Aphidiiiae of Formo.^a.— 3. gS 



i'roin ulwvc, with the lipcx rounded, as long as wide, almost as long as tluj Uise of the 

 last anteunal ,'oint, somewhat longer than the iiind tarsi, f-lightly more tiian twice as 

 long as tlie cornicle, with some moderately long bristles. I^cgs stout; tibiae as stout 

 as tlie ord antennal 'oint, provided with a feM' moderately long setae and some long 

 bristles. 



Length of body aLo lit l."2 mm. Antonn;i alwut 1.0 mm. 



Host- Lecrsia hexnndra. attacking tlie upper surface of the blade. 



Uistribiitiiin.-Forniosa: Taihoku, Tainan. 

 Japan : Tokyo. 



Described from specimens collected on January 18, 1923, at Tailiuku. 

 Cryptosiphum artemisiae Buckt. 



Aphididae of Formosa-'?, ]ip. 40 and 112 (1923). 



syn. Pscu(lo/achii/is i/o//i(}'ji. Shin'i, Dobutsugaku-Zasshi, xxxiv, no. 406, p. 

 7;J0 (l!i22). 



Wingless viviparous female. 



Dark pur[)lis]i, somewhat covered with powder. Body very wide. Head 

 small, with a few sjiort hairs. Frontal tubercles lacking. Eyes small, composed of 

 less tliau 40 fiicets, the ocular tubercles not distinctly protruding. Antennae short, 

 imlirica'cd, more slender than tlie tibia, provided with a few sliort setae; the 1st 

 joint somcwJia', shorter thin the 2iid; the ;)rd without seusoria; the 4th almost as 

 long as the 2u(l, the 5th Somewhat narrowed toward tlic base, with an aiiical senso- 

 lium ol nicdiiun size; tiie relative lengtli of joints as follows: 111-34, lV-13, \-lb, 

 \'l o7 (IS-f-Hl). Rostrum reaching tlie middle coxae. Body lacking tub'icles. 

 Alidoiiun with a few rather sliort hairs arranged in a single row on the s'giiu'iit; 

 those on tJu' distal segiinuits much longer. Cornicles very short, almost lik ; pores, 

 (.'audii sliort, much shorter tlian wide, broadly rounded, with 4 bristles. Ij(gs 

 rather short, slender; tibiae provided with some moderately long setae; tarsi some- 

 \\ hat imbricated; hind tarsi shorter than the 3rd antennal joint. 

 Length of body-about 1.4 mm. Antenna-about 0.55 mm. 



Winged viviparous female. 



Head provided with about 8 very short hairs ou the dorsal surface. Frontal 

 tuliercles lacking. Eyes not very large, with ocular tubercles. Anterior ocellus 

 protulieraut. Antennae slender, as stout as or more slender than the front tibia, 

 iniliricated, with a few short hairs; the 2iid joint longer than the 1st; the 3r(.l 

 provided with 7-12 large or small circular to subcircular seusoria mostly on the 



