Ilyphagus Chamberlin, 1919 includes abyssal, fragile benthic species. Most species have large cephalic cages but chaetae are brittle and easily lost which may explain why the original definition included species with a cephalic cage or without it. The type species, Ilyphagus bythincola Chamberlin, 1919, together with another species (Ilyphagus pluto Chamberlin, 1919) were described as lacking a...

Abstract Several individuals of free-living copepods were found in tap water the Unidad Académica Mazatlán (Instituto de Ciencias del Mar y Limnología). These turned out to belong a new species freshwater genus Paracyclops. Paracyclops poppei , P. hirsutus and chiltoni only reported Mexican ecosystems, record fiersi sp. nov. is fourth confirmed from Mexico. The seems be related hardingi bromeli...

Twenty-three known species of the Colletes clypearis speices group from China are treated in this paper. C. cinerascens Morawitz 1893, C. clypearis Morawitz 1876, C. floralis Eversmann 1852, C. impunctatus Nylander 1852, Colletes paratibeticus Kuhlmann 2002 and Colletes sodalis (Cameron 1897) are newly recorded from China. C. harrerioides sp. n., C. heilongtenensis sp. n., C. hirsutus sp. n., C...