Apliidiilue of Formojii. — 3. 59 



Nyinpli. 



Key to the instars. 



( 1 ) Antennae 4-jointeJ The 1st in'staf. 



Antennae 5-jomted The 2n(l inster. 



Antennae G-jointed ..v........... (2) 



( 2 ) Wing-pads not well developed .-..■..The 3rd instar. 



Wing pads well developed .....................................The 4th instar. 



(The first instar) Pale yellowish green. Eyes red. Antennae pale ycUoAv, 



with the apex of the ;5rd joint and the 4th very slightly dusky. Ixigs pale yellow; 

 tarsi slightly dusky. Cornielts and eaiHja yellowish. Hairs blackish brown. Body 

 oblong, broadest at tlie midlength of the abdomen, nearly twice, or slightly more 

 tfiau twice,, as long as wide, about 1 .5 times as Icng as the antenna, provided with 

 many very long stout hairs arising from very small tubercles on the di)rsnm; these 

 hairs almost as long as, or slightly longer than, the 1st antenual .joint, scarcely or 

 very slightly capitate. Head large, provided with 3 pairs of long hairs between the 

 antennae and 4 similar hairs arranged in a transverse row between the eyes. Eyes 

 somewhat protuberant, without ocular tubercles. Frontal tubercles quite short. 

 Antennae 4 jointed; the 1st joint larger than the 2nd,- provided with a long haiT;'the 

 2nd lik<;wise provided witli a long hair; the 3rd more slender than the front tibia, 

 provided with many minute spinules, ami a long bristle near the apex, tlie sensoriura 

 rather small; the 4th longer than the basal two joints taken together, provided witJi 

 minute spinulcs, a moderately long bristle below the sensoriuni, and a few similar 

 ones at the tip; the relative length of joints as follows: III-43, IV-30 (15-f-15). 

 Rostrum reaching tJic middle coxae. Prothorax provided with a pair of somewhat 

 shorter hairs on the middle of the dorsum, behind which arie 4 long hairs arranged 

 in a transverse row. 



Each mcso-and mctathoraeic segment and the first seven abdominal segments 

 provided with 4 long hairs arranged in a transverse row on the dorsum; of these 

 hairs the middle two on the 1st and 4th abdominal segments arc often shorter; the 

 8th abdominal segment with a pair of longer hairs on the dorsum. Alxlomeu 

 without finger-like tul)ercles. Cornicles very short, much wider than long. 



Cauda much wider than long, broadly rounded, not constricted at the base, 

 almost semicircular wlien seen from above, without hairs. Anal plate not bilobed, 

 Mith a pair of long bristles. 



Legs stout, provided with some moderate to rather long bristles; hind tibiae 



