Abstract: Despite male morphology was of great importance for Coccoidea classification, little information about Phenacoccus solenopsis males was published. To supplement taxonomic information of P. solenopsis, morphological changes during individual development of P. solenopsis males were described in this study. The results showed that P. solenopsis eggs were oval, slightly translucent and pale orange yellow. The first instar nymph was yellowish green and moved fast. For the early second instar nymph, its body surface was smooth and bright yellow with two visible black spots on the back. Male and female individuals could be distinguished by morphological character in late-2nd instar stage. The pre-pupa stage of the males lasted 1-2 d. In this stage, the body was long and narrow, and the males began to produce white silk to cover their whole body. Pupae were in a soft silky cocoon. In the cocoon, the body was covered by white wax power. Male adults showed in barrel-shaped body, developed ocellus, degenerated mouthpart, long antennae, thin front wing, poisers developed from the degenerated hind wings, and two pairs of long wax filaments at the terminal abdomen.

Key words: Phenacoccus solenopsis Tinsley, male, morphological change, development duration