title: On the interference color variations in the Hedychridium roseum species-group (Hymenoptera Chrysididae) from Bulgaria
abstract: A number of the Hedychridium roseum species-group individuals (Hymenoptera Chrysididae), captured mainly in Bulgaria hare here studied. We discovered that the presence/absence on metasoma of red interference color is a variable and unstable feature both in the males and the females of this species-group. The body interference colors are directly connected to the cuticle inner structure and thus to body features. As a consequence, the variable metasoma coloration is a valid taxonomic feature ulti
journal: BIODIVERSITY JOURNAL