Apliididae of Formosa. — 3. 77 



reaching the middle coxae. Abdomen witliout tubercles. Corniides small, very 

 short, situated on very shallow cones which are provided with some very long haira. 

 Cauda very short, rounded, with some very long hairs. Legs very long, with many 

 very long hairs; hind tibiae stouter than the 3rd antennal joint; hind tarsi scarcely 

 imbricated, about twice as long as the distal part of the last anlennal joint. 

 Eody-about 2.5 mm. Antcnna-about 1.6 mm. 



Winged viviparous female. 



Head, eyes, antennae and thorax black. Abdomen brownish, each segment 

 on the dorsum with a large black marking at the middle and some additional very 

 small black patches. Wings dusky in two specimens the author has examined, with 

 the stigma blackish. Legs black. Body elongate, with many very long hairs. Head 

 much wider than long, not divided on the dorsal surface. Eyes with distinct ocular 

 tubercles. Frontal tubercles lacking. Antennae somewhat imbricated, furnished 

 with many very long fine hairs; the 3rd joint provided with about 68 large to 

 medium-sized, protuberant, circular or oval sensoria scattered over the whole 

 length; tlie 4th with about 25 similar sensoria; the 5th with from 5-12, the primary 

 sensorium large, circular; the 6th with about 2 small sensoria on the basal part; the 

 relative length of joints about as follows: 111-130, IV-65, V-62, VI-58 (38-f 20). 

 Rostrum reaching the middle coxae. 



Subcosta of the front wing furnished with some (about 25) very long hairs 

 arranged in a single row along the whole longth; the Ist oblique nearly straight; 

 the 2nd slightly curved; the 3rd twice forked, the upper branch extending to 

 slightly above the tip of the wing; stigma short and stout; stigmatie vein moder- 

 ately curved; hind wings with 2 divergent obliques; booklets 4. Abdomen without 

 tubercles. Cornicles and cauda as in the wingless form. Legs very long and slen- 

 der, furnished with many very long fine hairs; tibiae more slender than the 3rd 

 antennal joint; hind tarsi slightly imbricated, about twice as long as the distal part 

 of the last antennal joint. 



Length of body-about 3.0 mm, Antenna-about 1.7 mm. 

 Fore wing-about 4.0 mm. 



Host.-A tree the name of whic^h hiis not been determined, attacking the lower 

 side of the young leaf. 



Distribution.-Formosa. 



Some wingless viviparous females and t^o winged ones were collected on 

 December 2,1923. This aphis, the second species of the genus, differs from A. 



