68 R- Takaha&hi 



Key to instars. 

 ( 1 ) Antennae 5-joiuted (2) 



Antennae G-jointed (3) 



( 2 ) The 3rd autonnal joint almost as long as the 5th The 1st iustar. 



The 3rd antennal joint longer than the 5th The 2nd instar. 



( 3 ) Wing-pads not well developed or body much smaller than 



that of the adult The 3rd instar. 



Wing-pads well developed or body a little smaller than that 



of the adult The 4t]i instar. 



(The first instar) Pale greenish yellow. Eyes red. Antennae pale greenish, 

 dusky on the apices of the 3rd and 4th joints and the distal half of the 5th. Legs 

 pale greenish, slightly dusky on the tarsi. Body oblong, broadest near the middle of 

 the abdomen, very slightly more than twice as long as wide. Head rather large, on 

 the dorsal surface provided with 6 groups of very small wax-pores arranged in 

 pairs; these groups protuberant, with a rather long bristle arising from the center of 

 each. 



Eyes somewhat protuberant, with the ocular tubercles not distinctly so. 

 Frontal tubercles lacking. Antennae more slender than tiie tibia, much shorter 

 than the body, 5-jointed; the 1st joint almost as long as the 2nd, with a rather long 

 bristle like the 2nd; the 3rd without sensoria; the 4th and 5th with some very 

 minute spinules; the 4th almost as long as the 1st and 2nd taken together, with a 

 bristle near the middle, the sonsorium circular, rather small; the relative length of 

 joints about as follows: III -24, IV-15, V-25 (17-|-8). Rostrum stout, almost rea- 

 ching the hind coxae. Meso and metathoraces and most of the abdominal segments 

 ea "h provided with 4 groii])S of wax-pores arranged as in the adult in a row on the 

 dorsum; from the center of each of these groups a rather long bristle arises. Corni- 

 cles wider than long, similar to tiiose of the adult in shape. Anal plate not bilobed. 

 Cauda almost semicircular ^vhen seen from above, without hairs. Legs stout, 

 provided with some long bristles; liiud tarsi almost as long as the basal part of the 

 last antennal ioint. 



Length of body-about 0.(35 mm. Antenui-about 0.35 or mure mm. 



(The 2nd instar) ].)iticrs from the 1st instar in the fulluwing points: 



The relative length of antennal joints about as follows: 111-35, IV-18, V-28 

 (•20-f 8). Body about 0.85 mm. in length. 



(The 3rd iustar) JJitfers from the 2nd in the following points: 



