>22 B. Takabaahi. 



This species differs from C. formosartemisiae Takah. (Aphididae of Formosa, 

 1. p. "Jo) in the following characters: (1) Tin- 3rd antenna! joint almost as 

 long as the 5th, provided with more longer capitate hairs- (2) Cornicles stouter, 

 somewhat curved. 



Matsumuraja formosana ». sp. 



(PL II, A. figs. 2-4) 

 Wingless viviparous female 



White: cornicles and cauda white. Antennae white, dusky on the distal 

 halves of the 3rd. 4tli and 5th joints and the 6th. Body elongate oval, mi the 

 dorsum provided with many capitate hairs which are Bubequal in length, almost 

 as long as or slightly shorter than the 2nd antenna] joint, each arising from a 

 small or large tubercle. "Head on the dorsum furnished with 8 capitate hairs 

 thai are almost as long as the 2nd antennal joint, each arising from a very small 

 tubercle. Frontal tubercles distinct, somewhat convex on the inner side, furnished 

 with a few capitate hairs which are slightly longer than those on the dorsum 

 of the head. Eyes small. Antennae slender: the 1st joint much larger than 

 the 2ml. provided with a long projection which is almost as long as the joint, 

 rounded at the apex, with about 3 shorter capitate hairs: the 2nd provided with 

 a few very short capitate hairs: the 3rd and 4th not imbricated, provided 

 with a few very small hairs, without sensoria; the 5th somewhat imbricated" 

 the relative length of joints about as follows: [11-69, IV-44. V-47. VI-106 

 (28 + 78). Rostrum reaching beyond the middle coxae. Cornicles long and slender. 

 cylindrical, scarcely curved, expanded at the base, scarcely expanded on the 

 distal half, imbricated except on the distal portion, almost as long as or slightly 

 longer than the distal part of the last antennal joint, shorter than the front 

 tibia, about '■> times as long as the cauda. Cauda very stout, stouter than the 

 coinicle. gradually tapering, with the apex rounded, about 1.5 times as long as 

 wide, very slightly constricted at the base when seen from above, almost as long 

 as the basal part of the last antennal joint, longer than the capitate hair on the 

 abdomen, provided with 2 pairs of lateral bristles. Legs long and slender: 

 tibiae almost as stout as or slightly more slender than the cornicle, very slightly 

 stouter than the 3rd antennal joint, provided with many setae, the basal portion 

 provided with a few short capitate hairs: hind tibiae shorter than the antenna; 

 hind taris almost as long as the basal part of the last antennal joint. 



