Paroosternum Scott, 1913

Ek, Martin Fiká Č & Jia, Fenglong, 2011, On the identity of Anchorosternum sinense (Coleoptera: Hydrophilidae: Megasternini), Zootaxa 3121, pp. 66-68 : 66

publication ID	https://doi.org/ 10.5281/zenodo.279396
DOI	https://doi.org/10.5281/zenodo.6184787
persistent identifier	https://treatment.plazi.org/id/B97CDE6A-E679-FFD3-65D9-FB40AE4DF92D
treatment provided by	Plazi
scientific name	Paroosternum Scott, 1913
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Paroosternum Scott, 1913 View in CoL

Paroosternum Scott, 1913: 220 View in CoL . Type species: P. degayanum Scott, 1913 View in CoL (by original designation). Anchorosternum Jia, Wu View in CoL , & Pu, 2001: 155, new synonym. Type species: A. sinensis Jia, Wu & Pu, 2001 View in CoL (by original designation).

Taxonomic note. Anchorosternum View in CoL is identical with Paroosternum View in CoL in all external diagnostic characters: (i) antennal grooves not reaching lateral margin of the hypomeron; (ii) median portion of prosternum elevated, with lateral parts deeply excised [character unique for Paroosternum View in CoL within the Megasternini View in CoL ]; (iii) preepisternal plate elongate oval; (iv) metaventrite without anterolateral ridge; (v) femoral lines complete, reaching anterolateral corner of metaventrite [not drawn in the original illustration, but mentioned in generic description]. In addition, the type species of Anchorosternum View in CoL agrees with the previously described species of Paroosternum View in CoL (see below). For all these reasons, we consider Anchorosternum View in CoL as a junior subjective synonym of Paroosternum View in CoL .