TY  - GEN
A1  - Borysenko, Leonid H.
T1  - Description of a new genus of primitive ants from Canadian amber, with the study of relationships between stem- and crown-group ants (Hymenoptera: Formicidae)
T2  - Insecta mundi : a journal of world insect systematics
N2  - A detailed study of the holotype of Sphecomyrma canadensis Wilson, 1985 (Hymenoptera: Formicidae) from Canadian amber has led to the conclusion that the specimen belongs to a new genus, here named Boltonimecia gen.n. Since the taxonomy of stem-group ants is not well understood, in order to find the taxonomic position of this genus, it is necessary to review the classifi cation of stem-group ants in a study of their relation to crown-group ants. In the absence of data for traditional taxonomic approaches, a statistical study was done based on a morphometric analysis of antennae. Scape elongation is believed to play an important role in the evolution of eusociality in ants; however, this hypothesis has never been confirmed statistically. The statistical analysis presented herein lends support to the view that antennal morphology reliably distinguishes stem-group ants from crown-group ants, to determine whether a species belongs to one or the other group. This, in turn, may indicate a relationship exists between eusociality and scape elongation. A review of Cretaceous records of ants is made and the higher classification of Formicidae with definitions of stem and crown groups is proposed. Newly obtained data are discussed focusing particularly on the origin, evolution and diversity of ants.
T3  - Insecta Mundi - 570 
KW  - Formicidae
KW  - stem-group ants
KW  - crown-group ants
KW  - taxonomy
KW  - Cretaceous
Y1  - 2017
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/43767
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-437678
SN  - 1942-1354
EP  - 58
PB  - Center for Systematic Entomology, Inc.
CY  - Gainesville, FL
ER  -