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Phyciodes tharos riocolorado Scott, 1992
(Pearl Crescent)

Type Specimens photo collection:

Pinned Specimens photo collection:

Distribution and Larval Foodplants:

Larval Foodplants: Asteraceae:


(From: A Catalogue of the Butterflies of the United States and Canada, Jonathan P. Pelham)

Genus Phyciodes Hübner, [1819]

Verz. bekannt. Schmett. (2): 29. Type-species: Papilio cocyta Cramer, 1777, Uitl. Kapellen 2(9): 7, pl. 101, figs. A, B; (16): 148 (index), by designation of Scudder (1872), 4th Ann. Rep. Peabody Acad. Sci. (1871): 46. The arrangement of species in this genus follows Wahlberg et al. (2003), Syst. Entomol. 28(2): 257-273.


Phyciodes tharos (Drury, 1773)

Illustr. Nat. Hist. 1: 43-44, pl. 21, figs. 5 ♂ D, 6 ♂ V (1770); 2: index (1773, name given).

Original Combination: [Papilio Dan. Fest.] Tharos

Type Locality: “New York”; neotype from “Van Courtlandt Park, New York City.” [Bronx County]

Types: Type(s) may be in MAMU, but are probably lost. Neotype in AMNH, designated by Scott (1994), Papilio (n.s.) 7: 28, fig. 90 ♂ D.

=    euclea (Bergsträsser, [1780])

Nom. Ins. 4: 23-24, pl. 79, figs. 1 ♂ D, 2 ♂ V.

Original Combination: [Papilio] Euclea

Type Locality: “England”; stated to be “North America” by Higgins (1981), Bull. Brit. Mus. (Nat. Hist.) Entomol. 43(3): 85; neotype from “New York City and vicinity.” [New York]

Types: Location of type(s) not known, probably lost. Neotype in AMNH, designated by Scott (1994), Papilio (n.s.) 7: 28, fig. 97 ♂ D.

=    tharossa (Godart, 1819)

In: Ency. méth. 9(Ins.)(1): (256), 289-290, no. 61; cited Papilio cocyta Cramer, 1777, Uitl. Kapellen 2(9): pl. 101, figs. A, B, C; (16): 148 (index), Papilio tharos Drury, 1773, Illustr. Nat. Hist. 1: 43-44, pl. 21, figs. 5, 6, and Papilio euclea (sensu Herbst (1780), in: Jablonsky, Natursyst. Ins., Schmett. 10: pl. 274, figs. 9, 10).

Original Combination: Argynnis Tharossa

Type Locality: “l’Amérique septentrionale, & particulièrement dans l’Etat de New York” [New York]

Types: Syntype in RSM. Grimshaw (1897), Trans. R. Soc. Edinburgh 39, part I(1): 4, noted a “type” in the Dufresne collection in Edinburgh.

This name might be an unjustified emendation of tharos Drury, [1773].

=    packardii Saunders, 1868

In: Packard, Guide Study Ins.: 256-257.

Original Combination: Melitaea Packardii

Type Locality: “near Grimsby, Ontario County, Canada”

Types: Location of type(s) not known, possibly in CNC; figured by W. H. Edwards (1878), Butts. N. Am. 2(7): pl. Phyciodes 1, 11 ♀ V var. D, 12 ♂ V var. D.

=    distincta Bauer, 1975

In: Howe, Butts. N. Am.: 144, no. 6b.

Original Combination: [Phyciodes (Phyciodes) tharos] distincta

Type Locality: “Calexico, Imperial County, California”

Types: Location of holotype not known.


Phyciodes tharos riocolorado Scott, 1992

Papilio (n.s.) 6: 44; figured by Scott (1994), Papilio (n.s.) 7: figs. 1 dorsal view of gnathos and tegumen, 18 anterior edge of juxta, 23 right lateral view of papilla analis, 26 ductus bursa and bursa copulatrix, 82 ♂ V, 83 ♂ D, 84 ♀ D, 85 ♀ V.

Original Combination: P[hyciodes] tharos riocolorado

Type Locality: “wetland at Moab, Grand Co., Utah”

Types: Holotype in LACM.


Fisher, Michael S. 2006. The butterflies of Colorado. Nymphalidae ‑ Part 3. The subfamily Nymphalinae and relatives. The checkerspots, crescentspots and the true nymphs. Fort Collins; Lepidoptera of North America 7.3; Contributions of the C. P. Gillette Museum of Arthropod Diversity, Colorado State University: vi + 120 pp., photos {30 Sep 2006} 

Scott, James A. 1992. Hostplant records for butterflies and skippers (mostly from Colorado) 1959-1991, with new life histories and notes on oviposition, immatures, and ecology. Papilio (n.s.) 6: 1-171, 10 tables {5 Jul 1992} [description of Phyciodes tharos riocolorado

Scott, James A. 1994. Biology and systematics of Phyciodes (Phyciodes). Papilio (n.s.) 7: 1-120, 227 figs., 12 tables {18 Nov 1994} 

Scott, James A. 1998. Phyciodes (Phyciodes): New discoveries, new subspecies, and convergence. Papilio (New Series) 10: 1-42, 41 figs., 5 tbls. {20 Feb 1998} 

Wahlberg, Niklas, Rita Oliviera and James A. Scott. 2003. Phylogenetic relationships of Phyciodes butterfly species (Lepidoptera: Nymphalidae): complex mtDNA variations and species delimitations. Systematic Entomology 28(2): 257-273, 4 figs., 2 tbls., 1 app. {Apr 2003}

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