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somewhat inflated, causing the skin to stretch and take on a shiny 

 appearance. Molting is always preceded by evacuation of the gut 

 contents and cessation of movement. At the initiation of the molt, 

 the old skin, which is glued posteriorly to the substrate by the 

 excretion (secretion) of a substance, splits in the region of the head 

 capsule and the new instar pulls out of it by anteriorly directed 

 peristaltic movements. The egg burster is absent on the 2nd instar, 

 having been shed with the old skin, and four, instead of two, caudal 

 bristles are present. Slender lateral and dorsal segmental setae are 

 clearly visible. The 2nd instar grows to about twice the maximum 

 length of the 1st before molting. The 3rd instar also has four long 

 caudal bristles but lateral and dorsal segmental setae are stouter 

 and conspicuously more spatulate than on the 2nd instar. It grows to 

 about twice the maximum length of the 2nd instar before molting. The 

 4th instar is robust and easily distinguishable from the others with 

 the unaided eye. It has four long caudal bristles; stout, spatulate 

 lateral and dorsal segmental setae; and, unlike the other instars, 

 bears a heavily sclerotized, saddle-shaped anal plate. Its maximum 

 dimensions just prior to pupation are about 3.2 mm long and 0.6 mm 

 wide. 



Larvae required a moist diet medium, not saturated and not too 

 dry. When it was too moist, larvae were observed climbing the sides 

 of the vial to escape the moisture; when it was too dry, development 

 was retarded. If the plaster in the bottoms of the rearing vials was 

 saturated with water at the time of oviposition, replenishment of 

 moisture was usually not necessary until the 4th instar. 



