in male.
Male terminalia (figs.8,9): Median lobe with ventral valve acute apically, lateral
marginsincurvate,basebroad;dorsalvalvesubtriangular,lateralmarginsnearlystraight,
apexrounded. Internal sac armature(fig.8)consistingoftwobasal subconcave,slipper-
shaped sclerites with shortirregularprotuberances nearapex(figs.8D,8d); twosubbasal
sclerites, fourtimes as long as wide, subrectangular, slightly sinuate and with serration
directedapicadalongamargin(fig.Sb)neartheplaceofprecedentpairandinpartoverlap-
pingit,twosubbasalsclerites,2.1 timesaslongaswideatbase,subtriangular,verysinuate
and armed with denticles directed basad (fig.8e); two long, laminar, median sclerites,
slightlyangulatetowardbasalandmedianportions,withoneortworowsofbasallydirected
denticlesalongmiddleapicalportion;unpaired,medianwishbone-shapedsclerite,shorter
thanthelaminars(1.3 as longasthelength oflaminars),with strongly incurvate lateral
margins on middle apical portion, rounded apex in lateral view (fig.SC) and distinctly
separatestems;apicalscleritewithbroadlateralareasandlongstems(fig.8).Internalsac
membranewithspinesonbasalandmedianportions(figs.8A.8F).Laterallobeswithmod-
eratelydeeproundedcleftbetween them (fig.9).
Etymology:Thespeciesnamereferstotheplacewheretheholotypewas
collected: Nova Teutonia, Santa Catarina, Brazil.
Type Material: Holotype, male: BRAZIL: Sta.Catarina, Nova Teutonia; 14.11.1944; F.
Plaumann;depositedintheNationalMuseumofNaturalHistory,Washington(NMNH).
Allotype,BRAZIL:SaoPaulo,IlhadaVitoria, 16-27.111.1964,Exp.Dep.Zool,depositedin
the Museu de Zoologia de Sao Paulo (MZSP); one male paratype withsame label as
holotype, deposited in the Museu de Entomologia do Departamento de Zoologia da
Universidade FederaldoParana (DZUP); additionalthreeparatypes. BRAZIL: Mato
Grosso,ChapadadosGuimaraes,April,Acc.No.2966,depositedintheCarnegieMuseum
of Natural History, Pittsburg (CARN); Rio Grande do Sul, Sao Leopoldo, 15.X.1982,
CJ.Becker, 60.602, deposited in the Fundacao Zoobotanica do Rio Grande do Sul
(FZB.MCN); PARAGUAY: Sao Bernardino, 27.XII, Amaranthaceae, K. Fiebrig
(NMNH);Depto.AltoParana,CentraFor.AltoParana,25 30'S,54,44'W, 14-16-V-1986.
Pogue&Solis(NMNH).
Vol. 104,No.4,September&October. 1993 163
BLACKINTEGUMENT
BROWNHAIRS
BLACKINTEGUMENT
BLUISHGRAYHAIRS
BLACKINTEGUMENT
LKSHTYELLOWHAIRS
REDDISHYELLOWINTEGUMENT
LIGHT YELLOWHAIRS
REDDISHYELLOWINTEGUMENT
GOLDEN YELLOWHAIRS
Figs.l-9.Amblycemsteutoniensis, newspecies. 1.dorsalhahitus;2.pronotum;3.lateralview
ofpronotum;4.scutellum;5,pygidium;6,antenna;7,hindtrochanter.femur,tibiaandfirst
metatarsalsegment;8.malegenitalia.medianlobe:A-spinesonbasalportionenlarged,b-
subbasal serrate sclerites,c- lateral viewofwishbone-shaped sclerite, d-ventral viewof
basalsclerite.D-sameenlarged,e-subbasalspinoussclerites,F-spinesonmedianportion,
enlarged;9. legmen.
ENTOMOLOGICALNEWS
164
DISCUSSION
This species is most closely related toA. canescens (Boheman). Both
share many characters such as body, except pygidium and abdomen,
mottled with brown and bluish gray hairs, postocular lobe long, eyes
finely faceted, lateral carina ofpronotum divided, scutellum trilobed,
longitudinalarmofmetepisternal sulcusveryshort,metepisternumand
hindcoxaevenlypunctured,mesal mesotibialspuraboutmiddlelength
oflateral spur and one-third length ofthe first hind tarsal segment.
Amblycerusteutoniensiscanbedistinguished from,4. canescensbythe
reddish yellow integument of the first four antennal segments, tarsi,
pygidium and abdomen; these parts are entirely black inA. canescens.
Thecharactersintheinternalsacofmalegenitaliaarecomparablein
thesetwospecies.Differencesarefoundintheshapeofbothpairsofsub-
basal sclerites (short in teutoniensis, longer in canescens; the other sub-
triangular with denticles directed basad in teutoniensis (fig.Se), sub-
rectangularwith denticles directed apicad in canescens; in the shape of
the long laminar sclerites (slightly angulate in teutoniensis, strongly
angulate in canescens; and in the wishbone-shaped sclerite (with incur-
vate lateral margins and distinctly separate stems in teutoniensis, nearly
straight and moderately separate stems in canescens).
ACKNOWLEDGMENTS
Wewould liketothank RenatoC. Marinoni forcommentson this paper.
LITERATURECITED
Boheman, C.H. 1833. In Schoenherr, C.J. Genera et species curculionidum cum syn-
onymiahujusfamiliae:speciesnovaeauthactenusminuscognitae,descriptionibusa
Dom. LeonardoGyllenhal.C.H. Boheman.etentomologisaliis.Vol.1(1):1-385. Paris.
