Xerces blue
Xerces blue noun: a recently extinct species of gossamer-winged butterfly (Lycaenidae), Glaucopsyche xerces.

Noun
Xerces blue (plural Xerces blues)
- A recently extinct species of gossamer-winged butterfly (Lycaenidae), Glaucopsyche xerces.
- Last seen at the Presidio, the Xerces blue finally passed from existence in 1943.2010, Robert Michael Pyle, Mariposa Road
- In fact, the xerces blue survived that first wave of habita destruction, only to succumb in the 1940s to continuing development especially of sand dune habitats.2012, Peggy L Fiedler, Conservation Biology, page 180
Forms of Xerces blue
| plural | Xerces blues |
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Questions about Xerces blue
- What does Xerces blue mean?
- Xerces blue means a recently extinct species of gossamer-winged butterfly (Lycaenidae), Glaucopsyche xerces.
- What part of speech is Xerces blue?
- Xerces blue is a noun.
- What is the plural of Xerces blue?
- The plural of Xerces blue is Xerces blues.
Words near Xerces blue in the dictionary
Source and license
Adapted from Wiktionary: Xerces blue (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
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Cite this entry: “Xerces blue.” Word.ws, https://word.ws/xerces_blue. Based on Wiktionary, CC BY-SA 4.0.
