An annotated list of the name-bearing types of species-group names in Odonata preserved in the University of Michigan Museum of Zoology

In the last few years, the emergence and wide dissemination of Escherichia coli strains showing resistance to broad-spectrum cephalosporins and monobactams, due to the production of extended-spectrum b-lactamases (ESBLs), has been reported. In the 1990s, early publications on ESBLs reported blaSHV or blaTEM variants, which were especially detected in Klebsiella isolates recovered in intensive care units. The situation has been changing in the last few years and CTX-M b-lactamases are an emerging mechanism of resistance, mainly among E. coli isolates (Cantón et al., 2008; Rossolini et al., 2008). More than 65 different CTX-M blactamases belonging to six different groups have been reported to date (Rossolini et al., 2008).