Identification and character analysis of the Acerentomidae (Protura) of the northeastern Palearctic (Protura: Acerentomidae)

Abstract

This paper is a summary of proturan fauna from Siberia and the Russian Far East, collectively termed the northeastern Palearctic. Special attention is given to the analysis of Acerentomidae, which is extraordinarily diverse in these regions (31 species). A key to species and a brief exposition of distribution of each genus are provided. A redescription of Imadateiella sharovi is presented, additional morphological characters are added for Nipponentomon khabarovskense, N. bidentatum, Yamatentomon yamato and Callientomon chinensis, and additional collection data are given for Y. yamato, C. chinensis, Nipponentomon jaceki and N. nippon. A cladistic analysis is presented of hypothetical relationships among the discussed acerentomid taxa. A scheme for ventral porotaxy is proposed, and the taxonomic importance of porotaxic characters within Acerentomata is discussed. Some biogeographical and phylogenetic considerations are given.

Revision ofVesiculentomon, Nosekientomonn. g. (Protura: Acerentomidae, Nipponentominae), and a Key to Genera of Nipponentominae

“…41). Monophyly of Acerentomidae was already supported by the analysis of 67 morphological characters for 35 species of Acerentomata (Shrubovych 2014). The topology supports a monophyletic position of Berberentulinae.…”

“…The topology supports a monophyletic position of Berberentulinae. Berberentulinae is a subfamily including many genera (29 genera according to Szeptycki 2007) (Shrubovych 2014). In the present analyses, we included only 4 species of Berberentulinae, therefore more information about genetic data for morphologically differing genera of Berberentulinae is needed (such as Amphientulus Tuxen, 1981, Australentulus Tuxen, 1967, Kenyentulus Tuxen, 1961, Silvestridia Bonet, 1942, and Tasmanentulus Tuxen, 1984 to clearly confirm monophyly or even discuss family status for subfamily Berberentulinae.…”

“…Head seta designations follow Rusek et al (2012); terminology for body chaetotaxy and porotaxy follows Szeptycki (1988Szeptycki ( , 1993 and Shrubovych (2014), body indices (PR, CF, BS, TR, EU) follow Tuxen (1964). Abbreviations used in the description are as follows: Abd = abdominal segments, al = anterolateral pore, cp = clypeal pore, fp = frontal pore, psl = posterosublateral pore, psm = posterosubmedial pore, spm = sternal posteromedial pore, spsm = sternal posterosubmedial pore, Th = thoracic segments.…”

Two new species ofAcerentulusBerlese 1908 (Protura: Acerentomata: Acerentomidae) with their barcode sequences and a key to thecunhaigroup

“…All specimens are mounted as microscopic slides in Faure's medium (Dunger & Fiedler 1989) or Marc André II medium. Chaetotaxy and porotaxy are labeled as in Rusek et al (2012), Szeptycki (1991) and Shrubovych (2014). The term "compound pores" defines groups of pores placed close to each other on the body (= "composed pores" according to Szeptycki 1991).…”

Genera of the Protura of the World: diagnosis, distribution, and key

“…Unfortunately, porotaxy and the shape of accessory setae of the majority of species are still unknown and, for many genera, their use as diagnostic characters is not practicable. Nevertheless, they are among those characters used by Shrubovych (2014) in her cladistic approach to the Acerentomidae of Northeastern Palearctic. Other useful diagnostic characters are the head chaetotaxy and porotaxy (Rusek et al 2012); currently they are mainly provided in new species description, but some, like the presence/absence of postpseudocular seta, have been used for the diagnosis of new genera (e.g.…”