01526nas a2200193   4500008004100000022001400041245015700055210006900212260001100281300001000292520087500302653002001177653001701197653001301214653001701227100002201244700002401266856004201290       2011                        eng d  a1175-532600aMorphological and molecular delineation of a new species in the Ceratina dupla species-group (Hymenoptera: Apidae: Xylocopinae) of eastern North America0 aMorphological and molecular delineation of a new species in the   cMAY 10  a35-503 aDNA barcoding is used to verify characters to morphologically differentiate genetically distinct species of eastern North American small carpenter bees, Ceratina. Here we reveal that the common eastern North American species, Ceratina dupla s. l., is actually three separate species based on fixed differences in DNA barcode sequences and morphological characters. This study adds a new species, C. mikmaqi Rehan & Sheffield, to the Ceratina dupla species-group of eastern North America, and raises another form, C. floridana formerly C. dupla floridana, to full species. Temporal niche partitioning between C. dupla and C. mikmaqi and geographic isolation of C. floridana further support the division of the C. dupla s. l. group into three species. A diagnosis and description of the new species are provided, as is a key for eastern North American species of Ceratina.10aCryptic species10aDNA barcodes10ataxonomy10aZadontomerus1 aRehan, Sandra, M.1 aSheffield, Cory, S.  uhttps://apoidea.myspecies.info/node/8