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Species Eupithecia shirleyata - Hodges#7588

Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Larentiinae
Tribe Eupitheciini
Genus Eupithecia
Species shirleyata (Eupithecia shirleyata - Hodges#7588)
Hodges Number
7588
Synonyms and other taxonomic changes
Eupithecia shirleyata Cassino & Swett, 1922
Size
23 mm according to Wikipedia
Identification
"In spite of the differences noted in the original description as distinguishing the species from subapicata, the only superficial one that seems to hold is the smaller size. There are tendencies towards a duller wing coloration, especially in the males, and the pale apical areas may be somewhat reduced in size, but these features do not always hold. The genitalia in both sexes offer, however, good characters." (1)
Range
Southern California (Pasadena, SanDiego, and adjacent areas). (1)
Season
"end of November until late March or even early April" (1)
See Also
Eupithecia subapicata is larger. Separated best by genitalia. (1)
Eupithecia redingtonia is similar in size but with pale subapical costal reduced to nearly obsolete. Range: AZ. (1)
Print References
Cassino, S.E. & L.W. Swett, 1922. New Geometrids. The Lepidopterist 3(9): 165-166 (p. 165 is missing)
McDunnough 1949 p. 668; pl 31, fg. 16 (1)