Immature stages of Rabigus tenuis (Fabricius, 1792) (Coleoptera, Staphylinidae, Staphylininae) with observations on its biology and taxonomic comments

The paper describes and illustrates the morphology of all preimaginal stages of Rabigus tenuis (Fabricius, 1792). including a detailed account of chaetotaxy and porotaxy. This is the First description of the immature stages for the genus Rabigus. morphological differences between the first (L-1) and next (L-2 and L-3) larval instars are to be found in the: chaetotaxy of head. profemur, protibia, tarsungulus. abdominal tergites, sternites ana urogomphi, structure of antennae. maxillae and urogomphi, microstructure of abdominal tergites, proportions of the bodyparts. body colour and habitus. Diagnostic characters of egg. larva and pupa of this species are given. Some data oil its distribution, environmental requirements and biology under laboratory conditions are also provided. All immature stages of R. tenuis were compared with those of related genera and the respective distinguishing characters are provided.