These 88 species belong to the genus "Calliopsis". "Calliopsis," like other bees, use their vision to locate food. Common names include calliopsis and tickseed, a name shared with various other plants. Instead of having a long head like other bees, "Calliopsis"' s heads are quite broad. "Calliopsis" have yellow and black stripes, long legs and dark wings. Male "Calliopsis" have broad yellow stripes on their head, while females have narrow yellow stripes. Since "Calliopsis" has many different species, a lot of bees behave differently in different region. "Calliopsis" nesting aggregations can be as dense as 1,650 nests/m^2. Calliopsis is the generic name of two groups of organisms. "Calliopsis" is a genus of panurgine bees in the family Andrenidae.