A new European species of Ceratophysella (Collembola, Hypogastruridae) revealed by morphological data and DNA barcodes

A new species, Ceratophysella stachi, from Denmark, Germany, Luxembourg, Norway, Poland, and Ukraine is described based on morphological data and DNA barcodes. It belongs to a small European group of species with type B chaetotaxy and strong tegumentary granulation with distinct fields of coarse granules: C. granulata Stach, 1949, C. lawrencei (Gisin, 1963), C. neomeridionalis (Nosek & (ervek, 1970), C. scotica (Carpenter & Evans, 1899), and C. silvatica Rusek, 1964. It differs from all of them in the chaetotaxy of lateral parts of thoracic terga II-III (setae m(6) present and one additional seta outside lateral sensilluni m(7) present or absent) that is exceptional within the whole C. armata-group. Notes on closely related species C. granulata are also given.

Automated summary

A new species, Ceratophysella stachi, from Denmark, Germany, Luxembourg, Norway, Poland, and Ukraine is described based on morphological data and DNA barcodes. It belongs to a small European group of species with unique characteristics in chaetotaxy, and differs from closely related species in the arrangement of setae on the thoracic terga.