Bug FAQCommon Yamfly
Loxura atymnus · Order: Lepidoptera · Family: Lycaenidae
Also called: Yamfly
The Common Yamfly is a small blue butterfly about 0.9 mm across (±0.09 mm). It lives in Asia and is recognized by a bright fulvous upperside, a black band along the forewing edge, and a narrow pale ochreous-brown band on the hindwing margin. Its life cycle can be completed in roughly three weeks under laboratory conditions, allowing several generations per year.
Source: Wikipedia
How to recognize it
The upperside of the butterfly is bright fulvous. The forewing has a black band that starts midway on the costa, follows the outer margin, and curves inward continuously. The hindwing shows a very narrow pale ochreous-brown band along the outer edge, with some of the same colour at the wing bases.
Source: Wikipedia
Size
Its wingspan measures about 0.92 mm, give or take 0.09 mm.
Source: Wikipedia
Where it lives
The yamfly is a lycaenid butterfly found in Asia.
Source: Wikipedia
Life cycle
In the lab the full life cycle took 23 to 26 days, though temperature can change this timing. Because the cycle is short, the species can produce several generations each year.
Source: Wikipedia
Where it comes from
It is native to Asian regions.
Source: Wikipedia
More photos
Questions people ask
How long does the Common Yamfly’s life cycle last?
Under laboratory conditions it completes its life cycle in about 23 to 26 days, and it can have multiple generations per year.
Source: Wikipedia
What does the Common Yamfly look like?
It has a bright fulvous upperside, a black band along the forewing edge that curves inward, and a narrow pale ochreous-brown band on the hindwing margin.
Source: Wikipedia
Same family (Lycaenidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Loxura_atymnus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.