498 
Journal of Agricultural Research 
Vol. XXXI, No 5 
dd . At least one pair of cerarii present on head between an¬ 
tennae; at least four, and usually more, distinctly 
developed pairs of abdominal cerarii present. 
/. Apical abdominal cerarii each normally with 
more than two spines. 
g. Apical abdominal cerarii each normally 
with four spines; series of cerarii incom¬ 
plete, one cephalic and five abdominal 
pairs present__ 
_ Pseudococcus ambiguus , new species 
gg. Apical abdominal cerarii each normally 
with eight spines; series of cerarii com¬ 
plete, present on both thorax and ab¬ 
domen_ Pseudococcus saccharifolii ( Green). 5 
//, Apical abdominal cerarii each normally with 
only two spines. 
" h. Series of cerarii incomplete, pnly one 
pair on the head and the five or six 
posterior abdominal pairp devel¬ 
oped, all the abdominal with not 
more than two spines__ 
_ Pseudococcus bomnsis (Kuwana) 
hh. Series of cerarii complete, at* least 17 
pairs present. 
i. With 18 pairs of cerarii, each with 
two spines; ventral chitinized 
thickening of anal lobes elon¬ 
gate, nearly linear, apical seta 
of anal lobes about twice length 
of anal ring setae___ 
_ Pseudococcus citri (Risso) 
u. With 17 pairs of cerarii, some of 
these with more than two 
spines; apical seta of anal lobes 
not much longer than anal ring 
seta. ... 
j. Some, at least, of interme¬ 
diate abdominal cerarii 
with more than two spines, 
in each; ventral chitinized 
thickening present, irregu¬ 
larly quadrate_ 
Pseudococcus brevipes (Cockerell) 
jj. All abdominal cerarii normal¬ 
ly with two spines in each; 
ventral chitinized thicken¬ 
ing hot noticeably devel¬ 
oped_ 
_ . . Pseudococcus calceolarjae (Maskell) 
SUMMARY 
The specific name calceolariae has, through misidentifications, 
been used in literature to designate several different species of mealy¬ 
bugs. Properly, its use must Be restricted to specimens identical with 
those collected by Maskell at Christchurch, New Zealand, on Trav- 
ersia, in 1878. The name Trionymus danthoniae, new species, should 
be applied to specimens from Danthonia from New Zealand previously 
identified as calceolariae; the name Trionymus diminutus (Leonardi) 
should be applied to specimens from Phormium tenax from several 
6 Included from a study of the original description only; no specimens examined. 
