  We carried out a search for new infrared star clusters, stellar groups and
candidates using WISE images, which are very sensitive to dust emission
nebulae. We report the discovery of 437 embedded clusters and stellar groups
that show a variety of structures, both in the stellar and nebular components.
Pairs or small groupings of clusters are observed, suggesting multiple
generations at the early formation stages. The resulting catalogue provides
Galactic and equatorial coordinates, together with angular sizes for all
objects. The nature of a representative test sub-sample of 14 clusters is
investigated in detail by means of 2MASS photometry. The colour magnitude
diagrams and radial density distributions characterize them as stellar
clusters. The 437 new objects were found in the ranges
$145^\circ\,\leq\,\ell\,\leq 290^\circ$ and $-25^\circ\,\leq\,b\,\leq
20^\circ$, and they appear to be a major object source for future studies of
star cluster formation and their early evolution. WISE is a powerful tool to
further probe for very young clusters throughout the disk.
