108 ^- Takahashi 



Cervaphis quercus Takali. 

 (PL VIll, B, lig^^. 6-8) 



Dolmtsiigaku Zasslii (Zool. M:ig. Tokyo), xxx, No. 301, p. 458 (1'j18); 

 Aphidicke of Formosa-l, p. 69 (1921), Apliididac of Formosa-2, p, 118 (1923). 



Diverosip/mm Icunugii, Shinji, Dobutsiigaku i&.?,sh\ (Zool. Mag. Tokyo), xxxiv, 

 No.407, p. 791 (1922). 



Winged viviparous female. 



Yellow. Head and thorax brownish. Eyes red. Antennae black. Abdomen 

 with a large brownish pateh and some brownish bands and spots on the dorsum. 

 Cornicles almost black. 



(Colour notes from specimens preserved in alcohol). Body narrow. Head 

 provided with about 16 very short hairs, and a pair of horn like tubercles between 

 the antennae; the tubercles much siiortcr than the 1st antennal joint, much longer 

 than wide, rather sharply pointed, provided with a few very sliort stout setae which 

 are not pointed Eyes large, witii tlie ocular tubercles distinctly protruding as in 

 Grcenidcn. Front ocellus not visible from above. Frontal tubercles very sliort. 

 Antennae imliricated, sliort, 5-jointed, provided with a few moderately long stout 

 hairs; the 1st joint almost as long as the 2nd, convex on the inner side; tiie 3rd 

 almost as stout as the front tibia, provided with 5-9 mostly large protuberant circu- 

 lar sensoria arranged in a single row over tiie whole length; the 4th with only an 

 apical sensorium which is rather large, circular and not surrounded by hairs; the 

 relative length of joints about as follows: III-67, IV-43, V 65 (30 + 35). 



Rostrum slender, almost reaching the middle legs. Prothorax provided witii 

 a small horn like tubercle, MJiich in shape and size is almost like those on tlie liead, 

 on the notum near the front angle, and a short stout blunt tubercle on either side 

 near the hind angle. A\'ing -veins rather stout; siibcosta on the front wing provided 

 witli aliout 10 minute sen?oria, Avithout hairs; the 1st oblique only slightly or sca- 

 rcely curved; the 2nd somewhat curved toward the base of the wing on the distal 

 part; the 3rd only once forked, obsolete at the base; stigmatic vein very slightly 

 curved, extending to the apex of the wing; hind wings with only one oblique; hook- 

 lets 2. Spiracles slightly protruding. Abdomen with 3 quite minute tubercles 

 which are provided with some tiny hairs on tiie sides, and with a pair of minute 

 horn-like tubercles, that are rather sharply pointed, at tlie middle of the dorsum 

 behind the cornicle, and with some very short setae on the dorsum. Cornicles very 

 long and blender, very slightly expanded ou the distal portion, somewhat expanded at 



