Attributes of Agathymus alliae

Mojave Giant-Skipper
Agathymus alliae (D. Stallings & Turner, 1957)

Family: Hesperiidae
Subfamily: Megathyminae
Identification: Large and robust. Upperside is black with reddish orange at the wing bases and costa. Orange-yellow forewing spots are widely separated in males but in females are separated only by veins, forming an almost continuous band. Underside of hindwing is mottled gray with bands of yellow-orange spots.
Wing Span: 2 1/4 - 2 1/2 inches (5.7 - 6.4 cm).
Life History: From early morning to noon males perch near host plants to wait for receptive females. Females lay eggs singly on the host and fall to the base of the plant. A young caterpillar crawls to a leaf tip and burrows inside where it eats pulp and then hibernates. In the spring the caterpillar makes a new burrow in a leaf base where it feeds on sap until becoming inactive for the summer. Before pupating, the caterpillar enlarges the opening of its burrow and makes a silk trap door from which the adult can emerge.
Flight: One brood from August-October.
Caterpillar Hosts: Utah agave (Agave utahensis).
Adult Food: Females do not feed; males sip moisture from mud.
Habitat: Desert and open pine-woodland canyons.
Range: East-central California, southern Nevada, southern Utah, and northwestern Arizona.
Conservation: Populations and their habitats should be conserved wherever found.
NCGR: G3 - Very rare or local throughout its range or found locally in a restricted range (21 to 100 occurrences). (Threatened throughout its range).
Management Needs: Preserve habitat and discourage overgrazing.
Taxonomy Notes:

Images of Agathymus alliae

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Agathymus alliae - AalliaeNGrishin.jpg

Agathymus alliae - AalliaeNGrishin.jpg

The map below displays all BAMONA data for this species and has three different data layers:
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Observation Date Submitter Region Verified Datesort icon
August 31, 1988 legacy.reporter (Pat Savage) Clark County, Nevada, United States December 01, 2012 Details
September 28, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States January 01, 2012 Details
September 30, 1979 legacy.reporter (George T. Austin) Clark County, Nevada, United States January 01, 2012 Details
October 10, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States January 01, 2012 Details
November 02, 1977 legacy.reporter (George T. Austin) Clark County, Nevada, United States January 01, 2012 Details
October 11, 1978 legacy.reporter (George T. Austin) Clark County, Nevada, United States January 01, 2012 Details
October 10, 1992 Ken Davenport (Ken Davenport) Clark County, Nevada, United States May 01, 2011 Details
October 11, 1992 Ken Davenport (Ken Davenport) Clark County, Nevada, United States May 01, 2011 Details
October 07, 1993 Ken Davenport (Ken Davenport) Clark County, Nevada, United States May 01, 2011 Details
October 08, 1993 Ken Davenport (Ken Davenport) Clark County, Nevada, United States May 01, 2011 Details
October 03, 1953 legacy.reporter (Stallings & Turner) Coconino County, Arizona, United States January 01, 2011 Details
September 16, 1954 legacy.reporter (Stallings & Turner) Coconino County, Arizona, United States January 01, 2011 Details
September 05, 1991 legacy.reporter (unknown) San Bernardino County, California, United States December 31, 2010 Details
January 01, 1950 legacy.reporter (Kilian Roever) Inyo County, California, United States January 07, 2010 Details
January 01, 1950 legacy.reporter (Oakley Shields) Inyo County, California, United States January 07, 2010 Details
January 01, 1950 legacy.reporter (Kilian Roever) San Bernardino County, California, United States January 07, 2010 Details
January 01, 1950 legacy.reporter (Kilian Roever) San Bernardino County, California, United States January 07, 2010 Details
September 08, 1973 legacy.reporter (John F. Emmel) San Bernardino County, California, United States January 06, 2010 Details
October 05, 1969 legacy.reporter (Bruce Griffin) San Bernardino County, California, United States August 07, 2009 Details
September 12, 1969 legacy.reporter (Bruce Griffin) San Bernardino County, California, United States August 07, 2009 Details
September 15, 1992 legacy.reporter (Richard P. Meyer) San Bernardino County, California, United States August 07, 2009 Details
January 01, 1950 legacy.reporter Mohave County, Arizona, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Coconino County, Arizona, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Coconino County, Arizona, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Maricopa County, Arizona, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Mohave County, Arizona, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Inyo County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter San Bernardino County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Lincoln County, Nevada, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Clark County, Nevada, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Clark County, Nevada, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Washington County, Utah, United States December 31, 2004 Details