Aphididae of Formosa. — I. 



93 



Winged viviparous female. 



Described from only a single specimen. 



Bod.y black, almost lacking hairs. Head small, without hornlets. 

 Eyes large, with distinct ocular tubercles. Antennae short and stout; 

 the 3rd joint with 35, the 4th 17 and the 5th 11 annulations; the 

 relative length of joints as fuUows : III— 3U, IV— 21, V— r4. 



Rostrum very short, not reaching the middle coxae. Mesothorax 

 verN' large. Wings ample, dusky, infuscate on the basal area; the 1st 

 oblique somewhat stouter than the 2nd, the 1st and 2nd obliques 

 united at their bases; tlie 3rd oblique once forked, obsolete at the base, 

 as stout as the stigmatic vein; subcosta with 12-16 minute circular 

 sensoria over the whole length and 7 very minute sensoria near the 

 base: hind wings with 2 divergent obliques; booklets 5. 



Cornicles very short, represented b}' pores. Spiracles slightly 



protuberant. Cauda wider them long, very slightl}- constricted at the 



base; with some bristles. Anal plate bilobed, with some bristles. 



Legs slender, with many Jiairs; the 2nd tarsus with 2 long capitate hairs. 



Length of body — 2.0 mm. Antenna — 0.75 mm. 



Fore wing — 3.0 mm. Width of fore wing — 1.2 mm. 



Host. — Ficus rcttim f 



Distribution. — Forn^josa (Taihoku). 



( )nly a specimen was collected on a leaf of Ficus letv-^i in Ma}', 

 1920 by the author. 



This species is easily distinguished from other species of 

 Astegopteryx by the number of the antennal sensoria. 



Aslegopteryx qnerclcola n. sp. 



Winged viviparous female. 



Described from specimens preserved in alcohol. 



Head black. Eyes blackish brown. Antennae pale l)lackish 



brown. Mesothorax blackish brown. Abdomen yellowish brown. 



Legs dark yellowish brown. Wings along the 1st and 2nd obliques 



