4K HD Wallpaper: Asian Predatory Wasp
Vespa Velutina (scientific name) in 4K photography (macro) is available under CC By-Sa license to be downloaded and used as lockscreen phones, desktop backgrounds or in other projects.
Widescreen Desktop / Macbook: 2560x1600 (fits on: 1920x1200, 1440x900, 1280x800)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x1536 (compatible with almost all tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many smartphones)