Apliidlilae nf Formosa. — 3. 57 



Morphological characters: Differs from the first instar in tlio following 

 cliaractcrs: 



Eyes more protuberjint, v^ith the ocular tnbercles likewise protuberant. 

 Antennae 6 jointed; the 3rcl joint sometimes fused with the 4th, provided with 

 some long bristles; the 4th and 5th with more bristles; the relative length ot joints 

 as follows: III-35, IV-23, V 34, V-125 (33 + 92). Thorax and abdomen furnislicd 

 witli more bristles. Cornicles stout, larger, somewhat swollen near midlength, 

 almost as stout as the hind femur, not dilated at the base, about 4 times as long as 

 wide, somewhat longer than the 3rd and 4th antennal joints taken togetlier, 

 provided with many very long stout bristles, the apical portion provided witli 

 numerous minute spinules. Abdominal segments without tubercles. Caudal seg- 

 ment a little protruding at the middle of the hind margin, with 6 very long bristles. 

 Anal plate less sinuated. Hind tarsi shorter than the base of the last antennal joint. 

 Length of body-about 1.25 mm. Antenna-about 1.25 mm. 



(The third instar) Head and pronotum dusky. Eyes dark red. Antennae 

 pale yellowish, the last joint somewhat dusky. Meso-and metathoraces pale yello- 

 wish, dusky on the notum except at the middle. Abdomen reddish brown, with a 

 large blackish patch on the middle, a large dark brown patch on the dorsum near 

 tlio end, 4 rather large pale dusky patches on the side, and many small dusky spots 

 on the dorsal surface, from whicli bristles ariso. Cornicles blackish brown, darker 

 at tlie base and the apex. Legs yellowish brown, darker at tlie apices of tibiae; 

 tarsi black. Cauda pale brown. Morphological characters: differs from tlie second 

 in the fiiUowing characters: 



Body proi'ided with more bristles each arising from a small dusky spot. 

 Antennae 6-jointed; the relative length of joints as follows: III-50, IV-30, V-40, 

 VI-140 (40+100). Cornicles almost as in the second instar, but longer, almost 5 

 times as long as wide, almost as long as the 3rd and 4th antennal joints taken 

 together. Anal plate rather slightly sinuated. 



Length of body-about 1.4 mm. Antenna-about 1.5 mm. 



(The fourth instar) 



(Wingless form) Colour almost as in the third instar. Abdomen with the 

 middle part dark greenish. 



Antennae long r; the relative length of joints about as follows: IH-GS, IV-37, V- 

 50, YI-160 (45 + 115). Cornicles longer, about 6 times as long as wide. Caudal 

 segment with more Iiristles. 



