Polydamas Swallowtail (Battus polydamas)
Boca Raton, Palm Beach Co., FL 6/28/2010.

Polydamas is a common swallowtail that seems to be always on the wing, never stopping for long. This is the only one I was able to photograph, because it had stopped to lay a batch of eggs on a pipevine (Aristolochia sp.), the caterpillar host plant.

Polydamas Swallowtail (Battus polydamas)
Boca Raton, Palm Beach Co., FL 6/28/2010.

Freshly laid eggs.

Polydamas Swallowtail (Battus polydamas)
Key West, Monroe Co., FL 6/27/2010.

The caterpillars are similar to those of the closely related Pipevine Swallowtail.

Giant Swallowtail (Papilio cresphontes)
Boca Raton, Palm Beach Co., FL 6/28/2010.

This may be a first instar caterpillar — it was tiny! When touched, Giant Swallowtails (even as tiny as this one) unfurl their very stinky stinkhorns from their head as a discouragement to predators. Their host plants are various species in the Rutaceae, the Citrus family, such as Zanthoxylum (as here).

Great Southern White (Ascia monuste)
Homestead, Miami-Dade Co., FL 6/22/2010.

Note the distinctive pale blue color of the antennal club tips, which help distinguish it from similar species.

Statira Sulphur (Aphrissa statira)
Rutherford Park, Boca Raton, Palm Beach Co., FL 6/28/2010.

Lyside Sulphur (Kricogonia lyside)
Big Pine Key, Monroe Co., FL 6/27/2010.

Lyside resembles Statira Sulphur, but has a bulging vein in the center of the hindwing.

Dina Yellow (Pyrisitia dina)
Castellow Hammock, near Homestead, Miami-Dade Co., FL 6/24/2010.

These medium-sized orange-yellow butterflies nectar at flowers, but when they stop, they almost always land underneath a leaf.

Dainty Sulphur (Nathalis iole)
near Homestead, Miami-Dade Co., FL 6/24/2010.