Euphyes dukesi calhouni - Shuey, 1996
Dukes' Skipper
Other English Common Names: Dukes' skipper
Taxonomic Status: Accepted
Related ITIS Name(s): Euphyes dukesi calhouni Shuey, 1996 (TSN 707462)
Unique Identifier: ELEMENT_GLOBAL.2.114180
Element Code: IILEP77052
Informal Taxonomy: Animals, Invertebrates - Insects - Butterflies and Moths - Butterflies and Skippers
 
Kingdom Phylum Class Order Family Genus
Animalia Mandibulata Insecta Lepidoptera Hesperiidae Euphyes
Genus Size: C - Small genus (6-20 species)
Check this box to expand all report sections:
Concept Reference
Help
Concept Reference: Shuey, John A., 1996. Another new Euphyes from the southern United States Coastal Plain (Hesperiidae). Journal of the Lepidopterists' Society 50(1): 46-53.
Concept Reference Code: A96SHU01EHUS
Name Used in Concept Reference: Euphyes dukesi calhouni
Taxonomic Comments: A distinctive subspecies confined, so far as known, to the Florida peninsula, north to Duval County. See the description for how to separate specimens, but with the possible exceptions of southern Georgia and the Florida panhandle locality data alone should identify the subspecies. All known Florida specimens are this subspecies and all others are subspecies DUKESI. No intermediate populations are known, and there may be no recent zone of contact. As its author suggests, this may very well prove to be a distinct species.
Conservation Status
Help

NatureServe Status

Global Status: G3T1
Global Status Last Reviewed: 27Oct2015
Global Status Last Changed: 01Sep1998
Rounded Global Status: T1 - Critically Imperiled
Reasons: Only one population has been documented since 2010.
Nation: United States
National Status: NNR

U.S. & Canada State/Province Status
United States Florida (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent: 250-20,000 square km (about 100-8000 square miles)
Range Extent Comments: Known from at least seven counties in northern Florida peninsula. Note the entire account for the species by Minno (in Deyrup and Franz, 1994) refers to this taxon.

Number of Occurrences: 6 - 20
Number of Occurrences Comments: At the time of its description 17 occurrences were known. However, John Calhoun has told FNAI that most of those sites have not had any sightings or records of this species since the initial sightings.

Number of Occurrences with Good Viability/Integrity: Very few (1-3)
Viability/Integrity Comments: The only post-2010 record for this species is from Big Bend WMA in Taylor County.

Overall Threat Impact Comments: Loss of habitat and probably mosquito spraying.

Short-term Trend: Decline of 10-30%
Short-term Trend Comments: Loss of habitat to urbanization etc.

Other NatureServe Conservation Status Information

Distribution
Help
Global Range: (250-20,000 square km (about 100-8000 square miles)) Known from at least seven counties in northern Florida peninsula. Note the entire account for the species by Minno (in Deyrup and Franz, 1994) refers to this taxon.

U.S. States and Canadian Provinces

Map unavailable!:
Distribution data for U.S. states and Canadian provinces is known to be incomplete or has not been reviewed for this taxon.

U.S. & Canada State/Province Distribution
United States FL

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
FL Brevard (12009), Dixie (12029), Orange (12095), Seminole (12117), Taylor (12123), Volusia (12127)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Upper St. Johns (03080101)+, Econfina-Steinhatchee (03110102)+, Lower Suwannee (03110205)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
Help
General Description: Well illustrated by Minno (in Deyrup and Franz, 1994). See original description also.
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Palustrine Habitat(s): FORESTED WETLAND
Habitat Comments: Sedge patches within swamps, which may be cypress, gum, red maple or mixed canopy.
Adult Food Habits: Nectarivore
Immature Food Habits: Herbivore
Food Comments: Larval foodplants are RYNCHOSPORA INUNDATA, R. MILIACEA, and an unidentified CAREX sp. probably other large congenerics. Adults visit flowers such as buttonbush, pickerel weed etc. The best account is in the original description (Shuey, 1996).
Adult Phenology: Diurnal
Immature Phenology: Hibernates/aestivates
Phenology Comments: Two or three broods from at least May into November. There may be two well separated principal broods in spring and September-October (presumably with larval aestivation) with a few stragglers at odd times. Shuey (1996) gives the dates as 9 May to 16 June and 18 August to 13 October and one in July. Larvae hibernate in about the fourth instar and feed again in spring pupating about two weeks before adults appear.
Economic Attributes Not yet assessed
Help
Management Summary Not yet assessed
Help
Population/Occurrence Delineation Not yet assessed
Help
Population/Occurrence Viability
Help
Justification: Use the Generic Element Occurrence Rank Specifications (2008).
Key for Ranking Species Element Occurrences Using the Generic Approach (2008).
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
Help
Authors/Contributors
Help
NatureServe Conservation Status Factors Edition Date: 04Sep2013
NatureServe Conservation Status Factors Author: Schweitzer, D.F.
Element Ecology & Life History Edition Date: 25Jan2001
Element Ecology & Life History Author(s): SCHWEITZER, D.F.

Zoological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).

References
Help
  • Deyrup, M. and R. Franz. 1994. Rare and Endangered Biota of Florida, Volume IV. Invertebrates. University Press of Florida: Gainesville, Florida. 798 pp.

  • Pelham, J. P. 2008. A catalogue of the butterflies of the United States and Canada with a complete bibliography of the descriptive and systematic literature. The Journal of Research on the Lepidoptera. Volume 40. 658 pp.

  • Shuey, John A., 1996. Another new Euphyes from the southern United States Coastal Plain (Hesperiidae). Journal of the Lepidopterists' Society 50(1): 46-53.

Use Guidelines & Citation

Use Guidelines and Citation

The Small Print: Trademark, Copyright, Citation Guidelines, Restrictions on Use, and Information Disclaimer.

Note: All species and ecological community data presented in NatureServe Explorer at http://explorer.natureserve.org were updated to be current with NatureServe's central databases as of November 2016.
Note: This report was printed on

Trademark Notice: "NatureServe", NatureServe Explorer, The NatureServe logo, and all other names of NatureServe programs referenced herein are trademarks of NatureServe. Any other product or company names mentioned herein are the trademarks of their respective owners.

Copyright Notice: Copyright © 2017 NatureServe, 4600 N. Fairfax Dr., 7th Floor, Arlington Virginia 22203, U.S.A. All Rights Reserved. Each document delivered from this server or web site may contain other proprietary notices and copyright information relating to that document. The following citation should be used in any published materials which reference the web site.

Citation for data on website including State Distribution, Watershed, and Reptile Range maps:
NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed:

Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Bird Range Maps of North America:
"Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE."

Citation for Mammal Range Maps of North America:
Patterson, B.D., G. Ceballos, W. Sechrest, M.F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B.E. Young. 2003. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Mammal Range Maps of North America:
"Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy-Migratory Bird Program, Conservation International-CABS, World Wildlife Fund-US, and Environment Canada-WILDSPACE."

Citation for Amphibian Range Maps of the Western Hemisphere:
IUCN, Conservation International, and NatureServe. 2004. Global Amphibian Assessment. IUCN, Conservation International, and NatureServe, Washington, DC and Arlington, Virginia, USA.

Acknowledgement Statement for Amphibian Range Maps of the Western Hemisphere:
"Data developed as part of the Global Amphibian Assessment and provided by IUCN-World Conservation Union, Conservation International and NatureServe."

NOTE: Full metadata for the Bird Range Maps of North America is available at:
http://www.natureserve.org/library/birdDistributionmapsmetadatav1.pdf.

Full metadata for the Mammal Range Maps of North America is available at:
http://www.natureserve.org/library/mammalsDistributionmetadatav1.pdf.

Restrictions on Use: Permission to use, copy and distribute documents delivered from this server is hereby granted under the following conditions:
  1. The above copyright notice must appear in all copies;
  2. Any use of the documents available from this server must be for informational purposes only and in no instance for commercial purposes;
  3. Some data may be downloaded to files and altered in format for analytical purposes, however the data should still be referenced using the citation above;
  4. No graphics available from this server can be used, copied or distributed separate from the accompanying text. Any rights not expressly granted herein are reserved by NatureServe. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any trademark of NatureServe. No trademark owned by NatureServe may be used in advertising or promotion pertaining to the distribution of documents delivered from this server without specific advance permission from NatureServe. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any NatureServe copyright.
Information Warranty Disclaimer: All documents and related graphics provided by this server and any other documents which are referenced by or linked to this server are provided "as is" without warranty as to the currentness, completeness, or accuracy of any specific data. NatureServe hereby disclaims all warranties and conditions with regard to any documents provided by this server or any other documents which are referenced by or linked to this server, including but not limited to all implied warranties and conditions of merchantibility, fitness for a particular purpose, and non-infringement. NatureServe makes no representations about the suitability of the information delivered from this server or any other documents that are referenced to or linked to this server. In no event shall NatureServe be liable for any special, indirect, incidental, consequential damages, or for damages of any kind arising out of or in connection with the use or performance of information contained in any documents provided by this server or in any other documents which are referenced by or linked to this server, under any theory of liability used. NatureServe may update or make changes to the documents provided by this server at any time without notice; however, NatureServe makes no commitment to update the information contained herein. Since the data in the central databases are continually being updated, it is advisable to refresh data retrieved at least once a year after its receipt. The data provided is for planning, assessment, and informational purposes. Site specific projects or activities should be reviewed for potential environmental impacts with appropriate regulatory agencies. If ground-disturbing activities are proposed on a site, the appropriate state natural heritage program(s) or conservation data center can be contacted for a site-specific review of the project area (see Visit Local Programs).

Feedback Request: NatureServe encourages users to let us know of any errors or significant omissions that you find in the data through (see Contact Us). Your comments will be very valuable in improving the overall quality of our databases for the benefit of all users.