Eupithecia shirleyata explained

Eupithecia shirleyata is a moth in the family Geometridae first described by Samuel E. Cassino and Louis W. Swett in 1922. It is found in the US in southern California and Arizona.

The wingspan is about 23 mm. Adults are on wing from the end of November to late March or even early April.^[1]

Notes and References

1. McDunnough . James H. . James Halliday McDunnough . 1949 . Revision of the North American species of the genus Eupithecia (Lepidoptera, Geometridae) . Bulletin of the American Museum of Natural History . 93 . 533–728 . 2013-03-22 . 2013-10-29 . https://web.archive.org/web/20131029195738/http://nitro.biosci.arizona.edu/zeeb/leprefs/B093a08.pdf . dead .