They are best differentiated from each other by the shape of the pygophore and by its dorsal bifurcation and to lesser extent by the shape of the aedeagus The shape of the claspers is quite uniform All are associated with various en demic species of ID: 71238
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CALIFORNIAACADEMYOFSCIENCESTheendemicspeciesofCyrtopeltisarerepresentedbyacomplexoffivecloselyrelatedspecieswhichagreequitecloselywiththeabovedescription.Theyarebestdifferentiatedfromeachotherbytheshapeofthepygophoreandbyitsdorsalbifurcation,andtoalesserextent,bytheshapeoftheaedeagus.Theshapeoftheclaspersisquiteuniform.Allareassociatedwithvariousen-demicspeciesofScalesia(Compositae)incontrasttothenearlycosmopolitanC.modesta,whichisassociatedwithtobaccoandtomatoesintheGalapagosandelsewhere.Someinsularendemicityisevidentinthespeciesbeforeus;onlyC.affinisandC.aridaoccuronthesameisland(SantaCruz).Allthenativespeciesaregenerallyyellowishtopaletranslucent,butitisindicatedthatlivingspecimenshaveagreenishtinge.Allhavebrown,sparselysetaceouseyesandarecomparativelyuniformindimensions.Theconformityoftheirpygophoreswiththedorsalbifurcationsnotexceed-ingtheventralbifurcationsinlengthcloselyapproachesthesituationinC.(E.)lacteus(Spinola)frommainlandChilewithwhichthiscomplexmayhaveaffinities.Cyrtopeltis(E.)gummiferaeisdifferentiatedbyitscontrastinglydarkeryellowfronsandvertex,thesubglabrousantennaI,thedarkerantennaIV,thedorsalbifurcationofthepygophorewithitsshortapicalprojectionbearingatuftofsetae,andbyitssmallersize.12.Cyrtopeltis(Engytatus)lielleriGagne,newspecies.(Figure23.)MALE.Length2.55mm.(2.52to2.55mm.).Head:Length0.365mm.(0.365to0.374mm.);width0.425mm.(0.425to0.443mm.);vertexwidth0.178mm.(0.170to0.187mm.);tylusandfronsnotnoticeablydarkeryellow,setaesparserondorsumthaninC.gummiferae.Antennae:I,0.221mm.(0.212to0.229mm.),sparselysetaceous;II,0.620mm.(0.620to0.646mm.),setaemorerecumbentonproximalhalfthanondistalhalf;III,0.578mm.(0.578to0.637mm.);IV,0.297mm.(0.297to0.323mm.),samecolorasbody.Pro-notum:Length,0.374mm.(0.357to0.374mm.);width0.595mm.(0.595to0.620mm.);vestitureasinC.gummiferae.Rostrum:Length,0.977mm.(0.977to0.986mm.),reachingmiddleofmesocoxa.Legspale.Pygophore:Distalhookofdorsalbifurcationlong,lackingtheapicaltuftofsetae,butwiththreesetaedorsally(fig.23a);ventralbifurcation,whenviewedfromtherear,stronglyelbowedsubdistallyandprojectedtotherightinasubdistalhump;distalknobevenlytrapezoidal(fig.23b).Claspersandaedeagusasillustrated(figs.23c,d,e).FEMALE.Differingfrommaleasfollows:Length2.27mm.(2.25to2.30mm.).Head:Length0.374mm.(0.348to0.382mm.);width0.391mm.(0.391to0.416mm.);vertexwidth0.204mm.(0.178to0.204mm.);uniformlypaleyellow.Antennae:I,0.212mm.(0.187to0.221mm.);II,0.518mm.(0.493174[PROC.4THSER.