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Endangered and Threatened Wildlife And 28094 Federal Register / Vol. 73, No. 95 / Thursday, May 15, 2008 / Proposed Rules * * * * * means that we will post any personal accept the petitioner’s sources and Dated: May 7, 2008. information you provide us (see the characterizations of the information, to Lyle Laverty, Public Comments Solicited section the extent that they appear to be based below for more information). on accepted scientific principles (such Assistant Secretary for Fish and Wildlife and as citing published and peer reviewed Parks. You may obtain copies of the petition, reports, and reviews of reports upon articles, or studies done in accordance [FR Doc. E8–10887 Filed 5–14–08; 8:45 am] which this 90-day finding is based by with valid methodologies), unless we BILLING CODE 4310–55–C visiting the Federal eRulemaking Portal have specific information to the at http://www.regulations.gov or our contrary. Our finding considers whether the petition states a reasonable case on DEPARTMENT OF THE INTERIOR Web site at http://www.fws.gov/ southwest/es/arizona/, or by contacting its face that delisting may be warranted. Fish and Wildlife Service the Arizona Ecological Services Field Thus, our 90-day finding expresses no Office at the address or contact numbers view as to the ultimate issue of whether 50 CFR Part 17 under ADDRESSES. the species should no longer be FOR FURTHER INFORMATION CONTACT: classified as a threatened species. We [FWS–R2–ES–2008–0037; 92220–1113– make no determinations as to the value, 0000–C5] Steve Spangle, Field Supervisor, U.S. Fish and Wildlife Service, Arizona accuracy, completeness, or veracity of the petition. The contents of this finding Endangered and Threatened Wildlife Ecological Services Field Office; by summarize that information that was and Plants; 90-Day Finding on Petition telephone at 602/242–0210; or by available to us at the time of the petition To Delist the Hualapai Mexican Vole facsimile at 602/242–2513. Persons who review. (Microtus mexicanus hualpaiensis) use a telecommunications device for the deaf (TDD) may call the Federal In making this finding, we relied on information provided by the petitioner AGENCY: Fish and Wildlife Service, Information Relay Service (FIRS) at and information available in our files at Interior. 800–877–8339. the time we reviewed the petition, and ACTION: Notice of 90-day petition SUPPLEMENTARY INFORMATION: finding. we evaluated that information in Background accordance with 50 CFR 424.14(b). Our SUMMARY: process for making a 90-day finding We, the U.S. Fish and Section 4(b)(3)(A) of the Act (16 Wildlife Service (Service), make a 90- under section 4(b)(3)(A) of the Act and U.S.C. 1531 et seq.) requires that we section 424.14(b) of our regulations is day finding on a petition to remove the make a finding on whether a petition to Hualapai Mexican vole (Microtus limited to a determination of whether list, delist, or reclassify a species the information contained in the mexicanus hualpaiensis) from the presents substantial scientific or Federal List of Threatened and petition meets the ‘‘substantial commercial information indicating that information’’ threshold. Endangered Wildlife and Plants the petitioned action may be warranted. pursuant to the Endangered Species Act On August 23, 2004, we received a We are to base this finding on petition dated August 18, 2004, from the (Act). We find that the petition presents information provided in the petition. To substantial information indicating that Arizona Game and Fish Department the maximum extent practicable, we (AGFD 2004) to delist the Hualapai delisting this mammal may be must make this finding within 90 days warranted. We are initiating a status Mexican vole (Microtus mexicanus of receipt of the petition, and publish hualpaiensis). The petition (AGFD 2004, review to determine if delisting this the finding promptly in the Federal subspecies is warranted. We are pp. 4–6) states that: (1) The subspecies Register. occurs over a much greater area and in requesting submission of any Our review of a 90-day finding under information on the Hualapai Mexican higher numbers than previously section 4(b)(3)(A) of the Act and 50 CFR thought; (2) it is likely that all vole relevant to its listing status under 424.14(b) is limited to a determination the Act. Following this review, we will populations referred to as M. m. of whether the information in the hualpaiensis, along with other issue a 12-month finding on the petition meets the ‘‘substantial petition. populations of the species in Arizona, information’’ threshold. ‘‘Substantial should be referred to as M. m. DATES: This finding was made on May information’’ is defined in section mogollonensis; and (3) the threats faced 15, 2008. To be considered in the 12- 424.14(b) of our regulations as ‘‘that by this more widespread taxon do not month finding on this petition, amount of information that would lead indicate that listing under the Act is comments and information should be a reasonable person to believe that the warranted. submitted to us by July 14, 2008. measure proposed in the petition may ADDRESSES: You may submit written be warranted.’’ Petitioners need not Species Information comments and materials to us by one of prove that the petitioned action is The Mexican vole is a cinnamon- the following methods: warranted to support a ‘‘substantial’’ brown, mouse-sized rodent • Federal eRulemaking Portal: http:// finding; instead, the key consideration approximately 5.5 inches (14 cm) long www.regulations.gov. Follow the in evaluating a petition for with a short tail and small ears that are instructions for submitting comments. substantiality involves demonstration of obscured by its fur (Hoffmeister 1986, p. • U.S. mail or hand-delivery: Public the reliability and adequacy of the 441; 52 FR 36776, October 1, 1987). Comments Processing, Attn: Docket information supporting the action Goldman (1938, pp. 493–494) FWS–R2–ES–2008–0037, Division of advocated by the petition. described and named the Hualapai Policy and Directives Management, U.S. We have to satisfy the Act’s Mexican vole (also known as the Fish and Wildlife Service, 4401 N. requirement that we use the best Hualapai vole) as Microtus mexicanus Fairfax Drive, Suite 222, Arlington, VA available science to make our decisions. hualapaiensis in 1938. This was based 22203. However, we do not conduct additional on only four specimens, but Cockrum We will not accept e-mail or faxes. We research at this point, nor do we subject (1960, p. 210), Hall (1981, p. 481), and will post all comments on http:// the petition to rigorous critical review. Hoffmeister (1986, pp. 444–445) all www.regulations.gov. This generally Rather, at the 90-day finding stage, we recognized the subspecies. M. m. VerDate Aug<31>2005 16:04 May 14, 2008 Jkt 214001 PO 00000 Frm 00035 Fmt 4702 Sfmt 4702 E:\FR\FM\15MYP1.SGM 15MYP1 yshivers on PROD1PC62 with PROPOSALS Federal Register / Vol. 73, No. 95 / Thursday, May 15, 2008 / Proposed Rules 28095 hualpaiensis has been considered one of below. Researchers did not collect or (Watson Woods and Navajo Mountain). three subspecies of M. mexicanus found analyze samples from the exact same The petition states that their results did in Arizona (Kime et al. 1995, p. 1). It locations, so site names across studies not support separation of M. mexicanus was distinguished from M. m. navaho to do not necessarily match. We have in Arizona into three distinct the northeast by a slightly longer body, presented site names and resulting subspecies. Populations assigned to M. longer tail, and longer and broader skull population assignments as described in m. navajo from Navajo Mountain, (Hoffmeister 1986, p. 443). It was the petition and studies cited in the Mingus Mountain, San Francisco Peaks, distinguished from M. m. mogollonensis petition. and the Grand Canyon South Rim, and by a longer body, shorter tail, and a As a point of clarification, Frey and populations assigned to M. m. longer and narrower skull (Hoffmeister LaRue (1993, p. 176) asserted that mogollonensis from the Mogollon Rim, 1986, p. 443). Mexican voles from Mexico are distinct Chuska Mountains, and White The final rule listing M. m. from populations in the United States Mountains were not differentiated from hualpaiensis (52 FR 36776) indicated based on genetic and morphologic data. those from the Hualapai Mountains, that this subspecies occupied the They assigned voles in Arizona, New Hualapai Indian Reservation, Aubrey Hualapai Mountains, but also Mexico, and Texas that were formerly Cliffs, Bradshaw Mountains, Watson acknowledged that Spicer et al. (1985, named M. mexicanus to M. Woods, and Sierra Prieta (AGFD 2004, p. 10) noted similar voles from the mogollonensis (Frey and LaRue 1993, p. 3; Busch et al. 2001, p. 2). The Music Mountains and that Hoffmeister pp. 176–177). Because the Service did petition states that the authors believed (1986, p. 445) had tentatively assigned not formally change the scientific name the specimens from the White specimens from Prospect Valley to M. of the Hualapai Mexican vole, we Mountains and Chuska Mountains m. hualpaiensis. The rule stated that if continue to use the name M. mexicanus could be considered a different future taxonomic evaluation of voles in this finding. subspecies, or they may simply show from the Music Mountains and Prospect The petition states that in 1993, Frey some genetic difference due to Valley should indicate that they are M. and Yates conducted a genetic analysis geographic separation (AGFD 2004, p. 3; m. hualpaiensis, the voles from the on tissue samples from 12 populations Busch et al. 2001, p. 11–12). According Music Mountains and Prospect Valley (AGFD 2004, p. 2); there was an to Busch et al.
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