Cyanallagma angelae spec. nov. and a key to the non-Andean species of Cyanallagma (Zygoptera: Coenagrionidae)

6 Pages·2001·1.6 MB·English

by  Lencioni, F A A

Odonatologica30(3): 345-350 September1,2001
Cyanallagmaangelae spec. nov.anda key
tothenon-Andeanspeciesof Cyanallagma
(Zygoptera: Coenagrionidae)
F.A.A.Lencioni
Rua dos Ferroviários 55,Jardim Mesquita,BR-12300-000 Jacareí,S.P.,Brazil
e-mail: [email protected]
ReceivedSeptember8,2000/RevisedandAcceptedJanuary22,2001
Thenew sp.isdescribedfrom 15 cj and 3 9collected inSales6polis-SaoPaulo State
(23°35’52”S,45043’4I”W;alt. 1074 m) 14-BI and 3-IV-1999.Keysandillustrations tothe
non-Andean speciesofCyanallagmaaregiven.
INTRODUCTION
Theexclusively SouthAmericangenusCyanallagma Kennedy contains 13species
of which nine (C. acutum Ris, C. demarmelsiCruz, C. gaianii De Marmels, C.
laterale (Selys), C. ovigerum (Calvert), C. risi De Marmels, C. tamaense De
Marmels, C. tepuianum DeMarmels,andC. thelkterionDe Marmels) occurinthe
mountainousregions ofVenezuela,Colombia, Ecuador, Peru, and Bolivia. DE
MARMELS(1997)provided thelatestinformationonthesespecies (except forC.
acutum).Asmallergroupcomprisedof C.bonariense(Ris), C. interruptum(Selys),
C. nigrinuchale (Selys), and C. trimaculatum(Selys) occur in southern Brazil,
Argentina andChile.Thewell-known C. interruptumismostaustralzygopteranof
thenewworldwithrecords extending as farsouthas 50°southlatitude(MUZON,
1995).
During atriptoSalesdpolis, SaoPaulo(SP) Stateon 14Marchand3April 1999,
my fatherandI collected 15malesand 3femalesofaCyanallagma whichIwas
unableto identify. Icompared these specimens with congeneric specimens of
Cyanallagma in my collection and using literature.Initially, I believed they
represented thepoorly known C. trimaculatumeventhough theparaprocts were
smallerthantheillustrationbySANTOS(1965).Atmyrequest,Dr DennisPaulson
sent me copies ofthe original descriptions ofAcanthagrion trimaculatum,A.
346 F.A.A. Lencioni
nigrinuchale andA. interruptum. Fromthese descriptions I concludedthat the
illustrationby Santos was partially correct, andthatthe specimens I collected in
Salesopolis represented anewspecies.
In April, 2000 I visitedthe Selys Longchamps collectionin Brussels where I
examined type material ofCyanallagma interruptum, C. nigrinuchale and C.
trimaculatum.Withphotos oftheonlyoneintactmaleofC. trimaculatum,provided
mebyMrJeromeConstant,Iincludeanillustrationoftheappendages ofthispoorly
knownspecies.
1 trimaculatum(Syntype)
2 interruptum(ARGENTINA: ChubutProv.)
3 nigrinuchale(Brazil;
MinasGerais, Lagoa dos
Cordois) 4 bonariense (ARGENTINA:Buenos
AiresProv.)
Figs 1-5=male
caudalappendages
a=lateral
b =mediodorsal
NOTE:
Illustrationsnotto
scale
5 angelae (Brazil:Sao PauloState,Salesopolis)
6 nigrinuchalemale (Brazil:Minas
Gerais,Lagoa dosCordois)
Cyanallagmaangelaesp.n. 347
CYANALLAGMAANGELAE SP. NOV.
Figures: 5(appendages),7(head),8(thorax),9 (abdomen),10(femaleabdominal segments 8-10)
14(femaleprothorax)
Material- Holotype3:Brazil:StateofSaoPaulo,Salesopolis(23°35’52”S,45°43’41”W;alt1074m),
3-IV-1999,F.A.A,Lencionileg.;- Allotype$:samedata asholotype;- Paratypes:samelocalityasholotype,
123,2$, 14-III-1999,F.A.A.Lencioni&F.Lencionileg.;2<J,3TV-1999,F.A.A.Lencionileg.—Allspecimens
aredepositedin theauthor’scollection.
Etymology.-ThisspeciesisnamedformywifeAngela S.L. Rodrigues,forhercontinuous
supportand encouragement duringmyresearch.
MALE(Holotype). -Head black, following areasblue: labrum, anteclypeus,
genae,frons (reaching thebase ofantennae), two small spots in eachside of the
distalborderofpostclypeus andpostocularspots; epicraniumandpostclypeus black
(Fig.7).
Thorax.-Pterothoraxwithmesepistemum blackwithsky blue antehumeral
stripe interruptedmedially thusforming aninvertedexclamationpoint,broadblack
stripesalonghumeralsecondlateralandinterpleuralsutures,remainingpartsofmes-
and metepimeron sky blue; metepimeron pale yellow.
Wings. - Entirely hyaline,venationblack;pterostigma black, covering0.8ofcell
inallwings; postnodals inFW
11, in HW 9; R, in FW
originating just before 5th
postnodal andjustbefore4thin
HW. 7 angeldaoers,almale,head 8angelae,male,thorax
Abdomen. SegmentsIII- lateral
-
-VII black dorsally and light
yellow ventrally; segmentVIII
laterally andinproximalhalfof 9 angelae,male,abdomenlateral
dorsumblack, ventrally light
NOTE:
yellow, and in distalhalf of Illustrationsnot
toscale
dorsum blue; segment IX as
VIII, but entirely blue on 10angelae, female,abdominal
dorsum; segment X as VIII, segments8-10,lateral
except formedial0.75ofdorsumblue(Fig. 9).
Measurements(mm).- Totalbodylength(withappendages)27.5;- abdomen23;- forewing16;-
hindwing15.
FEMALE(Allotype).-Very similartomalewiththefollowing differences:general
colorationpaler thaninmaleandantehumeralstripe not interrupted.
Wings. - Entirely hyaline; pterostigma lightbrowncovering 0.75 of cellin all
wings. PostnodalsinFW 11,inHW9;R inFWoriginatingjustbefore5thpostnodal,
2
at4'h in HW.
Abdomen.—Abdominalsegments as inmale,except8-10as inFigure 10.
348 F.A.A.Lencioni
Measurements
(mm).- Totalbody length
(with appendages) 28; -
Abdomen23; - forewing
16;- hindwing 15.
VARIATION. - The 11 nigrinuchale(ARGENTINA: Misiones,Parque
series of 14 males Nac. iguazu)
showslittlevariabili-
ty in color, post-
nodals FW 9
(10,7%), 10 (50%),
11 (35,7%) and 12
(3,6%); in HW 8 12 interruption (CHILE; RegionX.nrLaguna Pedro.S
(28,5%), 9 (53,6%) ofturnofftoMinaElToqui)
and 10(17,9%).
REMARKS. - The
type locality is a
small flooded area
fed by a small
stream. A dirtroad
going from Saleso-
polis to Caraguata-
13 bonariense (ARGENTINA;BuenosAires Prov., Sierra delaVentanaat
tuba crosses the ArroyodelLoro'
flooded area and a
patch oftheAtlantic
forest. Thisarea, in
spite of being pro-
tected, has under-
goneintensedefore- Figs 10-13=posterior lobeof
station. On 14-III- prothorax andmesostigmal
-1999,the tempera- 14 angelaeSa(Blersadzpilo:lSisa)oPauloState, pala=tedsoorsfofelamtearalel
turewas approxima- b=dorsal
tely 19°Candcloudy.
We collectedhere foronly a fewmoments beforeitrained.The 36 specimens of
Zygoptera we collected included: 4 6 Homeoura cheliferum (Selys), 1 cJ
Heteragrion beschkii HageninSelys, 3 6 and3 ? Ischnuracapreolus (Hagen), 2
6 Oxyagrion microstigma Selys, 3 S O. terminaleSelys, 1 S Telebasiscarmesina
Calvert, 2 6 Acanthagrion lancea Selys, 1 S A. gracile (Rambur),2 9 Telebasis
sp.and 12c? and2 9 Cyanallagma angelae. Ifoundtheweatherconditionssimilar
whenIreturned tothetypelocalityon3-IV-1999andcollected ISO.microstigma,
1 S O. haematinumSelys and,3 <?and 1 9 C. angelae.
Cyanallagmaangelaesp.n. 349
KEY TO ADULTMALESOF THENON-ANDEAN CYANALLAGMA
I Paraproctinlateralviewlongerthan cerci,tipofparaproct inlateral viewrounded(Fig.la), HW 17-19
mm,SantaCruzandTeresopolis(RiodeJaneiroState),Brazil trimaculatum
- Paraproctsubequaltoorshorterthancerci,tipofparaproct bluntlypointed(Figs2-5) 2
2 Cercusinlateralview withabroadlytriangulardecumbenttooth(Fig.2a),HW 16-17mm,Patagonian
areasofAigentinaandChile iinterruptum
- Cercus withdecumbenttoothreduced (Fig. 3a,4a,5a) 3
3 Smallerspecies(HW 11.5-13mm),cercusapproximatelytwicethelengthofparaproct(Fig.3a),attenuate
tipofcercusdirectedposterodorsally(Fig.3a),bodypattern asinFig.6;SaoPauloandMinasGerais,
Brazil; MisionesProv.,Argentina nigrinuchale
- Largerspecies(HW15-17mm),cercusandparaproctsubequal(Figs4a,5a),tipofcercusdirectedposteriorly
(Fig.4a)or ventroposteriorly(Fig.5a) 4
4 Tipofcercusrounded, directed posteriorly(Fig.4a,arrow); small ventraltoothatapproximately0.50of
cercus, visiblein lateralview (Fig.4a),BuenosAireslowlands ofArgentina,Uruguay bonariense
- Tipofcercusacuminate,directedposteroventrally(Fig.5aarrow);ventral toothbasal,hardlyvisible in
lateralview(Fig.5a),SaoPaulo State,Brazil angelae
KEY TOADULT FEMALESOF THENON-ANDEAN CYANALLAGMA
(EXCLUDINGC. TRIMACULATUM)
1 Smallerspecies(HW13mm),posteriorlobe ofprothoraxevenlyrounded indorsal view(Fig.11),ventral
surfaceofposteriorlobe notvisible ,nigrinuchale
- Largerspecies(HW 15mmormore),posteriorlobe ofprothoraxbi-(Fig.12)ortrilobed(Figs 13,14)in
dorsalview,ventralsurfaceofposteriorlobenotvisible(Fig. 12)orvisible(Figs 13,14) 2
2 Posteriorlobeofprothoraxbilobate,themedialportionrecessed(Fig. 12),ventralsurfaceofposteriorlobe
notvisible interruptum
- Posteriorlobetrilobate, themedialportionproducedposteriorly(Figs 13,14),ventralsurfaceofposterior
lobevisible indorsal view 3
3 Posteriorlydirectedmediallobe ofprothoraxsmall,notsurpassinglaterallobes;ventralsurfaceofposterior
loberoundedandstronglyproducedposteriorly(Fig. 12);largerspecies(HW18.5-19.5mm)
bonariense
- Posteriorlydirectedmedial lobe large,notsurpassinglaterallobes;ventralsurface ofposteriorrectangular
withroundedcomersandstronglyproducedposteriorly(Fig.14);smallerspecies(HW 15 mm)
angelae
ACKNOWLEDGEMENTS
DrROSSERW.GAR1SSONprovidedmewithcomparativematerial,literatureand illustrations and Dr
DENNISPAULSON sentmevaluable dataonthedistribution ofCyanallagmanigrinuchaleandliterature. Dr
JAN1RAM.COSTAfacilitatedmyaccessatthecollection oftheMuseuNacional,RiodeJaneiroandprovided
mewith comparativematerialandliterature.Prof.FREDERICOLENCIONI, myfather,assisted mewith
fieldwork,MrBEDROS ORCHANIANprovidedEnglishsuggestionsonthemanuscript,andMrJEROME
CONSTANTandtheEntomologicalstaffoftheIRSNBhelpedmewiththespecimensoftheSelysLongchamps’s
collection. DrJAVIERMUZONprovidedrecords andspecimensofC. nigrinuchalefromArgentinaFigures
1,5,7-10and14wereexecutedbyF.A.A,Lencioni;allothersprovidedbyR.Garrison.Toallofthesepersons,
Iextendmysincerethanksandappreciation.
350 F.A.A.Lencioni
REFERENCES
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Calvert (Zygoptera:Coenagrionidae).Odonatologica18(3):245-252.
DEMARMELS, J.,1997. New andlittle-knownspeciesofCyanallagmaKennedy, 1920fromAndes
andfromPantepui(Zygoptera:Coenagrionidaei).Odonalologica26(2): 135-157.
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