A new species of Xenylla Tullberg, 1869 (Collembola: Hypogastruridae from Peru, with a key to Neotropical species of the genus

A new species belonging to genus Xenylla Tullberg, 1869 from Peru is described and illustrated. The new species, Xenylla gwiazdowiczi sp. nov., can be distinguished from previously- described Xenylla species by combination of the following characters: mucro separated from dens, presence of complete row of setae c on dorsal side of the head, four thick sensilla on antennal segment IV, 19,19,18 setae on tibiotarsi of legs I-III, slightly serrated setae on abdominal segments V-VI, presence of two weakly clavate tenent hairs on each leg. The new species resembles X. spinosissima Najt & Rubio, 1978 and X. humicola (Fabricius, 1780). Similarities between them have been discussed. An identification key to Neotropical species of the genus is provided.