Megathymus

Megathymus Scudder, 1872

Megathymus Scudder, 1872; 4th Ann. Rep. Peabody Acad. Sci. (1871): 83 (62); TS: Eudamus yuccae Boisduval & Le Conte

Megathimus; Madariaga, 1931, (missp.); [NHM-BMW]
Megathymus; [P&N23]; [LepIndex]; [CoL] ; [iNaturalist] ; [NHM-BMW]
Megathymus (Hesperiinae); [Opler]
Megathymus (Megathyminae); Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 5
Megathymus (Megathymini); [NL4A], 86
Methymus; Forbes, 1906, (missp.); [NHM-BMW]
Mgathymus; Stallings & Turner, 1958, (missp.); [NHM-BMW]

Megathymus yuccae (Boisduval & Le Conte, [1834]) -. See [maps] Yucca Giant Skipper
- Eudamus yuccae Boisduval & Le Conte, [1834]; Hist. Lép. Am. Sept. (23-26): pl. 70; TL: Aiken Co., South Carolina [neotype, Freeman, 1952]
- Megathymus yuccae; Dyar, 1903, Bull. U.S. nat. Mus. 52: 46; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 8; [NACL], #4145; [NAB], 851; [BOW]: pl. 22, f. 17; [Opler]; [NL4A], #2362; [MPG] ; [P&N23]; [LepIndex] ; [CoL] ; [iNaturalist] ; [BOA] ; [BAMONA] ; [GALEPS]
Larva on Yucca , (except Y. whipplei) [NAB]
- M. y. yuccae North Carolina, South Carolina, NA.Georgia, Alabama, Florida, Louisiana
  - Megathymus yuccae alabamae Freeman, 1943; Ent. News 54 (9): (211-217) ; TL: Anniston, [Calhoun Co.], Alabama
    
    = ; Freeman, 1952, #REF#a: 29; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 9
  - Megathymus yuccae yuccae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 9; [P&N23]; [BOA]
  - Megathymus yuccae; Scudder, 1872, 4th Ann. Rep. Peabody Acad. Sci. (1871): 83
  Larva on Yucca filamentosa, Y. smalliana, Y. flaccida Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 9
- M. y. buchholzi Freeman, 1952 Florida
  - Megathymus yuccae buchholzi Freeman, 1952; Field & Lab. 20 (1): 31; TL: Jupiter, Palm Beach Co., Florida
  - Megathymus yuccae buchholzi; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 9; [NACL], #4145a
  Larva on Yucca smalliana, Y. aloifoia Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 10
- M. y. arizonae Tinkham, 1954 Mexico, Arizona
  - Megathymus yuccae arizonae Tinkham, 1954; Bull. So. Calif. Acad. Sci. 53: 81, pl. 2; TL: Mountain View, Pima Co., Arizona
  - Megathymus coloradensis arizonae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 19; [NACL], #4146h; [LepIndex]; [CoL]
  - Megathymus yuccae arizonae; [NL4A], #2362a; [iNaturalist]
  Larva on Yucca thornberyi, Y. elata Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 19
- M. y. coloradensis Riley, 1877 Colorado, Kansas, Oklahoma, Texas, New Mexico Colorado Giant Skipper
  - Megathymus coloradensis Riley, 1877; Trans. Acad. Sci. St. Louis, 3: 568; TL: nr Colorado Springs, Colorado
  - Megathymus coloradensis coloradensis; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 13
  - Megathymus coloradensis; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 10; [NACL], #4146; [NAB], 852 (note); [LepIndex] ; [CoL]
  - Megathymus yuccae coloradensis; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca glauca Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 13
- M. y. elidaensis Stallings, Turner & Stallings, 1966
  - Megathymus yuccae elidaensis Stallings, Turner & Stallings, 1966; J. Lep. Soc. 20: 170; TL: SW of Elida, Roosevel Co., New Mexico
  - Megathymus coloradensis elidaensis; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 14; [NACL], #4146a
  Larva on Yucca intermedia var. ramosa Stallings, Turner & Stallings, 1966, J. Lep. Soc. 20: 171, Yucca glauca Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 14
- M. y. navajo Skinner, 1911 New Mexico, Colorado, Arizona, Nevada, California
  - Megathymus yuccae navajo Skinner, 1911; Ent. News 22 (7): 300; TL: Ft. Wingate, Zuni Mountains, McKinley Co., New Mexico
  - Megathymus coloradensis navajo; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 14; [NACL], #4146b
  - Megathymus yuccae navajo; [NL4A], #2362e; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca baccata, Y. baileyi, Y. schidigera Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 15
- M. y. browni Stallings & Turner, 1960
  - Megathymus yuccae browni Stallings & Turner, 1960; Ent. News 71 (5): 112; TL: Salina, Sevier Co., Utah
  - Megathymus coloradensis browni; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 15; [NACL], #4146c
  Larva on Yucca harrimaniae Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 15
- M. y. stallingsi Freeman, 1943 Kansas, Oklahoma, Texas
  - Megathymus yuccae stallingsi Freeman, 1943; Ent. News 54 (9): 214; TL: Caldwell, Summer Co., Kansas
  - Megathymus yuccae stallingsi f. dee Freeman, 1943; Ent. News 54 (9): 216; TL: Caldwell, Sumner Co., Kansas
  - Megathymus coloradensis stallingsi; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 16; [NACL], #4146d
  Larva on Yucca arkansana, Y. pallida Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 16
- M. y. reinthali Freeman, 1963 Texas
  - Megathymus yuccae reinthali Freeman, 1963; J. Lep. Soc. 17 (2): 91; TL: two miles W of Ben Wheeler, Van Zandt Co., Texas
  - Megathymus coloradensis reinthali; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 16; [NACL], #4146e; [LepIndex]; [CoL]
  - Megathymus yuccae reinthali; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca louisianensis, Y. freemanii Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 16
- M. y. martini Stallings & Turner, 1956 Mexico, California (W.Mojave Desert)
  - Megathymus yuccae martini Stallings & Turner, 1956; Bull. So. Calif. Acad. Sci., 55: 150, pl. 3; TL: Little Rock, Los Angeles Co., California
  - Megathymus coloradensis martini; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 17; [NACL], #4146f; [LepIndex]; [CoL]
  - Megathymus yuccae martini; [NL4A], #2362d; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca brevifolia, Yucca schidigera Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 17
- M. y. maudae Stallings, Turner & Stallings, 1966 California (E.Mojave Desert)
  - Megathymus yuccae maudae Stallings, Turner & Stallings, 1966; J. Lep. Soc. 20: 169; TL: Providence Mts, San Bernardino Co., California
  - Megathymus coloradensis maudae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 18; [NACL], #4146g
  Larva on Yucca schidigera Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 18
- M. y. albasuffusus R., J. & D. Wielgus, 1974
  - Megathymus coloradensis albasuffusus R., J. & D. Wielgus, 1974
  - Megathymus coloradensis albasuffusa;
  - Megathymus coloradensis albasuffusus; [NACL], #4146i
- M. y. reubeni Stallings, Turner & Stallings, 1963 Mexico, Texas
  - Megathymus yuccae reubeni Stallings, Turner & Stallings, 1963; J. Lep. Soc. 17: 87; TL: Hueco Mts, El Paso Co., Texas
  - Megathymus coloradensis reubeni; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 19; [NACL], #4146j; [LepIndex]; [CoL]
  - Megathymus yuccae reubeni; [NL4A], #2362f; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca baccata, Y. elata Stallings, Turner & Stallings, 1963, J. Lep. Soc. 17: 87
- M. y. winkensis Freeman, 1965 Texas
  - Megathymus yuccae winkensis Freeman, 1965; J. Lep. Soc. 19 (2): 87; TL: Wink, Winkler Co., Texas
  - Megathymus coloradensis winkensis; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 20; [NACL], #4146k
  Larva on Yucca campestris Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 20
- M. y. wilsonorum Stallings & Turner, 1958 Mexico
  - Megathymus yuccae wilsonorum Stallings & Turner, 1958; Lepid. News 11 (4-5): 129; TL: Victoria, Tamaulipas, Mexico
  - Megathymus coloradensis wilsonorum; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 21; [NACL], #4146l; [LepIndex]; [CoL]
  - Megathymus yuccae wilsonorum; [NL4A], #2362g; [P&N23]; [iNaturalist] ; [BOA]
  Larva on Yucca treculeana, Y. carnerosana Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 22
- M. y. louiseae Freeman, 1963 W.Texas, N.Mexico
  - Megathymus yuccae louiseae Freeman, 1963; J. Lep. Soc. 17 (2): 95; TL: 16 miles N of Del Rio [Val Verde Co.], Texas
  - Megathymus coloradensis louiseae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 22; [NACL], #4146m
  - Megathymus yuccae louiseae; [NL4A], #2362c; [P&N23]; [iNaturalist] ; [BOA]
- M. y. kendalli Freeman, 1965 Texas
  - Megathymus yuccae kendalli Freeman, 1965; J. Lep. Soc. 19 (2): 83; TL: San Antonio, Bexar Co., Texas
  - Megathymus coloradensis kendalli; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 22; [NACL], #4146n
  Larva on Yucca constricta, Y. rupicola, Y. pallida, Y. necopina, Y. treculeana Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 22
- M. y. harbisoni Emmel & Emmel, 1998 California
  - Megathymus yuccae harbisoni Emmel & Emmel, 1998; ; TL: California
  - Megathymus yuccae harbisoni; [NL4A], #2362b; [P&N23]; [iNaturalist] ; [BOA]
Megathymus cofaqui (Strecker, 1876) Florida, NA.Georgia. See [maps] Cofaqui Giant Skipper
- Aegiale cofaqui Strecker, 1876; Proc. Acad. Nat. Sci. Philad. 28: 148; TL: Boca Grande, Lee Co., Florida
- Megathymus harrisi Freeman, 1955; Amer. Mus. Novit. 1711: 2; TL: Stone Mountain [Dekalb Co.], Georgia
  - = ; Gatrelle, 1999, Taxonomic Rep. 1 (4): (1-6)
- Megathymus cofaqui cofaqui; [P&N23]
- Megathymus cofaqui slotteni; [P&N23]
- Megathymus cofaqui; Dyar, 1903, Bull. U.S. nat. Mus. 52: 46; Skinner, 1891, List Lepid. Boreal Amer.: 17; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 23; [NACL], #4147; [NAB], 852; [BOW]: pl. 22, f. 13; [Opler]; [MPG] ; [P&N23]; [LepIndex] ; [CoL] ; [iNaturalist] ; [BOA] ; [BAMONA] ; [GALEPS]
- Megathymus harrisi; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 23; [NACL], #4148; [LepIndex] ; [CoL]
Larva on (as harrisi) Yucca filamentosa Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 23, Yucca aliofolia Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 23
Megathymus streckeri (Skinner, 1895) Colorado, New Mexico, Arizona. See [maps] Strecker's Giant Skipper
- Aegiale streckeri Skinner, 1895; Can. Ent. 27 (7): 179; TL: Petrified Forest, Apache Co., Arizona
- Megathymus streckeri streckeri; [NL4A], #2359a; [P&N23]; [BOA]
- Megathymus streckeri; Dyar, 1903, Bull. U.S. nat. Mus. 52: 46; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 23; [NACL], #4149; [NAB], 853; [BOW]: pl. 22, f. 15; [Opler]; [NL4A], #2359; [MPG] ; [P&N23]; [LepIndex] ; [CoL] ; [iNaturalist] ; [BOA] ; [BOA] ; [BAMONA]
Larva on Yucca baileyi, Y. angustissima, Y. glauca, Y. constricta Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1)
Megathymus texanus Barnes & McDunnough, 1912 -. See [maps]
- Megathymus streckeri texanus Barnes & McDunnough, 1912; Contr. nat. Hist. Lepid. N. Am. 1 (3): 39, pl. 2, f. 9; TL: Kerrville, Kerr Co., Texas
- Megathymus streckeri texana; [P&N23]; [LepIndex]; [CoL] ; [iNaturalist]
- Megathymus texanus; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24; [NACL], #4150
- M. t. texanus Texas, New Mexico, SE.Colorado
  - Megathymus albocincta Holland, 1930; Ann. Carnegie Mus. 19 (3): 159
    
    = Megathymus texana; Freeman, 1944, Ent. News. 55: 105
  - Megathymus texana; Freeman, 1944, Ent. News. 55: 105
  - Megathymus texana f. albocincta;
  - Megathymus texanus texanus; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24
  Larva on Yucca glauca Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24
- M. t. leussleri Holland, 1931 Nebraska, South Dakota
  - Megathymus leussleri Holland, 1931; Ann. Carnegie Mus. 20 (2): 262
    
    = Megathymus texana; Freeman, 1944, Ent. News. 55: 104
  - Megathymus leussleri; [BOW]: pl. 22, f. 17 (text)
  - Megathymus streckeri leussleri; [P&N23]; [LepIndex]; [CoL] ; [iNaturalist]
  - Megathymus texanus leussleri; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24; [NACL], #4150
  Larva on Yucca glauca Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24
Megathymus ursus Poling, 1902 Arizona, New Mexico, Texas, Mexico. See [maps] Ursine Giant Skipper
- Megathymus ursus Poling, 1902; Ent. News. 13 (4): 97; TL: Santa Catalina Mts, W of Redington, Pima Co., Arizona
- Megathymus ursus; Dyar, 1903, Bull. U.S. nat. Mus. 52: 47; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 24; [NACL], #4151; [NAB], 852 (note); [Opler]; [NL4A], #2360; [MPG] ; [P&N23]; [LepIndex] ; [CoL] ; [iNaturalist] ; [BOA] ; [BAMONA]
Larva on Yucca schottii Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25
- M. u. ursus Mexico
  - Megathymus ursus ursus; [P&N23]; [iNaturalist] ; [BOA]
- M. u. deserti Wielgus, Wielgus & Wielgus, 1972
  - Megathymus ursus deserti Wielgus, Wielgus & Wielgus, 1972; Bull. Allyn Mus. 9: 1; TL: Arizona, Maricopa Co.
  - Megathymus ursus deserti; [NACL], #4151b; [P&N23]; [LepIndex]; [CoL] ; [iNaturalist] ; [BOA]
  Larva on Yucca baccata Wielgus, Wielgus & Wielgus in Wielgus & Wielgus, 1972, Bull. Allyn Mus. 9: 4
Megathymus violae Stallings & Turner, 1956 Mexico, New Mexico, Texas. See [maps]
- Megathymus violae Stallings & Turner, 1956; Lepid. News 10 (1-2): 4; TL: Carlsbad Caverns National Park, Eddy Co., New Mexico
- Megathymus ursus violae; [NACL], #4151a; [LepIndex]; [CoL]
- Megathymus violae; [NL4A], #2361; Zhang, Cong, Shen, Opler & Grishin, 2020, Taxonomic Rep. 8 (7): 31; [MPG] ; [P&N23]; [iNaturalist] ; [BOA]
- Megathymys violae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25
Larva on Yucca torreyi Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25
Megathymus beulahae Stallings & Turner, 1958 -. See [maps]
- Megathymus beulahae Stallings & Turner, 1958; Lepid. News 11 (4-5): 121; TL: nr ixmiquilpan, Hidalgo, highway 85, klm 176, Mexico
- Megathymus beulahae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25; [NL4A], #2358; [iNaturalist] ; [BOA] ; [BAMONA]
Larva on Agave striata Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25
- M. b. beulahae Mexico
  - Megathymus beulahae beulahae; [NL4A], #2358a; [iNaturalist] ; [BOA]
- M. b. gayleae Stallings, Turner & Stallings, 1963 N.Mexico
  - Megathymus gayleae Stallings, Turner & Stallings, 1963; J. Lep. Soc. 17: 81, pl. 1; TL: 23km north Saltillo, Coahuila, Mexico, marker 903
  - Megathymus beulahae gayleae; [NL4A], #2358b; [iNaturalist] ; [BOA]
  - Megathymus gayleae; Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 25; [LepIndex] ; [CoL]
  Larva on Agave falcata Freeman, 1969, J. Lep. Soc. 23 (Suppl. 1): 26

Unmatched external taxa

Megathymus bazelae; [LepIndex] ; [CoL]
Megathymus beulabae; [LepIndex] ; [CoL]
Megathymus cofaqui cofaqui; [BOA]
Megathymus cofaqui slotteni; [BOA]
Megathymus streckeri leussleri; [BOA]
Megathymus streckeri texana; [BOA]

26.3.2023 (7)

References:

[BAMONA] Opler, Pavulaan, Stanford & Pogue
Butterflies and Moths of North America; Mountain Prairie Information Node
[BOA] Interactive Listing of American Butterflies
Listado Interactivo de la Mariposas Americanas; Butterflies of America
[CoL] Catalogue of Life
Bánki, O., Roskov, Y., Döring, M., Ower, G., Hernández Robles, D. R., Plata Corredor, C. A., Stjernegaard Jeppesen, T., Örn, A., Vandepitte, L., Hobern, D., Schalk, P., DeWalt, R. E., Ma, K., Miller, J., Orrell, T., Aalbu, R., Abbott, J., Adlard, R., Aedo, C., et al. (2024). Catalogue of Life Checklist (Version 2024-03-26); https://doi.org/10.48580/dfz8d
[GALEPS] Moths and Butterflies of Georgia and the Southeastern United States
James K. Adams; Dept. of Natural Science, Dalton State College, Dalton, GA ; http://www.daltonstate.edu/galeps/index.htm
[JLS]
Journal of the Lepidopterists' Society; the original J. Lep. Soc. articles
[LAMAS-NEO] Gerardo Lamas
Bibliography of butterflies; An Annocated Bibliography of the Neotropical Butterflies and Skipper (Lepididoptera: Papilionoidea and Hesperioidea); Revised Electronic Edition (2007)
[LepIndex] Global Lepidoptera Index
Beccaloni, G., Scoble, M., Kitching, I., Simonsen, T., Robinson, G., Pitkin, B., Hine, A., Lyal, C., Ollerenshaw, J., Wing, P., & Hobern, D. (2024). Global Lepidoptera Index. In O. Bánki, Y. Roskov, M. Döring, G. Ower, D. R. Hernández Robles, C. A. Plata Corredor, T. Stjernegaard Jeppesen, A. Örn, L. Vandepitte, D. Hobern, P. Schalk, R. E. DeWalt, K. Ma, J. Miller, T. Orrell, R. Aalbu, J. Abbott, R. Adlard, C. Aedo, et al., Catalogue of Life Checklist (1.1.24.106); https://doi.org/10.48580/dg4lg-49xk
[MPG]
North American Moth Photographers Group
[NHM-BMW] Natural History Museum
Butterflies and Moths of the World; Generic Names and their Type-species
[Opler] Opler & Warren, 2003
Butterflies of North America. 2. Scientific Names List for Butterfly Species of North America, north of Mexico.
[P&N23] Pohl & Nanz, 2023
Annotated Taxonomic Checklist of the Lepidoptera of North America, north of Mexico
[ZOBODAT] Oberösterreichische Landesmuseum
OÖ. Landesmuseum; ZOBODAT - Literatur
[iNaturalist]
iNaturalist
[maps]
Warning! The maps are automatically generated from the textual information, and the process does not always produce acceptable result; See about maps for more info.

Some related literature:

Barnes & McDunnough, 1912
Revision of the Megathymidae Contr. nat. Hist. Lepid. N. Am. 1 (3) : 1-43, pls. 1-6
Boisduval & Le Conte, [1834]
Histoire générale et iconographie des lépidoptères et des chenilles de l'Amérique septentrionale Hist. Lép. Am. Sept. (1): 1-16. pl. 1-3 (1829), (2): 17-24, pl. 4-6 (1829), (3/4): 25-40, pl. 7-12 ([1830]), (5/6): 41-56, pl. 13-18 ([1830]), (7/8): 57-80, pl. 19-24 ([1830]), (9/10): 81-100, pl. 25-30 (1833), (11-22): 101-196, pl. 31-65 ([1835]), (23-26): 197-228, pl. 66-78 ([1837])
Dyar, 1903
A List of North American Lepidoptera and Key to the Literature of this Order of Insects Bull. U.S. nat. Mus. 52 : 1-723
Freeman, 1943
Notes on and redescriptions of Megathymus yuccae (Boisduval & LeConte) and its subspecies (Lepidoptera, Rhopalocera, Hesperioidea) Ent. News 54 (9) : 211-217
Freeman, 1944
Notes on the streckeri group of the genus Megathymus Ent. News. 55 : 103-105
Freeman, 1952
Notes on Megathymus yuccae (Boisduval & LeConte), with description of a new subspecies (Lepidoptera, Rhopalocera) Field & Lab. 20 (1): 29-33
Freeman, 1955
Four new species of Megathymus (Lepidoptera, Rhopalocera, Megathyminae) Amer. Mus. Novit. 1711: 1-20
Freeman, 1963
Megathymus yuccae in Texas, with description of two new subspecies J. Lep. Soc. 17 (2): 89-99
Freeman, 1965
Two new subspecies of Megathymus yuccae (Bdv. & LeC.) from Texas J. Lep. Soc. 19 (2): 83-90
Freeman, 1969
Systematic review of the Megathymidae J. Lep. Soc. 23 (Suppl. 1) : 1-59
Gatrelle, 1999
Subspecific status of southeastern U.S. Megathymus cofaqui and M. yuccae: renaming of the Florida subspecies of M. cofaqui Taxonomic Rep. 1 (4) : 1-6
[NACL]; Hodges, 1983
Check List of the Lepidoptera of America North of Mexico Check List Lep. Am. N of Mexico
Holland, 1930
New species and varieties of North American butterflies Ann. Carnegie Mus. 19 (3) : 155-160
Holland, 1931
Notes on some American butterflies mainly relating to classification and nomenclature. Part 2 & 3 Ann. Carnegie Mus. 20 (1): 39-55 (1930), (2): 255-264 (1931)
[NL4A]; Lamas, 2004
Checklist: Part 4A, Hesperioidea - Papilionoidea Atlas of Neotropical Lepidoptera
[BOW]; Lewis, 1974
Butterflies of the World
Poling, 1902
A New Megathymus from Arizona Ent. News. 13 (4) : 97-98
[NAB]; Pyle, 1981
Field Guide to North American Butterflies, National Audubon Society
Scudder, 1872
A systematic Revision of some of the American Butterflies; with brief notes on those known to occur in Essex County, Mass. 4th Ann. Rep. Peabody Acad. Sci. (1871) : 24-83,errata
Skinner, 1895
A new Aegiale (Megathymus) Can. Ent. 27 (7) : 179
Skinner, 1911
A new Variety of Megathymus yuccae (Lepid.) Ent. News 22 (7) : 300
Skinner in Smith, 1891
List of the Lepidoptera of Boreal America List Lepid. Boreal Amer. : 1-124
Stallings & Turner, 1956
Description of a new subspecies of the Megathymus yuccae (Bdv. & LeC.) complelx Bull. So. Calif. Acad. Sci., 55: 150-152
Stallings & Turner, 1956
Notes on Megathymus ursus, with description of a related new species Lepid. News 10 (1-2) : 1-8
Stallings & Turner, 1958
A review of the Megathyminae of Mexico, with a synopsis of the classification of the family Lepid. News 11 (4-5) : 113-137 (1957)
Stallings, Turner & Stallings, 1963
Two new species and one new subspecies of Megathymidae from Mexico and Texas J. Lep. Soc. 17: 81-88, 2pls
Stallings, Turner & Stallings, 1966
Two new species and two new subspecies of Megathymidae from Mexico and the United States J. Lep. Soc. 20: 163-172, 4pls
Strecker, 1876
Description of a new species of Aegiale, and notes of some other species of North American Lepidoptera Proc. Acad. Nat. Sci. Philad. 28 : 148-153
Tinkham, 1954
The biology and description of a new giant skipper from Arizona Bull. So. Calif. Acad. Sci. 53: 75-87, 2pls
Wielgus, Wielgus & Wielgus in Wielgus & Wielgus, 1972
A new subspecies of Megathymus ursus Poling (Megathymidae) from Arizona with observations and notes on its distribution and life history Bull. Allyn Mus. 9 : 1-11
Zhang, Cong, Shen, Opler & Grishin, 2020
Genomic evidence suggests further changes of butterfly names Taxonomic Rep. 8 (7) : 1-41

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Keep in mind that the taxonomic information is copied from various sources, and may include many inaccuracies. Expert help is welcome.

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