Abstract
Chribellphoruraallanae (Christiansen & Bellinger, 1980), a poorly known Nearctic springtail, is redescribed and important morphological characters are illustrated (Figs 1–7). The genus is characterized by the following characters: postantennal organ with one vesicle divided into five lobes, antennal segment IV with apical vesicle closely flanked by two papillae, sense organ of the third antennal segment with four papilla, four guard setae, two straight sensory clubs and two sensory rods, very similar in shape and length, labial palp of 0-type, abdominal sternum IV divided ventrally into two subsegments, furcal remnant as a finely granulated area with three rows of setae posteriorly, tibiotarsi with clavate setae in distal whorl and anal spines present. The taxonomic status of this Chribellphorura is also discussed.
Highlights
The monotypic genus Chribellphorura was established by Weiner (1996) to accommodate Onychiurus (Archaphorura) allanae described by Christiansen and Bellinger (1980) from localities in Oregon, USA
As the original description of C. allanae is incomplete and we have found differences between the original description and the specimen examined, the current paper presents a redescription of the C. allanae, illustrations of its most important taxonomic features, and notes on its taxonomic position
IV with apical vesicle flanked by two papillae; postantennal organ (PAO) with one five-lobed vesicle; Labium of type 0; Tibiotarsi I–III with 2,3,3 clavate tenent setae
Summary
The monotypic genus Chribellphorura was established by Weiner (1996) to accommodate Onychiurus (Archaphorura) allanae described by Christiansen and Bellinger (1980) from localities in Oregon, USA. Weiner erected the new genus in the tribe. Oligaphorurini and emphased as its distinguishing characters the presence of an apical vesicle on the antennal segment IV and clavate dorso-distal setae on the tibiotarsi. In connection with a phylogenetic analysis of the Oligaphorurini (Paśnik and Weiner 2017) and in order to clarify the status of Chribellphorura, its type species has been reexamined. As the original description of C. allanae is incomplete and we have found differences between the original description and the specimen examined, the current paper presents a redescription of the C. allanae, illustrations of its most important taxonomic features, and notes on its taxonomic position
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