Lyside Sulphur
Common NameLyside Sulphur
Scientific NameKricogonia lyside
FamilyPieridae
SubfamilyPierinae
Wingspan (mm)45
Wing Patternsolid
Primary Colorsgreen, yellow
HabitatOpen arid areas, deserts, scrublands, disturbed fields, roadsides
Geographic RangeSouthern United States (Texas, Arizona, New Mexico, California, Florida), Mexico, Central America, Caribbean, and South America
Host PlantsLarrea tridentata, Guaiacum angustifolium, Kallstroemia parviflora
Flight PeriodYear-round in tropical regions; March to November in northern parts of its range
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on the leaves of host plants. The larvae are green with a pale lateral stripe, providing camouflage on their host plants. Multiple generations occur throughout the year in warmer climates.
Identification TipsThe most reliable identification feature is the solid, unmarked pale green underside of the wings, which is unique among most North American sulphurs. The upper side is typically a uniform pale yellow or white.
Description
The Lyside Sulphur is a medium-sized butterfly with a distinctive solid pale green underside, as shown in the image, and a pale yellow or white upper side. Its body is slender and light-colored.
