Two New <I>Vaejovis</I> CL Koch 1836 from Highlands of the Sierra Madre Occidental, Durango, Mexico
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University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 2016 Two new Vaejovis C.L. Koch 1836 from highlands of the Sierra Madre Occidental, Durango, Mexico (Scorpiones, Vaejovidae) W. David Sissom West Texas A & M University, Canyon, TX, [email protected] Matthew R. Graham Eastern Connecticut State University, [email protected] Taylor G. Donaldson West Texas A&M University, [email protected] Robert W. Bryson University of Washington, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/insectamundi Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Sissom, W. David; Graham, Matthew R.; Donaldson, Taylor G.; and Bryson, Robert W., "Two new Vaejovis C.L. Koch 1836 from highlands of the Sierra Madre Occidental, Durango, Mexico (Scorpiones, Vaejovidae)" (2016). Insecta Mundi. 985. http://digitalcommons.unl.edu/insectamundi/985 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI A Journal of World Insect Systematics 0477 Two new Vaejovis C.L. Koch 1836 from highlands of the Sierra Madre Occidental, Durango, Mexico (Scorpiones, Vaejovidae) W. David Sissom Department of Life, Earth, & Environmental Sciences West Texas A&M University WTAMU Box 60808 Canyon, TX 79016-0001 USA Matthew R. Graham Department of Biology Eastern Connecticut State University 83 Windham Street Willimantic, CT 06226 USA Taylor G. Donaldson Department of Life, Earth, & Environmental Sciences West Texas A&M University WTAMU Box 60808 Canyon, TX 79016-0001 USA Robert W. Bryson, Jr. Department of Biology & Burke Museum of Natural History and Culture University of Washington Box 351800 Seattle, WA 98195-1800 USA Date of Issue: May 13, 2016 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL W. David Sissom, Matthew R. Graham, Taylor G. Donaldson, and Robert W. Bryson, Jr. Two new Vaejovis C.L. Koch 1836 from highlands of the Sierra Madre Occidental, Durango, Mexico (Scorpiones, Vaejovidae) Insecta Mundi 0477: 1–14 ZooBank Registered: urn:lsid:zoobank.org:pub:59F54964-EE2F-4505-A885-49F22DA53E19 Published in 2016 by Center for Systematic Entomology, Inc. P. O. Box 141874 Gainesville, FL 32614-1874 USA http://centerforsystematicentomology.org/ Insecta Mundi is a journal primarily devoted to insect systematics, but articles can be published on any non-marine arthropod. Topics considered for publication include systematics, taxonomy, nomenclature, checklists, faunal works, and natural history. 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Archived digitally by Portico. Florida Virtual Campus: http://purl.fcla.edu/fcla/insectamundi University of Nebraska-Lincoln, Digital Commons: http://digitalcommons.unl.edu/insectamundi/ Goethe-Universität, Frankfurt am Main: http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30:3-135240 Copyright held by the author(s). This is an open access article distributed under the terms of the Creative Com- mons, Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. http://creativecommons.org/ licenses/by-nc/3.0/ Layout Editor for this article: Eugenio H. Nearns 0477: 1–14 2016 Two new Vaejovis C.L. Koch 1836 from highlands of the Sierra Madre Occidental, Durango, Mexico (Scorpiones, Vaejovidae) W. David Sissom Department of Life, Earth, & Environmental Sciences West Texas A&M University WTAMU Box 60808 Canyon, TX 79016-0001 USA [email protected] Matthew R. Graham Department of Biology Eastern Connecticut State University 83 Windham Street Willimantic, CT 06226 USA [email protected] Taylor G. Donaldson Department of Life, Earth, & Environmental Sciences West Texas A&M University WTAMU Box 60808 Canyon, TX 79016-0001 USA [email protected] Robert W. Bryson, Jr. Department of Biology & Burke Museum of Natural History and Culture University of Washington Box 351800 Seattle, WA 98195-1800 USA [email protected] Abstract. Two new species of the mexicanus group of Vaejovis C.L. Koch are described from the Madrean pine-oak forests of the Sierra Madre Occidental in the state of Durango, Mexico. These species, Vaejovis sierrae sp. nov. and Vaejovis mcwesti sp. nov., are distinguished from each other and the only other species of the mexicanus group known from this mountain range, Vaejovis montanus Graham and Bryson, by morphometrics, carinal development of the pedipalps, granulation of the metasoma, and body size. A key to the species of the mexicanus group from the Sierra Madre Occidental is provided. Key words. Chihuahua, Madrean pine-oak forest, new species, scorpion, taxonomy, mexicanus group Introduction The Sierra Madre Occidental in western Mexico has been poorly sampled for montane scorpions (Sissom 2000; Sissom and Hendrixson 2005). Only three species of montane scorpions in the speciose family Vaejovidae have been documented from the main masiff of the Sierra Madre Occidental despite this mountain chain being the largest in Mexico (Ferrusquía-Villafranca et al. 2005) and geographi- cally proximate to the United States border (Fig. 1). Two of these vaejovid species, Vaejovis montanus Graham and Bryson and Pseudouroctonus chicano (Gertsch and Soleglad), are endemic to the Sierra Madre Occidental and the third, Pseudouroctonus apacheanus (Gertsch and Soleglad), is also distributed across the uplands of the southwestern United States. Surprisingly, no montane vaejovids have been reported from the highlands in the Mexican state of Durango (Sissom and Hendrixson 2005). However, the type locality of V. montanus in Chihuahua is only 40 km from Durango, and it was suggested that additional fi eldwork in Durango would probably turn up more montane species (Graham and Bryson 2010). Furthermore, because of the topographic complexity and biogeographic barriers in the region, it 2 • INSECTA MUNDI 0477, May 2016 SISSOM ET AL. was speculated that these additional species might represent undescribed forms (Graham and Bryson 2010). During fi eldwork in Durango in the summers of 2005 and 2010, two unidentifi ed species of Vaejovis C. L. Koch were collected in the Madrean pine-oak forests of the Sierra Madre Occidental. Both species are referable to the mexicanus group of Vaejovis based on characters listed by Santibáñez-López and Francke (2010), namely six subrows of denticles on the fi xed fi nger of the pedipalp chela, the position of trichobothria ib – it at the base of the fi xed fi nger of the pedipalp chela, and the lack of a sclerotized mating plug in the male spermatophore. Here these two new species are described and compared to V. montanus, the only other montane species of Vaejovis in the mexicanus group from the Sierra Madre Occidental. This brings the total number of montane vaejovids known from the Sierra Madre Occidental to fi ve. Materials and Methods Basic nomenclature follows Hjelle (1990); mensuration follows Sissom et al. (1990); trichobothrial designations are after Vachon (1974); setation nomenclature and conventions are after Haradon (1984) for pedipalpal setae, Sissom et al. (2012) for metasomal setae, and McWest (2009) for leg III setae. Setal count data are based on all available specimens. Measurements