Phenacoccus Cockerell

Phenacoccus Cockerell

We have examined several species of Phenacoccus (listed in Table 1) including the type species, Ph. aceris, with particular emphasis on those species with more than two setae in the cerarii.

Diagnosis of adult female. Eye height usually shorter than first antennal segment; antennae usually with 8 or 9 segments, but sometimes with as few as 6; 0–2 antennal intersegmental sensilla present between segments VI– VII, absent between segments III–IV, IV–V; 2 campaniform sensilla on each surface of each trochanter; claw lacking basal spurs; claw digitules capitate but tarsal digitules simple; 18 or fewer pairs of cerarii; tubular ducts usually absent on frons; trilocular pores on venter smaller than those on dorsum, dorsal and cerarian pores approximately equal in size; quinquelocular pores usually present. First-instar nymph: 6-segmented antennae; multilocular pores with>5 loculi absent. Adult male: head with one pair of dorsal and one pair of ventral simple eyes plus lateral ocelli; 2 pairs of lateral filaments on posterior abdominal segments (each filament from glandular pouch on each side of abdominal segments VII and VIII); penial sheath apparently 2-segmented, apex of aedeagus simple and slightly rounded or pointed (Beardsley 1960, 1962; Miller & Appleby, 1971; Hardy et al. 2008; Hodgson et al., 2008).