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Proposed Rule

Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Southern Hognose Snake

Proposed rule.

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Summary:

We, the U.S. Fish and Wildlife Service (Service), propose to list the southern hognose snake (Heterodon simus), a small, fossorial snake species from the coastal plains and sandhills across the southeastern United States, as a threatened species under the Endangered Species Act of 1973, as amended (Act). This determination also serves as our 12-month finding on a petition to list the southern hognose snake. After a review of the best scientific and commercial data available, we find that listing the species is warranted. Accordingly, we propose to list the southern hognose snake as a threatened species with protective regulations under section 4(d) of the Act ("4(d) rule"). If we finalize this rule as proposed, it would add this species to the List of Endangered and Threatened Wildlife and extend the Act's protections to the species. We find that designating critical habitat for this species is prudent but not determinable at this time.

Key Dates
Citation: 90 FR 42151
Comments must be received by October 28, 2025. Comments submitted electronically using the Federal eRulemaking Portal (see ADDRESSES, below) must be received by 11:59 p.m. eastern time on the closing date. We must receive requests for a public hearing, in writing, at the address shown in FOR FURTHER INFORMATION CONTACT by October 14, 2025.
Comments closed: October 28, 2025
Public Participation
216 comments 7 supporting docs
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Topics:
Endangered and threatened species Exports Imports Plants Reporting and recordkeeping requirements Transportation Wildlife

📋 Rulemaking Status

This is a proposed rule. A final rule may be issued after the comment period and agency review.

Document Details

Document Number2025-16688
FR Citation90 FR 42151
TypeProposed Rule
PublishedAug 29, 2025
Effective Date-
RIN1018-BI23
Docket IDDocket No. FWS-R4-ES-2025-0210
Pages42151–42178 (28 pages)
Text FetchedYes

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Full Document Text (23,740 words · ~119 min read)

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DEPARTMENT OF THE INTERIOR <SUBAGY>Fish and Wildlife Service</SUBAGY> <CFR>50 CFR Part 17</CFR> <DEPDOC>[Docket No. FWS-R4-ES-2025-0210; FXES1111090FEDR-256-FF09E21000]</DEPDOC> <RIN>RIN 1018-BI23</RIN> <SUBJECT>Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Southern Hognose Snake</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Fish and Wildlife Service, Interior. <HD SOURCE="HED">ACTION:</HD> Proposed rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> We, the U.S. Fish and Wildlife Service (Service), propose to list the southern hognose snake ( <E T="03">Heterodon simus</E> ), a small, fossorial snake species from the coastal plains and sandhills across the southeastern United States, as a threatened species under the Endangered Species Act of 1973, as amended (Act). This determination also serves as our 12-month finding on a petition to list the southern hognose snake. After a review of the best scientific and commercial data available, we find that listing the species is warranted. Accordingly, we propose to list the southern hognose snake as a threatened species with protective regulations under section 4(d) of the Act (“4(d) rule”). If we finalize this rule as proposed, it would add this species to the List of Endangered and Threatened Wildlife and extend the Act's protections to the species. We find that designating critical habitat for this species is prudent but not determinable at this time. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> Comments must be received by October 28, 2025. Comments submitted electronically using the Federal eRulemaking Portal (see <E T="02">ADDRESSES</E> , below) must be received by 11:59 p.m. eastern time on the closing date. We must receive requests for a public hearing, in writing, at the address shown in <E T="02">FOR FURTHER INFORMATION CONTACT</E> by October 14, 2025. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> <E T="03">Comment submission:</E> You may submit comments by one of the following methods: (1) <E T="03">Electronically:</E> Go to the Federal eRulemaking Portal: <E T="03">https://www.regulations.gov.</E> In the Search box, enter FWS-R4-ES-2025-0210, which is the docket number for this rulemaking. Then, click on the Search button. On the resulting page, in the panel on the left side of the screen, under the Document Type heading, check the Proposed Rule box to locate this document. You may submit a comment by clicking on “Comment.” (2) <E T="03">By hard copy:</E> Submit by U.S. mail to: Public Comments Processing, Attn: FWS-R4-ES-2025-0210, U.S. Fish and Wildlife Service, MS: PRB/3W, 5275 Leesburg Pike, Falls Church, VA 22041-3803. We request that you send comments only by the methods described above. We will post all comments on <E T="03">https://www.regulations.gov.</E> This generally means that we will post any personal information you provide us (see Information Requested, below, for more information). <E T="03">Availability of supporting materials:</E> Supporting materials, such as the species status assessment report, are available at <E T="03">https://www.regulations.gov</E> at Docket No. FWS-R4-ES-2025-0210 and at <E T="03">https://ecos.fws.gov/ecp/species/3248.</E> <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> Christy Johnson-Hughes, Field Supervisor, U.S. Fish and Wildlife Service, South Carolina Ecological Services Field Office; 843-727-4707; <E T="03">christy_johnsonhughes@fws.gov.</E> Individuals in the United States who are deaf, deafblind, hard of hearing, or have a speech disability may dial 711 (TTY, TDD, or TeleBraille) to access telecommunications relay services. Individuals outside the United States should use the relay services offered within their country to make international calls to the point-of-contact in the United States. Please see Docket No. FWS-R4-ES-2025-0210 on <E T="03">https://www.regulations.gov</E> for a document that summarizes this proposed rule. </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">Executive Summary</HD> <E T="03">Why we need to publish a rule.</E> Under the Act, a species warrants listing if it meets the definition of an endangered species (in danger of extinction throughout all or a significant portion of its range) or a threatened species (likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range). If we determine that a species warrants listing, we must list the species promptly and designate the species' critical habitat to the maximum extent prudent and determinable. We have determined that the southern hognose snake meets the Act's definition of a threatened species; therefore, we are proposing to list it as such. Listing a species as an endangered or threatened species can be completed only by issuing a rule through the Administrative Procedure Act rulemaking process (5 U.S.C. 551 <E T="03">et seq.</E> ). <E T="03">What this document does.</E> We propose to list the southern hognose snake as a threatened species with protective regulations under section 4(d) of the Act. <E T="03">The basis for our action.</E> Under the Act, we may determine that a species is an endangered or threatened species because of any of five factors: (A) the present or threatened destruction, modification, or curtailment of its habitat or range; (B) overutilization for commercial, recreational, scientific, or educational purposes; (C) disease or predation; (D) the inadequacy of existing regulatory mechanisms; or (E) other natural or manmade factors affecting its continued existence. We have determined that the southern hognose snake meets the Act's definition of a threatened species due to the following threats: under Factor A, habitat loss, conversion, and fragmentation (due to conversion for agriculture, silviculture, and development); and under Factor E, road mortality, effects of small population size, invasive species, and effects of increased temperatures, decreased precipitation, increased severe weather such as drought, flooding, or storms, resulting in changes in wildfire frequency and intensity, decreased ability to conduct prescribed burns, and sea level rise. Section 4(a)(3) of the Act requires that the Secretary of the Interior (Secretary), to the maximum extent prudent and determinable, concurrently with listing designate critical habitat for the species. Section 3(5)(A) of the Act defines critical habitat as (i) the specific areas within the geographical area occupied by the species, at the time it is listed, on which are found those physical or biological features (I) essential to the conservation of the species and (II) which may require special management considerations or protections; and (ii) specific areas outside the geographical area occupied by the species at the time it is listed, upon a determination by the Secretary that such areas are essential for the conservation of the species. Section 4(b)(2) of the Act states that the Secretary must make the designation on the basis of the best scientific data available and after taking into consideration the economic impact, the impact on national security, and any other relevant impacts of specifying any particular area as critical habitat. We have determined that critical habitat is not determinable at this time for the southern hognose snake. The Act allows the Service an additional year to publish a critical habitat designation that is not determinable at the time of listing (16 U.S.C. 1533(b)(6)(C)(ii)). <HD SOURCE="HD1">Information Requested</HD> We intend that any final action resulting from this proposed rule will be based on the best scientific and commercial data available and be as accurate and as effective as possible. Therefore, we request comments or information from other governmental agencies, Native American Tribes, the scientific community, industry, or any other interested parties concerning this proposed rule. We particularly seek comments concerning: (1) The species' biology, range, and population trends, including: (a) Biological or ecological requirements of the species, including habitat requirements for feeding, breeding, and sheltering; (b) Genetics and taxonomy; (c) Historical and current range, including distribution patterns and the locations of any additional populations of this species; (d) Historical and current population levels, and current and projected trends; and (e) Past and ongoing conservation measures for the species, its habitat, or both. (2) Threats and conservation actions affecting the species, including: (a) Factors that may be affecting the continued existence of the species, which may include habitat modification or destruction, overutilization, disease, predation, the inadequacy of existing regulatory mechanisms, or other natural or manmade factors; (b) Biological, commercial trade, or other relevant data concerning any threats (or lack thereof) to this species; and (c) Existing regulations or conservation actions that may be addressing threats to this species. (3) Additional information concerning the historical and current status of this species. (4) Information to assist us with applying or issuing protective regulations under section 4(d) of the Act that may be necessary and advisable to provide for the conservation of the southern hognose snake. In particular, we seek information concerning: (a) The extent to which we should include any of the Act's section 9 prohibitions in the 4(d) rule; (b) Whether we should consider any additional or different exceptions from the prohibitions in the 4(d) rule; (c) Impacts (conservation and economic) associated with implementing the 4(d) rule; (d) How frequently and in what geographical areas are activities that we propose to regulate unde ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 161k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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