Aphididae of Formosa. —I. 25 



tarsi, with 2 very slight constrictions, provided with 2 pairs of lateral 

 hnstle.«. Legs ratlier stout, with some moderately long setae. 



Length of body — 1.5 mm. Antenna — 0. So nun. 



Cornicle — O.o.") mm. 



Winged viviparous female. 



Pale yellowish green. Iilyes black. Head and antennae black. 

 Mesothorax blackish. Cornicles pale brown. Legs pale brown, 

 apices of tibiae and tarsi black. Cauda pale green. Wings hyaline; 

 stigma pale gray; veins pale brown. 



Head with some very short stout hairs. Frontal tubercles as in 

 the wingless form. Antennae imbi'icated, lacking hairs; the 3rd joint 

 provided with 6-8 circular sensoria of median size in a row on the 

 middle portion; tb.e 4th joint lacking sensoria; tlie relative length of 

 joints as follows: 111-58, IV-30, V-20, VI-54 (11 +4:5). Rostrum 

 reaching the middle coxae. Wings normal; the I'nd l)ranch of the 

 3rd oblique rather short; hind wings with 2 obliques; booklets 3. 



Cornicles almost as in the wingless form, a little shorter than the 

 spur of the last antennal joint, about 4 times as long as wide. 

 Body — 2. (J m m . Antenna — 1 . 4 nnn . 



Cornicle — 0.3 mm. 



Host. — HemerocalUs fulva. 



Distribution. — Formosa (Taihoku). 

 Collected by Mr. T. Abe. 



Myzus fovmosartemlsiae n. sp. 

 Wingless viviparous female. 

 White. Eyes black. Antennae, cornicles, cauda and legs white; 

 tarsi slightly dusky. 



Body elongate, soft, with numerous long capitate hairs. Head 

 with 3 pairs of long capitate hairs arising from short tubercles between 

 the frontal tubercles and 4 capitate hairs in a transverse row l>etween 



