Myriapoda (Chilopoda, Diplopoda) of Shumen City and Shumen Plateau (NE Bulgaria): Taxonomic Structure and Zoogeographical Analysis

摘要

Myriapod fauna of the town of Shumen and Shumen Plateau has not been yet a subject of long-term systemic research. This article presents new data obtained from the conducted two years long study (April 2007 - May 2009) of Diplopoda and Chilopoda of this region of Bulgaria. In eight work sites, covering urban, suburban and rural habitats by using Barber's traps, direct sampling and soil sampling a total of 7833 myriapods were collected. Class Diplopoda was established by a total of 21 species from four orders: Glomerida (2), Polydesmida (5), Chordeumatida (2) and Julida (12). Five species are new to the fauna of the area - Polydesmus mediterraneus, Craspedosoma transsylvanicum, Nopoiulus kochii, Typhloiulus kotelensis and Megaphyllum lictor. Class Chilopoda was established by a total of 37 species from the four orders known in the country - Scutigeromorpha (1), Lithobiomorpha (19), Scolopendromorpha (5) and Geophilomorpha (11). Twenty-nine of them were registered for first time during this study. Twelve species identified in this study are new to the fauna of the area, while Cryptops trisulcatus and Shendyla carniolensis are also new to Bulgarian fauna. There are species of unknown taxonomic status as they belong to families or groups and orders of problematic species that need a thorough revision. At least one of those is new to science, which description will be published elsewhere. The 53 identified millipede species are divided into 9 zoogeographical categories of 3 zoogeographical complexes. There is no evidence of significant differences in the distribution of myriapod fauna throughout the zoogeographical categories in urban, suburban and natural habitats as well as throughout the individual sites.