The black species of weak-veined Lasioglossum (or Hemihalictus series) in eastern North America are revised to clarify their taxonomy and nomenclature and to facilitate identification. A subgeneric classification based upon available phylogenetic data is applied. Lasioglossum (Sphecodogastra) is applied more broadly than any previous usage to include many species typically classified as L. (Evy...

Building natural classifications for genera with complex morphological variations such as Centaurea needs the support of molecular analysis and knowledge character diversification. Here we use parsimony Bayesian analyses nuclear ribosomal ITS sequences to gain insight into sectional relationships evolution in sections Chartolepis, Cheirolepis, Cynaroides, Grosheimia, Microlophus, Paraphysis, Ph...

Cephennium chirgisianum sp. n. of western Kyrgyzstan is described. This is the easternmost known locality where this predominantly western European genus occurs. This new species is not placed in any subgenus, and problems with subgeneric diagnoses and systematics of Cephennium are discussed. The distribution of Cephennium is summarized and possible dispersal routes or areas where this genus ca...

This is the second report detailing Ptiliidae collected from forest leaf litter by the Moravian Museum expeditions to Madagascar 2010-2012. 3 new species are described and figured: Ptenidium azafady sp. n., P. lambdai sp. n., and P. tanalai sp.n., and the criteria for assessing subgeneric status discussed.

Daphnia O.F. Müller (Crustacea: Cladocera: Daphniidae) is an important model in biology. It was concluded earlier that subgenus Daphnia s.str. occurs mainly in the northern hemisphere, subgenus Daphnia (Ctenodaphnia) in the southern hemisphere, which could suggest that: (1) the subgeneric differentiation is correlated with the Laurasia-Gondwanaland subdivision and (2) D. (Ctenodaphnia) is a tax...

Wiedemannia artemisa sp. nov. (Diptera: Empididae: Clinocerinae) is described from the Balkan Peninsula. Although current subgeneric concepts are considered to have doubtful validity, the new species is tentatively assigned to the subgenus Philolutra Mik. The distribution of Wiedemannia in the Balkans is discussed.

Two new species of Atomaria Stephens, 1829 from China and Taiwan are described illustrated: (Atomaria) cooterisp. nov. johnsoni sp. New records for added: klapperichi Johnson, 1971 plecta Lyubarsky, 1995. subgeneric combinations proposed klapperichi, torrida 1971. LSID: urn:lsid:zoobank.org:pub:6A3DCCBE-8978-4D2C-B366-56C9ECEA51A4.