Amauromelpia, A New Northern Neotropical Genus (Heteroptera, Pentatomidae)

8 Pages·1998·3 MB·English

by  José Antonio Marin Fernandes

AMAUROMELPIA,A NEW NORTHERN NEOTROPICAL GENUS
(HETEROPTERA, PENTATOMIDAE)
JoséAntonio Marin Fernandes^'^
Jocélia Grazia^'^
ABSTRACT
AnewneotropicalgtnusAmauwmelpiaisproposedtoincludeA.ussusp.n.,typespecies,fromCosta
Rica,FrenchGuyana,BrazilandBoliviaandA.mirisp.n.fromColômbiaandPeru.
KEYWORDS.Pentatomidae,Pentatomini,Amauwmelpia,Taxonomy,Neotropical.
INTRODUCTION
IntherevisionofHypatropisBergroth, 1891, Fernades & Grazia (1996) hadthe
opportunityto examinealarge series ofspecimens with similarfacies.The study ofthe
male and female genitália, allied to other morphological characters, allowed us to
separate these specimens in three distinct groups. One of them is here described as a
newgQnusAmauromelpiawithtwonewspeciesA. ussuandA.miri. SuchslsHypatropis,
thenewgenusbelongstosection1 ofRolston&McDonald(1984),wichischaracterized
by the absence ofa tubercle on third urostemite.
MATERIALANDMETHODS
Thespecimensstudiedbelongtothefollowingcollections:AmericanMuseumofNaturalHistory,New
York, NewYork, USA (AMNH); Coleção de Entomologia Pe. J. S. Moure, Departamento de Zoologia,
UniversidadeFederaldoParaná,Curitiba,Paraná,Brazil(DZUP); ColeçãoEntomológica,Departamentode
Zoologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (UFRG);
ColeçãoEntomológica,FundaçãoInstitutoOswaldoCruz,RiodeJaneiro,RiodeJaneiro,Brazil(FIOC);Coleção
Entomológica, Fundação Universidade do Amazonas, Manaus,Amazonas, Brazil (FUAM); Entomological
Collection,DepartmentofEntomology,U. S. NationalMuseumofNaturalHistory,Washington,Districtof
Columbia,USA(USNJV4); InstitutoNacionaldePesquisadaAmazónia,Manaus,Amazonas,Brazil(ENPA);
MuseoRegionalediScienzeNaturalidiTorino,CollezioneMassimilianoSpínola,Torino,Italy(MRSN);Museu
Nacional,UniversidadeFederaldoRiodeJaneiro,RiodeJaneiro,RiodeJaneiro,Brazil(QBUM);Museude
Zoologia,Universidadede SãoPaulo, SãoPaulo, SãoPaulo,Brazil(MZSP); TheNaturalHistoryMuseum,
1.DepartamentodeZoologia,UniversidadeFederaldoRioGrandedoSul.Av.PauloGamas/n° CEP90046-900.PortoAlegre.RS.Brasil.
2.Bolsistadedoutorado,FAPESP,[email protected]
3.BolsistaCNPq,[email protected]
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54 Fernandes&Grazia
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London,England(BMNH);ZoologicalCollection,LundUniversity,Lund,Sweden(LUND).
Measurementsaregiveninmillimeters.ForthenewspeciesA.ussuandy4.mirialimalesandfemales
were measured. The terminologyofDupuis (1970) was adopted forthe structure ofthe genitália. The only
femaleofA.niiriwasnotdissected,thendescriptionandillustrationsofinternalgenitáliawerenotdone.
Amauromelpia gen. n.
Etimology. Greek, amauro =dark, melpia =proper name; gender neuter.
Type species. Amauromelpia ussu, sp. n.
Castaneous to dark castaneous. Elliptical-shaped body. Body length 6,5-9,6.
Abdominal width 3,7-5,6.
Headwiderthanlong.Jugaeandtylus subequalinlength.Antennaewithsegment
Inotattaining apexofhead.Antennal SegmentsIandIIsubequalinlength,III subequal
toV bothlongerthanIV; segmentIV slightlydorsoventrally depressedandverygently,
longitudinally sulcated. Headinprofilewithjugaeinahigherlevelthantylus. Bucculae
with a small anterior tooth, rectilinear in profile, weakly developed and evanescent at
base ofhead. Rostrum attaining or slightly surpassing metastemum. Rostral segment I
as long asbucculae and obscuredby theminprofile. Rostral segmentII shorterthanIII
andIVtogether.Ventral surfacewithpunctures almostregularlydistributed, sometimes
concentrated at base ofbucculae.
Pronotum trapezoidal, anterior two thirds slightly declivant. Anterior angles
distinctly toothed. Humeral angles slightly toothed. Pronotum densely and uniformly
punctured; scarespunctured.Anarrowrowofwhitehairsalongprostemum,mesostemum
and metasternum. Anterior half of mesosternum with a low carina. Metasternum
shallowly concave. Each ostiolarrugae clavate and developed through 1/6 metapleural
width. Evaporatory areamatte and punctured. Basal angles ofscutelum foveated, apex
rounded attaining posterior border of connexival segment V. Scutelum densely and
uniformly punctured. Posterior angle of corium acute reaching middle connexival
segment VI. Apex of radial vein with a small pale yellow callus. Corium with an
impunctured narrow strip parallel to clavus. Exocorium densely and fmely punctured.
Hemelytralmembranehyalineandinfuscate,veinsbrownsometimesbifurcate. Femora
and tibiae with piceous dots. Tarsi immaculate. Tibiae dorsally sulcated.
Well-exposedconnexivumwithconcolorouspunctures sometimesbordereddark-
castaneously. Postero-lateral angles of connexivum weakly projected. Ventral surface
of abdómen dark spotted along median third; lateral margin finely, lighter and less
punctured. Eachtrichobothrium separatedbytheimaginarylongitudinallinetangential
to spiracles. Subcaloused, pale-yellow little spots, inner to spiracles, not punctured.
Malepygophorequadrangular,globoseopeningdorso-posteriorly.Postero-lateral
angles rounded slightly projected. Dorsal rim (dr) posteriorly projected covering
pygophoral cup at base; middle third shallowly concave. Ventral rim (vr) forming two
layers; the superior one expanded in l-i-l cylindrical arms (ca) dorsally-directed, each
one beside segment X, inner angle projected toward longitudinal plane. Inferior layer
carinated, median third with 1+1 tooth-like projections (tp). Segment X (x) cylindric,
with 1+1 processes (pp) near middle length, surface of posterior half concave, apex
rounded. Parameres absent. Phallus ovoid. Articulatory apparatus: dorsal connectives
(de) broad and short; processus capitati (pca) well-developed. Phallotheca (ph) with
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Amauromelpia,anewnorthernneotropicalgenus... I55
one median and ventral process, processus phallothecae (pph), in 1+1 clavate arms,
subparallel,laterally-depressed,dorsally-curved, ápices slightlytwisted. Postero-lateral
angles of phallotheca developed. Conjunctiva (cj) complex with slightly sclerotized,
tumid areas and two processes: one ventral, processus conjunctivae 1 (prcjl), in 1+1
divergent, strongly sclerotizedcylindrical arms, with apex dorsally-curved, longerthan
Processus phallothecae; the other lateral, processus conjunctivae 2 (prcj2), in 1+1
almost rectangular structures, depressed, with a well-developed spine-like projection
dorsally directed. Vesica (v) with a dorsal shield-like processus, processus vesicae
(prv); membranous side in a ventral shapeless collar. Ductus seminis distalis (dsd)
extremely long, helicoidal and very delicate usually not preserved after dissection.
Female. Outhneofgenitalplatesinasemicircle. Gonocoxites 8 (gc8)withmesial
borders parallel. Spiracles absent in laterotergites 8 (la8). Gonocoxites 9 (gc9)
trapezoidal.Laterotergites9(la9)convergent,internalmarginstraightabovegonocoxites
9, surfaceofbasalthirdexcavated,ápicesrounded.Antero-lateralanglesofgonocoxites
8 with 1+1 divergent arms. Secondary thickening (st) of gonapophyses 9 (g9) and
Chitinellipsen (ch) present. Thickening of vaginal intima (tvi) conical. Capsula
seminalis (es) globose, tooth-like processes absent.
Distribution. CostaRica: Taboga; French Guyana; Brazil:Amazonas, Pará; Peru:
Loreto; Bolivia: Beni.
Diagnoses. Bodydark. Dorsalrimprojectedposteriorlycoveringpygophoral cup
atbase. Parameres absent. Cylindricalarms ofsuperiorlayerwithinnerangleprojected
toward longitudinal plane. Phallus ovoid. Processus conjunctivae 1 in 1+1 strongly
sclerotized arms with apex dorsally-curved. Processus conjunctivae 2 in 1+1 almost
rectangularstructure,depressed,withawell-developedspine-likeprojectionposteriorly
directed. Surface oflaterotergites 9 with basal third excavated.
Comments.ThisgenusisrelatedtoHypatropis;theysharethefoUowingcharacters:
head in profile with jugae in a higher level than tylus, parameres absent, ductus
receptaculiextremelylong,andwell-developedsecondarythickeningsofgonapophyses
9. Amauromelpia could be distinguished from Hypatropis by the structure ofthe male
genitália, specially the conjunctivalprocesses ofthe phallus; segmentX with an entire
transversal carena in Hypatropis, instead of 1 + 1 processes at middle third in
Amauromelpia.
Amauromelpia ussu sp.n.
(Figs. 1-5, 10-12, 16, 18, 19)
Etymology. From tupy language; ussu = big.
Holotypemale.BRAZIL.Amazonas:Janauacá,29.VH.1978,W.Bensoncol.(DZUP).Paratypes.COSTA
RICA.Guanacaste:LasCanas,Taboga,lOmt,19,20.III.1965(AMNH).FRENCHGUYANA.Cayenne,1850,
D.Jekelcol.,Spinola'scoUection(MRSN).BRAZIL.Amazonas:samedataasholotype, 1õ(MZSP), \õ,29
(UFRG);IgarapéBelém,nearRioSolimoesabout70kmHastofLeticia(Colômbia), Id,V.1970,B. Malkin
col.(AMNH);MédioPunis, 19, 17.X.1979,J.Campbellcol.(INPA);Manaus,Puraquequara, 19,6-9.VIII.1991,
CS.Motta,FA.Peralta&B.R.Telescol.(FUAM);BenjaminConstant,19,XI.1962,A.Silvacol.(MZSP);Parintins,
39,VIII.1935,G.VVrebemburgcol. (BMNH); Pará: RioParu, 19,VII.1952,J.C.M. Carvalhocol. (QBUM),
Prainha, \õ,6.1.1920,D.Mendescol.(UFRG), \õ,samedata(USNM), 19,samedata(LUND);Santarém, 19,
Vm.1936,Worontzowcol.(FIOC),Gurupaiti,19,16-17.IX.1930,Holt,Blake&Agostinicol.(USNM).BOLÍVIA.
Beni:ItenezriveratmouthofBauresriver, 19,IX-X.1964,J.K.Bouseman&J.Lussenhopcol.(AMNH).
Bodylength7.6-9.6.Abdominalwidth4.6-5.6 (fig. 1). Headlength 1.5-2.0. Head
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156 Fernandes&Grazia
Fig. 1.Habitus.Amauromelpiaussusp.n.
width 1.9-2.1. Pronotallength 1.9-2.3. Pronotal width4.5-5.3. Scutellal length 2.9-3.5.
Scutellalwidth2.9-3.4.Tylusslightlylongerthanjugae(intwospecimensofthesample
tylus little shorter than jugae). Outer lateral margin ofjugae anteriorly convergent.
Punctures ofhead regularly distributed except for the tylus that is almost impunctate.
Antero-lateral margins of pronotum almost rectilinear. Its anterior half slightly
crenulated. Corium densely, uniformly punctured.
Pygophore. Diaphragma ateach side ofsegmentX with an excavation delimited
by a dark-castaneous carena (figs. 2-5). Processus capitati reduced in relation to A.
miri, withdiameteralmosthalftheaedeaguslength.Processusconjunctivae 1 straight
and stouter than inA. miri (figs. 10-12).
Gonocoxites 8 uniformly tumid; posterior border convex. Posterior border of
laterotergites 8 just surpassing ápices of laterotergites 9 inner postero-lateral angle
obtuse.Ápices oflaterotergites 9notsurpassingtransversebandunitinglaterotergites 8
dorsally (fig. 16). Gonocoxites 9 with turgid lateral áreas; arms reach base of
laterotergites 9. Secondary thickening of gonapophyses 9 large, partially hiding
chitinellipsen(fig. 18).Ductusreceptaculi(dr)extremelylong(fig. 19),woundbefore
and after vesicular área (va). Annular crests (aac, pac) little developed. Pars
intermedíalis (pi) with a narrow sclerotized ring at base. Capsula semínalís globose,
shorter than pars intermedíalis.
Distribution. Costa Rica: Guanacaste; French Guyana; Brazil: Amazonas, Pará;
Bolívia: Beni.
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Amauromelpia,anewnorthernneotropicalgenus. 157
Figs. 2-9.Pygophores.Amauromelpiaussusp.n.:2-5,dorsal,ventral,posteriorandlateralviewrespectively.
Amauromelpiamirisp.n.:6-9,dorsal,ventral,posteriorandlateralviewrespectively(ca,cylindricalarmsof
inferiorlayerofventralrim;dr,dorsalrim;pp,processofproctiger;tp,tooth-likeprojectionsofinferiorlayer
ofventralrim;vr,ventralrim;x,tenthabdominalsegment).
Amauromelpia miri sp.n.
(Figs.6-9, 13-15, 17)
Etymology. From tupy language; miri = small.
Holotypemale.PERU.Loreto:Iquitos,Iquitosville,chacraMarioEduardoVargas,X.1968,G.Couturier
col.,plantböteCruciferaceae?Sinapris(AMNH).Paratypes:COLÔMBIA.Amazonas:Leticia, Icf,2-7-IV-
1975,D.Englemancol.(AMNH).PERU.Loreto:Iquitos, \õ,9.II.1984,L.Huggertcol. (LUND), Ic^,same
data(UFRG);JenaroHerrera,4°55'S73°40'W,C.I.J.H.culturesexperimentales, \õ, 1989,G.Couturiercol.,
plantböteOrizasativa(AMNH), 19,samedata(UFRG).
Body length 6.7-8.0. Abdominal width 3.7-4.3. Head length 1.5-1.6. Head width
1.6-1.7. Pronotal length 1.5-1.8. Pronotal width 3.6-4.2. Scutellal length 2.5-2.8.
Scutellal width 2.3-2.6. Smaller than A. ussu. Tylus almost as long as jugae. Head
punctures regularly distributed. Antero-lateral margin ofpronotum shallowly concave.
Its anterior halfserrulated. Endocorium less punctured than exocorium.
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158 Fernandes&Grazia
Tjii\\^^^i)d
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pfcj2
Figs. 10-15.Phallus.Amauromelpiaussusp.n.:10-12,dorsal,ventralandlateralviewrts^cúvtly.Amauwmelpia
mirisp.n.: 13-15,dorsal,ventralandlateralviewrespectively (bp,basalplatesofarticulatoryapparatus;cj,
conjunctiva;de,dorsalconnectives;dsd,ductusseminisdistalis;me,membranblase;pca,processuscapitati;
ph, phallotheca; prcjl, processus conjunctivae 1; prcj2, processus conjuntivae 2; prph, processus
phallothecae;prv,processusvesicae;v,vesica).
Iheringia,Sér.ZooL,PortoAlegre, (84): 153-160,20maio 1998
Amauromelpia,anewnorthernneotropicalgenus. 159
Figs. 16-18.Gonocoxites,laterotergitesandgonapophysesofninthsegment,andectodermicalgenitalducts.
Amauromelpiaussusp.n.: 16,\%.Amauromelpiamirisp.n.: 17(aac,anteriorannularcrest;ch,chitinellipsen;
CS,capsulaseminalis;dur,ductusreceptaculi;g9,gonapophysesofninthsegment;gc8,gonocoxitesofeighth
segment;gc9,gonocoxitesofninthsegment;laS,laterotergitesofeighthsegment;la9,laterotergitesofninth
segment;pac,posteriorannularcrest;pco,parscommunis; pi,parsintermedialis; sp,spiraclesofseventh
segment;st,secondarythickeningsofgonapophyses9;tvi,thickeningofvaginalintima;va,vesiculararea;x,
tenthabdominalsegment).
Pygophore: diaphragma at each side of segment X inconspicuously excavated,
carena absent (figs. 6-9). Processus capitati well developed, diameter subequal to
aedeagus length. Processus conjunctivae 1 sinuous (figs. 13-15).
Gonocoxites 8 with inner half tumid and posterior border slightly convex.
Gonocoxites 9 flat. Ápices of laterotergites 9 surpassing transverse band uniting
laterotergites 8 dorsally (fig. 17).
Distribution. Colômbia: Amazonas; Peru: Loreto.
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60 Fernandes&Grazia
1
Fig. 19. Amauromelpia ussu sp. n. Gonocoxites, laterotergites and gonapophyses ofninth segment, and
ectodermicalgenitalducts(dur,ductusreceptaculi;va,vesicularárea).
Comments. Besides the smaller size,A. miri could be distinguishedfromA. ussu
bythe serrulated and shallowlyconcave antero-lateralmargins ofpronotum; processus
conjuntivae 1 slender, sinuous. In A. ussu the antero-lateral margins ofpronotum are
almost straight, slightly crenulated at anterior half; processus conjuntivae 1 stout,
rectilinear in ventral view.
Acknowledgments.Tothecuratorsofthecollectionswhosentspecimensforstudy,andtoCristianoF.
SchwertnerforthedrawingofA.ussu.
REFERENCES
Dupuis,C. 1970.Heteroptera.In:Tuxen,S.L.ed.Taxonomist'sGlossaryofGenitáliaofInsects.Copenhagen,
Munksgaard,p. 190-208.
Fernandes, J.A.M. & Grazia, J. 1996. Revisão do género Hypatropis Bergroth, 1891 (Heteroptera,
Pentatomidae).Revtabras.Ent.,SãoPaulo,40(3/4):341-352.
RoLSTON,L.H. & McDonald,F.J.D. 1984.Aconspectus ofPentatomini oftheWesternHemisphere. Part3.
(Hemiptera:Pentatomidae).JlN.Y.ent.Soe,NewYork,92(1):69-86.
Recebidoem07.01.1998;aceitoem06.03.1<
Iheringia,Sér.Zool.,PortoAlegre, (84): 153-160,20maio 1998