ON THE SCALE INSECT OF MULBERRY TREES. 
II9 
insect, in all three different stages,—larva, pupa and imago. 
These differences, I think, afford sufficient grounds to justify me 
in giving a new specific name, “patelliformis,” to our scale 
insect. * ï 
In the following lines I will mention all the characteristics 
of male, female, and larva of our scale insect, which differ from 
those of Diaspis pentagonia, Targ. described by the above men¬ 
tioned authors. 
•» \ • - •* -* 
I. Male. 
a. Antennæ are composed of ten segments, of which the 
terminal one is rather long and slender, and somewhat pointed 
at the free end. 
b. Of the three segments of the thorax, the pro-thorax 
is nearly quadrangular, the meta-thorax is short and wide, and 
is closely jointed along its entire breadth to the first abdominal 
segment, and is not triangular in form. 
c. The abdomen is long and conical, not elliptical. 
d. The balancer is composed of two portions, the basal 
half club-shaped, while the distal half is reduced into the form 
of bristles with a hook-like end. 
* N. t . / . V > 4 » * - '. . . » * , 
e. The tibia of the leg is long and cylindrical, not trian¬ 
gular in form. At the insertion of a claw on the tarsus, there 
are beset three long hairs of nearly equal length, bearing a small 
round head at their free end. 
II. Female. 
a. The body is composed of nine segments which are 
indicated by sutures (segment-lines) as well as by the rows of 
secretory pores. 
b. The antennae are formed of single broad segments 
with their free end divided into three pointed branches, and near 
the base of the antennæ there is a single long bristle. 
c. One or two rows of secretory pores lie dorsally along 
the suture of the 5th-6th, öth-yth, 7th—8th, and Sth-gth seg¬ 
ments. • * 
d. The bristles on the pygidium are either simple or 
divided, having on each free end a very long fine filament. 
