Toshko Ljubomirov

• Biodiversity Journal, 12 (4): 0997-1009

  Franco Strumia & Toshko Ljubomirov
  On the interference color variations in the Hedychridium roseum species-group (Hymenoptera Chrysididae) from Bulgaria
  https://doi.org/10.31396/Biodiv.Jour.2021.12.4.997.1009

  ASBTRACT
  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 ultimately related to the DNA of single individuals. In the case of Hedychridium roseum species-group the taxonomy is complex and often based on subtle features. A review including also the influence of interference colors is discussed and integrated with the most recent taxonomy. In addition, the presence in Bulgaria of the following six species is confirmed: Hedychridium sculpturatum (Abeille de Perrin, 1877); H. scutellare (Tournier, 1878); H. rossicum Gussakovskij, 1948; H. roseum (Rossi, 1790); H. insulare Balthasar, 1953; H. caputaureum G. Trautmann et W. Trautmann, 1919. The lognormal distribution of above species is entirely positive thus statistic inference shows that in Bulgaria all species of Hedychridium roseum species-group have been captured and studied.

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