REVIEW OF THE AUSTRALIAN NICOLETIINAE (ZYGENTOMA, NICOLETIIDAE)

The Australasian species and records of Nicoletiinae are reviewed and the phylogeny discussed. The genera Trinemura Silvestri, Metrinura Men des and Hemitrinemura Mendes are redefined on the basis of the number of vesicles and stylers on the urosternites, and a new genus Subtrinem ura is described. The keys of Mendes and Wygodzinsky are combined and modified to form a key to the world genera of Nicoletiinae. Trinemura watsoni, sp, nov., T. troglophila, sp. nov., T. calcaripalpa, sp. nov. , Metrinura humusa, sp. nov., M. queenslandica, sp. nov., M, pedicella , sp, nov. and Subtrinemura spelaea, sp, nov, are described. M. russen denensis (Smith & Shipp), comb. nov. is redescribed. The identity of T . novaehollandiae Silvestri, M. novaecaledoniae (Silvestri), S, excels a (Silvestri), comb. nov., S. anemone (Smith), comb. nov., S. norfolke nsis (Smith), comb. nov., H. pacifica (Carpenter), comb, nov., H. grac ilis (Carpenter), comb. nov. and H, subarmata (Paclt) as well as two f urther undescribed species of Trinemura and Metrinura are discussed an d details of measurements and head setation given. A key is provided t o the species of Trinemurodes, Trinemura, Metrinura, Hemitrinemura and Subtrinemura. Measurement data for all Australasian species show that variation within species is often as great as variation between speci es and it is concluded that measurements can be used to separate only certain species with quite unusual proportions. Mature male specimens with their obvious secondary sexual characteristics are necessary for the definitive determination of all species.