Variation and pigmentation in the milliped, Xystocheir brachymacris Shelley, 1996, from the northern Sierra Nevada foothills, California, USA (Polydesmida: Xystodesmidae: Xystocheirini)

  • A newly discovered population of Xystocheir brachymacris Shelley, 1996 (Polydesmida: Xystodesmidae: Xystocheirini), in Placer County (Co.), California, exhibits an unusual grayish-black color dorsally with mottled, ovoid patches at paranotal bases; it cons titutes northern generic and specifi c range extensions of ~28.4 km (17.6 mi). The gonopods differ from those in the El Dorado Co. population in having shorter/acuminate prefemoral processes and blade-like, rather than spatulate, processes “B” that angle away from the solenomere instead of overhanging it. Additionally, a strong distomedial prefemoral lobe, absent from the El Dorado population, arises from the stem in Placer Co. males. Authorship of Xystocheirini is properly attributed to Hoffman, 1980.

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Author:Rowland M. Shelley, Jamie M. Smith, Deren J. Ross
Parent Title (English):Insecta mundi : a journal of world insect systematics
Series (Serial Number):Insecta Mundi (0371)
Publisher:Center for Systematic Entomology
Place of publication:Gainesville, Fla.
Document Type:Part of Periodical
Date of Publication (online):2014/11/25
Year of first Publication:2014
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2014/11/25
Tag:El Dorado Co.; Placer Co.; Sierra Nevada; Xystocheir; branch; process “B”; projection; solenomere
Page Number:6
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 590 Tiere (Zoologie)
Sammlungen:Sammlung Biologie / Sondersammelgebiets-Volltexte
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell 3.0