Aphiilulae of Formosa.— 3. 97 



groups of wax-pores (3 pores in a group) present at the middle of the dorsal surface. 

 Eyes not protruding, 3 facets on tiie hind margin much larger than other facets and 

 protruding. Antennae short, very stout, almost as stout as or more so than the legs, 

 curved lackwards along the side of the head, 5-jointed; tlie 1st joint provided with a 

 long bristle; tlie 2nd, 3rd and 4th without hairs; the 5th with a few long hairs on the 

 tip; sensoria extremely small; the relative length of joints as follows: 111-43, IV-16, 

 V-17. Rostrum stout, very short, reaching slightly beyond the hind margin of the 

 ])rothorax. Pronotum provided with 4 tubercles. Mesothorax very large, provided 

 with some long bristles and witli 4 tubercles on the dorsum. Wing-pads rather 

 small. Metanotum with 4 tubercles. Abdomen with 6 tubercles on either side and 

 2 similar pairs at the middle of the dorsal surface. Cornicles very short, striate, of 

 lachnid-appearancc, without hairs. Cauda much wider than long, not constricted, 

 with a few rather short bristles. Anal plate not bilobed. Legs very stout, tibiae 

 provided with some or many very long bristles; tarsi stout, almost as long as the 5th 

 antennal joint, with some long bristle; claws very short. 



Length of body-about 1.'^ mm. Antenna about 0.38 mm. 



Grown nymph of wingless viviparous female. 

 Yellowish. Eody oval, somewhat flattened, very slightly covered with 

 a powder; the segments not defined; without tubercles, provided with 22 very long 

 liristles arising from very small tubercles along tiie whole margin, 5 short bristles on 

 the side of the terminal part and a few very short hairs on the dorsum. Eyes 

 small, composed of 3 facets. Antennae very short, almost as long as the bristle on 

 the margin of the body, 3-jointed, arising from the under side of the head. Head 

 and thorax provided witli a few ])airs of small groups of indistinct wax ))ores? 

 Cornicles absent. Cauda not distinct. Anal plate not bilobed. Legs very short; 

 hind tibiae provided with a few long bristles on the tip; tarsi 1 -jointed; hind tarsi 

 almost as long as the 3rd antennal joint, furnished with a few very long bristles. 



Length of body-al out 0.6 mm. 



Nymph (the Ist inslar) 

 Yellow. Head very sligJitly dusky. Eyes almost black. Antennae and legs 

 dusky. Body oval, ratJier flat, without tubercles or wax, almost twice as long as 

 wide, almost 3.4 times as long as the antenna, the segments ill-defined; the body 

 provided with 34 long stout hairs along the whole margiu, these almost as long as 

 tiie 3rd antennal joint, with 4 or 5 j)air3 of similar liairs on the middle of the dor- 

 sum. Eyes smill, of 3 facets. Antennae imbricated, arising ft-om the lower side 



