Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes



Species Pelochrista ridingsana - Snakeweed Borer - Hodges#3014

Tortricidae: Eucosma ridingsana - Pelochrista ridingsana Tortricidae: Pelochrista ridingsana - Pelochrista ridingsana Silver and tan moth - Pelochrista ridingsana Striking small moth - Pelochrista ridingsana Striking small moth - Pelochrista ridingsana Pyraloidea? - Pelochrista ridingsana Pelochrista ridingsana Pelochrista griselda - Pelochrista ridingsana
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Tortricoidea (Tortricid Moths)
Family Tortricidae (Tortricid Moths)
Subfamily Olethreutinae
Tribe Eucosmini
Genus Pelochrista
No Taxon (ridingsana group)
Species ridingsana (Snakeweed Borer - Hodges#3014)
Hodges Number
Synonyms and other taxonomic changes
Pelochrista ridingsana (Robinson, 1869) (1)
Conchylis ridingsana Robinson, 1869
Eucosma ridingsana (Robinson, 1869)
Explanation of Names
Specific epithet in honor of collector James Ridings (1803-1880), founder of the Philadelphia Entomological Society and one of the first to collect in the Colorado Territory.
Robinson (1869) listed a wingspan of 23 mm.
Powell & Opler (2009) listed the forewing length 7.5-13 mm. (2)
Robinson (1869) original description as Conchylis ridingsana is online and linked in the print references.
Found throughout most of the western two-thirds of North America. (3)
Moth Photographers Group - large map with some distribution data.
Types: Colorado Territory (James Ridings).
The main flight period is July to October. (4)
Larva bore into broom snakeweed, Gutierrezia sarothrae (Pursh) Britton & Rusby. (5)
See Also
Pelochrista fernaldana which is similar but has reddish ground color

Pelochrista griselda is also a western species and can be difficult to separate based upon maculation according to MONA Fascicle 9-5, however griselda generally flies earlier from March to June (4)
Pelochrista argentifurcatana can be difficult to separate based upon maculation, however it is generally found east of the Mississippi River. (4)

Compare to others on the pinned plates of Moth Photographers Group
Print References
Gilligan, Wright & Gibson, 2008. Olethreutine Moths of the Midwestern United States. Ohio Biological Survey: 103.135. (6)
Powell, J.A. & P.A. Opler, 2009. Moths of Western North America. University of California Press, pl. 15, fig. 23-24; p. 134. (2)
Robinson, C.T., 1869. Notes on American Tortricidae. Transactions of the American Entomology Society 2: 285.
Works Cited
1.Revised world catalogue of Eucopina, Eucosma, Pelochrista, and Phaneta (Lepidoptera: Tortricidae: Eucosmini)
Todd M. Gilligan, Donald J. Wright. 2013. Zootaxa 3746(2): 301–337.
2.Moths of Western North America
Powell and Opler. 2009. UC Press.
3.North American Moth Photographers Group
4.Pelochrista Lederer of the Contiguous United States and Canada (Lepidoptera: Tortricidae: Eucosmini)
Donald J. Wright & Todd M. Gilligan. 2017. The Wedge Entomological Research Foundation, Fascicle 9.5.
5.Larval host plant records of Asteraceae root-feeding Eucosmini in California and adjacent states (Tortricidae)
J. A. Powell, P. A. Opler . 2006. Journal of the Lepidopterists' Society 60(4): 189-193.
6.Olethreutine Moths of the Midwestern United States, An Identification Guide
Gilligan, Todd M., Donald J. Wright, and Loran D. Gibson. 2008. Ohio Biological Survey, P.O. Box 21370, Columbus, Ohio 43221-0370.
7.BOLD: The Barcode of Life Data Systems