Diagnosis and relationships of the myrmicine ant genusIshakidrisgen.n. (Hymenoptera: Formicidae)

摘要

Abstract.The ant genuslshakidrisfrom Sarawak is described as new. Its relationships with the Brasilian monotypic genusPhalacromyrmexKempf and the Malagasy monotypic genusPilotrochusBrown are discussed, and thePhalacromyrmexgenus‐group is established to hold the three genera. The resemblances oflshakidristo the smithistrumiform dacetine genusGlamymmyrmexWheeler and the agroecomyrmecine genusTatuidrisBrownKempf are discussed and the similarities are analysed as the results of convergence in the characters concerne