At a glance, you might say two, with closer examination three; in fact there are four.

* the small grey species is Black-spotted Grass-blue (Famegana nisa [alsulus], Lycaenidae)
* the individual at front centre is a Large Grass-yellow (Eurema hecaba, Pieridae)
* the two at top left are Macleays Grass-yellows (Eurema herla, Pieridae), wet season morphs
* the remaining three are Lined Grass-yellows (Eurema laeta, Pieridae), wet season morphs

Photograph taken at a puddling site in Undara Volcanic National Park, north Queensland.
In their dry season morphs, Macleays and Lined Grass-yellows are more readily distinguishable.