A new Mexican species of Denisiella (Collembola : Sminthurididae)

Abstract

Members of the genus Denisiella are very small globoid Collembola, with only six species previously described freom all over the world (PalaciosVargas, 1995). They are very interesting because they display well differentiated sexual dimorphism, mainly in the antennae of the male and some other small characteristics as the type of setae. Most of them measure less than one milimeter, are difficult to collect and few specimens are obtained freom Berlese funnel samples. After the study of some Mexican specimens we have discovered new species freom Nayarit State, and, though only females were located it is possible to provide a description, as several features of its morphology are unique.