On the Scale Insect of Mulberry Trees. 



(DlASPIS PATELLIFORMIS N. SP.) 

 BY 



C Sasaki, Rigakuhaknshi, 



Professor of Entomology , Agricultural College, Imperial University, 



Tokyo, Japan. 



With Plates I. — II. 

 I). Description of the Mature Insects- 

 Male. — The body is orange red ; legs, antennae, veins of 

 wings, balancers and anal filament yellow ; head comparatively 

 small, slightly pointed in front, where are two long and slender 

 antennae (Fig. i ; Fig. i, a; PI. I). The antennae (Fig. i, d) are 

 composed of ten segments, of which the first is short, large, and 

 stout ; the second shorter and smaller than the first ; the re- 

 maining eight segments are cylindrical and nearly equal in 

 size and form, while the terminal tenth segment has a pointed 

 end. Its length is 0,7 mm. 



Eyes (ocelli) are globular, prominent, and four in number, 

 two on the dorsal and two on the ventral side of the head (Fig. 

 1, b and c: PI. I.). The dorsal pair of eyes, which lie near the 

 lateral sides of the head, are reddish ochre brown and are 

 surrounded by a dark brownish ring at the base. The ventral 

 pair, which are similar in size, form, and color, to the dorsal 

 pair, lie a little removed from the lateral margin of the head. 



The thorax is ovate oblong, its anterior edge is nearly 

 straight. The three segments — pro-, meso-, and meta-thorax — 

 are more or less marked off from one another. The pro-thorax 

 which is small, nearly quadrangular in form on its dorsal side, 

 is much longer and broader on its ventral side, and its tergal 

 face is marked with two dark orange inclined lines. 



The meso-thorax which is the largest of the thoracal seg- 

 ments is somewhat angular in front, and rounded at the posterior 

 end. The tergal side of the same segment is vaulted, and its 

 scutum is marked with a dark broad reddish orange transverse 



