92 K. Takahaslii 



with a few rather long bristles; the 1st joiut larger than tlie 2u(l; the Srd 

 a little longer than the 1st and 2n(l joints taken together, with a very small apical 

 sensoriixm; the 4th somewhat imbricated; the relative length of joints as follows: 

 III-18, IV-18 (949). Eostrum reaching the hind coxae. Body without horns. 

 Mcso-aud metathoracic segments much larger than the abdominal segment, with 2 

 bristles on either side. Abdominal segments defined, with a bristle on either side. 

 Cornicles absent? Cauda not distinct. Anal plate not bilobed. Legs rather large; 

 furnished with a few very long bristles; tibiae stouter than the antenna; hind tibiae 

 shorter than the antenna; tarsi provided with a lew very long bristles; hind tarsi a 

 little shorter than the 3rd antennal joiut. 

 Length of body- about 0.65 mm. 



Astegopteryx styracicola Takah. 

 (PI. VI, A, figs. 1-2) 

 Aphididac of Formosa-1, p. 94 (1921 ) and ibid.-2, pp. 53 and 146 ( 1923). 



Wingless viviparous female in the gall. 

 Yellowisli brown. Eyes black. Antennae and legs almost colourless. Eody 

 In-oad and rather flat, slighty covered with powder. Head provided with some 

 very short setae. Eyes very small, composed of 3 facets. Antennae 5-jointed; the 

 3rd, 4th and 5th joints slightly imbricated, with a few rather long bristles; senso- 

 riunx very small, somewhat protuberant; the relative length of joints as follows : 

 1-7, II-7, III-14, IV-9, V-14. Eostrum almost reaching the middle coxae. Wax- 

 pores not develo]>ed. Abdomen provided with some bristles. Cornicles very short. 

 Cauda short, broadly rounded, not constricted at the base. Anal plate not bilobed. 

 Legs provided with some long bristles; hind tarsi longer than the 3rd antennal 

 joint. Stigma somewhat protuberant. 



Length of body-about 0.85 mm. Antenna -about 0.24 mm. 



Winged viviparous female. 

 Head, eyes, antennae and thorax black. Abdomen black, somewhat greenish. 

 Wings almost hyaline; stigma greenish gray; veins gray. Legs dusky. 

 Nymph (the 2nd instar?) in the gall. 

 Body narrow, provided with many very long bristles, which are longer than 

 tlie 3rd antennal joint. Head not fused with the prothorax, provided on the front 

 with 4 spine-like setae which are shorter than the 1st antennal joint. Eyes small, of 

 3 facets. Antennae short, with a few hairs, 4-jointed, sometimes 5-jointed; in the 

 4-joiuted antennae the 3rd joint almost as long as the basal 2 joints taken together, 



