Morphology and phylogeny of Dicellophilus, a centipede genus with a highly disjunct distribution (Chilopoda: Mecistocephalidae)

摘要: The centipede genus Dicellophilus Cook, 1896 (Chilopoda: Geophilomorpha: Mecistocephalidae) has been revised by means of a comparative examination representative specimens all the species: morphological variation documented both light and scanning electronic microscopy, geographical distribution reassessed updated based on published new records, phyletic relations between species have analysed evidence. is confirmed as highly distinct lineage, supported synapomorphies in labrum pattern coxal organs. Four are morphologically recognized, each them occurring one three limited, disjunct areas restricted boreal temperate belt: carniolensis (C.L. Koch, 1847) limited to central Europe (central–eastern Alps, Dinarids, Carpathians, Dobrogea), pulcher (Kishida, 1928) occurs Japan (Honshu), anomalus (Chamberlin, 1904) limatus (Wood, 1862) occur south-western part North America (California Oregon). High support found for following relationships: (D. anomalus + D. limatus))). strongly some autapomorphic traits, including enlarged clypeus fewer mandibular lamellae, whereas sister D. share derived features, an elongated head associated appendages, longer antennal setae, stronger forcipular tubercles. peculiar historical scenario suggested phylogeny very unusual respect biogeographical patterns known other major groups terrestrial animals. © 2010 Linnean Society London, Zoological Journal Society, 2010, 158, 501–532.