Collembola: Neanuridae: Pseudachorutinae) from China

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Collembola: Neanuridae: Pseudachorutinae) from China

Zootaxa 1895: 53–58 (2008) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA Copyright © 2008 · Magnolia Press ISSN 1175-5334 (online edition) A new species of genus Pseudachorutes Tullberg, 1871 (Collembola: Neanuridae: Pseudachorutinae) from China YAN GAO1 & JOSÉ G. PALACIOS-VARGAS2 1Institute of Plant Physiology and Ecology, Shanghai Institute for Biological Sciences, CAS. 300 Fenglin Road, Shanghai, 200032 China P. R. E-mails: [email protected] 2Laboratorio de Ecología y Sistemática de Microartrópodos, Depto. Ecología y Recursos Naturales, Fac. Ciencias, UNAM, 04510, México D. F. E-mail: [email protected] Abstract A new species of Pseudachorutes, P. polychaetosus sp. nov., from Lishan Mountain, Shaanxi Province, Northwest China, is described and illustrated. It is distinct from other species in being polychaetotic in having both macrosetae and microsetae well differentiated and in strong hypertrichosis. Males of the new species are sexually dimorphic, a character not known before in the genus. Key words: taxonomy, hypertrichosis, sexual dimorphism, northwest China Introduction Pseudachorutes Tullberg is a large genus belonging to the subfamily Pseudachorutinae. The genus has about 100 described species worldwide and has been described from China. Several species have recently been found from Lishan Mountain, Shaanxi Province (Gao et al. in press). We describe one further new specie here. It has the characters normal for Pseudachorutes, 8+8 eyes, a well developed furcula, oval postantennal organ, mandible lacking a molar plate, elongate maxillae and anal spines absent, but it also possesses a few characters not reported before for the genus. In spite of this we assign it to Pseudachorutes partly because only male specimens were found. We provide a description of the species and illustrate the morphology in detail. All the type specimens are deposited at the Insect Specimen Gallery, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences. Abbreviations Abd. = abdominal segment; Ant. = antennal segment; asl = above sea level; M = macrosetae; m = mesosetae or microsetae; PAO = postantennal organ; S = cylindrical sensilla on Ant. IV; sgd = dorsal guard sensillum; Accepted by P. Greenslade: 9 Sept. 2008; published: ?8 Oct. 2008 53.

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